Sahelanthropus tchadensis is one of the oldest known species in the human family tree. This species lived sometime between 7 and 6 million years ago in West-Central Africa (Chad). Walking upright may have helped this species survive in diverse habitats, including forests and grasslands. Although we have only cranial material from Sahelanthropus ...VDOM DHTML tml>. How are a sagittal keel and a sagittal crest different? -no sagittal keel. Homo Heidelbergensis-500k-250k ya-found in Africa, Europe, Asia and England-1200 cc-early archaic H. sapiens - distinct right and left brow ridgesHomo habilis, extinct species of human, the most ancient member of the human genus. It inhabited parts of sub-Saharan Africa from roughly 2.4 to 1.5 million …Group of answer choices a retromolar gap a 2/1/2/3 dental formula a projecting chin a sagittal keel Flag this Question Question 5 1 pts What does the Multiregional Continuity model suggest? Group of answer choices Archaic Homo sapiens migrated out of Africa and replaced Neandertals in Europe.sagittal keel, nucha; torus at the back of the skull, long, low, cranial shape, large heavy browridges, thick cranial vault bones, increase in cranial capacity from earlier hominids. H. erectus, was the first hominid species to...Sagittal craniosynostosis is the most common type of craniosynostosis, a birth defect that affects the flexible joints in your baby’s skull called sutures. Craniosynostosis causes one or several sutures to fuse prematurely, leading to a misshapen skull and head. Sagittal craniosynostosis occurs when the sagittal suture that runs …The cranial bones are thicker than those of modern humans, and some Homo erectus skulls have a slight thickening along the sagittal suture called a sagittal keel. Large, shelf-like brow ridges hang over the eyes. The face shows less prognathism, and the back teeth are smaller than those of Homo habilis.Examine the following photo. Label the supraorbital torus and the sagittal keel. Which hominin group does this represent? The supraorbital torus and the sagittal keel represent the homo erectus hominin group. 9. Examine the following photo. Does this cranium belong to H. habilis or H. erectus? Name two features that helped you decide.For this section, you will be comparing specimens from three later hominin species: H. heidelbergensis, H. neandertalensis, and H. sapiens (modern humans). As you can't hold or measure the specimens, you will need to estimate based on your readings and photographs from the powerpoint. Thus you will use adjectives (ie longer, shorter, larger, smaller, etc.) and not numbers to describe features.males had a bony ridge (a sagittal crest) on top of their skull for the attachment of enormous jaw muscles. In this species, the crest was very short and located toward the rear of the skull. a small hyoid bone (which helps anchor the tongue and voice box) found in a juvenile specimen suggests A. afarensis had a chimp-like voice boxSkeletal System Functions. - makes up body framework (gives body shape) - supports the body. - protects the vital organs. - provides for movement. - stores mineral reserves. - produces red blood cells. Bone Composition: organic materials. 32%: collagen and bone cells.This pdf guide provides detailed information on the Stablecut Saw Blades, a range of high-performance cutting instruments for large bone surgery. The guide covers the features, benefits, specifications, and ordering information of the Stablecut Saw Blades, as well as the compatible power systems and accessories.The frontal crest of the frontal bone ends below in a small notch which is converted into a foramen, the foramen cecum (or foramen caecum), by articulation with the ethmoid.. The foramen cecum varies in size in different subjects, and is frequently impervious; when open, it transmits the emissary vein from the nose to the superior sagittal sinus.This has …The sagittal keel is a thickening of the skull that occurs on the frontal bone and/or the parietal bone. This thickening of bone most often occurs... See full answer below. Study with Quizlet and memorize flashcards containing terms like "Acheulian Complex" definition, "Sagittal keel" definition, Homo habilis timeline and more. ... Slight ridge of bone found along midline sagittal suture of the cranium found in some H erectus skulls. Homo habilis timeline. 2.5-1.8 mya.Question: Question 5 Another name for an occipital torus is: sagittal torus supraorbital torus nuchal torus postorbital torus No new data to sa Question 7 The classic H. erectus traits included all of the following EXCEPT: a sagittal keel an occipital torus a discontinuous supraorbital torus a long cranium .This condition is different from Homo sapiens, where sagittal keel, with the upper parts of the lateral cranial vault there is a greater contribution of the parietal arc, and also from surfaces (parieto-temporal bones) converging superiorly; the vault earlier African H. habilis and H. rudolfensis specimens, where surfaces of the parietals are ...Sagittal keel. H. erectus crania often have flattened areas on either side of the midline, forming an angle along the top of the skull. This can be on the frontal bone, on the parietals, or both. Biology. Biology questions and answers. Features associated with a tough diet of robust Australopithecines (Paranthropus) include O A. a sagittal keel B. shovel shaped incisors C. a small temporal fossa D. large zygmatic (cheek) bone.Biology questions and answers. Using the images below 1A. Homo floresiensis. B. Homo heidelbergensis, C. Homo Neanderthalensis, D. Modern Human and your lab manual, compare the differences between the hominin species 1. Describe whether or not each species has a sagittal crest, sapittal keel, or nothing 2. Indicate where each hominin species ...dental arcade shape. -Hominins are the tribe of primates that includes humans and our ancestors since diverging from the last common ancestor with the chimpanzees. - (a)Chimpanzees and other great apes have large incisors and projecting canines, a diastema, and U-shaped dental arcades caused by parallel rows of cheek teeth. (b)Early hominins ...sagittal keel. a slight ridge of bone found along the midline sagittal suture of the cranium, which is typically found on H. erectus skulls. acheulian Complex. The culture associated with H. erectus, including handaxes and other types of stone tools; more refined than the earlier Oldowan tools.A wider pelvis would make the birthing process easier, yet a narrow pelvis is more efficient for bipedal locomotion. The result is rotational birth, which likely evolved relatively late in human evolution. Today, human birth is a complex process that often requires assistance. Study Anth 102: Chapter 11.You note there is a sagittal keel at the top of the skull. Based on this information alone, to which species does the skull belong? Homo erectus . Homo erectus. The original name for Asian Homo erectus was Pithecanthropus. Pithecanthropus . End of preview. Want to read all 11 pages? Upload your study docs or become a member.Each functional system of the body evolves independent of the others, but each system has an effect on the others. Example of mosaic evolution. Neurological, dental and locomotor evolved at different rates. Sagittal crest. Starts on frontal bone, goes back to occipital; muscle attachment area, huge because it drives a huge mandible. Sagittal keel.4/20/2020 Test 3: ANTH185-92901 (ONL) Physical Anthropology 1 / 1 pts Question 41 According to the Complete Replacement Model, the transition from premodern to modern Homo sapiens: only occurred once, in Africa. occurred in several regions of the Old World simultaneously. began about 100,000 years ago in Asia. occurred first in Europe. began about 10,000 years ago in Indonesia.Oct 9, 2006 · A blunt sagittal keel is also present. This becomes more prominent posteriorly, where the bone is raised on both sides of the suture but seems to subside centrally. Here the pattern of (double) keeling resembles that in D2280. The chord from bregma to lambda is 98 mm, while the arc is 105 mm. Verified questions. economics. Classify the following markets as perfectly competitive, monopolistic, or monopolistically competitive, and explain your answers. wooden no. 2 pencils. Verified answer. accounting. a. Barga Company purchases $20,000 of equipment on January 1, 2017. The equipment is expected to last five years and be worth$2,000 at ...The Hominin lineage - 1.8 mya to present • H. erectus--> H. heidelbergensis = 800 kya • Speciation & divergence in Africa • H. erectus survived in Asia • H. erectus extinct in Africa • H. heidelbergensis the 2nd species to leave Africa • Southern Europe 800 kya, northern Europe 500 kya • India & China by 600 kya • H. heidelbergenesis gave rise to:Homo sapiens Homo neanderthalensis I have a long, low cranium with a sagittal keel. I have a modernHomo fioresiensis stature. I am an obligate biped living in Asia around 1.0 mya. I make Acheulean stone tools. I have a low cranium and small teeth. I have a very small cranial capacity and a very small stature. l live on an island in Southeast ...Humans don't have it but some individuals have a 'sagittal keel' (e.g. Patrick Stewart the actor). It looks like a vestigial version of the sagittal crest. The cat's skull is highly domed. The zygomatic arches (cheek bones) are wide. ... Below are a couple of photos showing the sagittal crest in (1) an unspecified domestic cat and (2) a ...Compared with juvenile and adult H. erectus and Homo sapiens Sangiran-3 has three fully developed layers of vault bone with localized hypertrophy of the outer table into a sagittal keel, bregmatic eminence, and occipital torus. Sangiran-3's absolute vault thickness is also within the range of adult H. erectus.The sagittal suture closes at a variable time, typically after 2 years of age. The remaining sutures have a somewhat variable pattern, but if the head is of normal circumference and shape, the maturation pattern of the sutures is likely to be normal. 15.3 Craniosynostosis. ... with a frontal keel due to craniosynostosis of the metopic suture ...Frontal bone. Inner surface. (The squamous part is the upper two thirds.) The squamous part of the frontal bone is the superior (approximately two thirds) portion when viewed in standard anatomical orientation. There are two surfaces of the squamous part of the frontal bone: the external surface, and the internal surface.Feature H. habilis H. erectus Sagittal crest, sagittal keel, or none. No Sagittal crest Sagittal keel Brow ridge (big, med, small) SLIGHTLY DEVELOPED Big brow ridge Big brain (based on reading) (big, med, small) Smaller 640 cc LARGER 900-1000CC Stone tool technology (Oldowan, Achuelean, Mousterian, Upper/lower Paleolithic) Oldowan stone Acheulean.Jul 7, 2022 · Sahelanthropus tchadensis is one of the oldest known species in the human family tree. This species lived sometime between 7 and 6 million years ago in West-Central Africa (Chad). Walking upright may have helped this species survive in diverse habitats, including forests and grasslands. Although we have only cranial material from Sahelanthropus ... Advertisement. unlike most modern apes, this species did not have a deep groove lying behind its brow ridge and the spinal cord emerged from the central part of the skull base rather than from the back. males had a bony ridge (a sagittal crest) on top of their skull for the attachment of enormous jaw muscles.males had a bony ridge (a sagittal crest) on top of their skull for the attachment of enormous jaw muscles. In this species, the crest was very short and located toward the rear of the skull. a small hyoid bone (which helps anchor the tongue and voice box) found in a juvenile specimen suggests A. afarensis had a chimp-like voice boxsagittal keel. postorbital constriction. 2) I find a fossil pelvis, how do I know if it belonged to a biped? the pelvic bones are larger than those found in quadrupeds. the pelvic girdle is short and wide. the pelvic girdle is long and narrow. you cannot determine locomotion by examining the pelvic bones.Jul 7, 2022 · Paranthropus robustus is an example of a robust australopithecine; they had very large megadont cheek teeth with thick enamel and focused their chewing in the back of the jaw. Large zygomatic arches (cheek bones) allowed the passage of large chewing muscles to the jaw and gave P. robustus individuals their characteristically wide, dish-shaped face. Homo erectus populations began to differentiate, Retain many H. erectus characters.-Sagittal keel -Long, low braincase -Derived characteristics appear.-Increased brain size-More rounded brain case (neurocranium)-Dental reduction -Less angled occipital (bigger brain, more rounded cranium= less steep angle)Nearly all the men in my family are bald, and none of them have this . I recently decided to shave my head to join them, and I noticed I have a slight ridge starting at the middle of my head to the start of the back of my head. I looked it up and determined that it is most likely a sagittal keel. I was wondering what the purpose of this is, as ... Question: Weror me Tonowing is a diagnostic Traitor Homo erectus O A Hyper-robust molars. OB. A sagittal keel. OC. A chin. OD. An occipital bun. O E Opposable toes QUESTION 5 The first fossil hominid found outside of Africa was A Australopithecus boisel O Homo sapiens neanderthalensis C. Homo sapiens sapiens OD Homo erectus O E Australopithecus africanus QUESTIONSAbout two million years ago, a new set of fossils began to appear in the human fossil record. Designated as Homo erectus, they show evidence of increases in both body size and brain size. Homo ...Thick cranial bone, large brow ridges and a projecting nuchal torus, maximum cranial breadth below the ear opening and sagittal keel Sagital keel Small ridge that runs front to back along the sagittal sutureA. AfarensisH. Habilis H .erectus Modern Human Size of brain case435 grams640grams1029 grams1350 grams Cranial shape- Is the skull longer front to backyes yes No the skull is smallNo the skull is small Sagittal CrestHave a sagittal crest for strong jaw muscle Have a sagittal crest for strong jaw muscleHave sagittal crest for strong jaw musclesHave no sagittal crest Sagittal keel They do not ...posterior projection from keel gives a smooth transition from heel-strike. sagittal split allows for inversion and eversion. non-articulating. have short or long keels. shorter keels are not as responsive and are indicated for moderate-activity patients.Keel Blade Keel Blade Keel Blade 51KEELCMUR1 - - - Product Usable Length x Width (mm x mm) Cutting Thickness (mm) Blade Design FOR USE WITH Zimmer ®Stryker Linvatec® Hall®1 Synthes ® Aesculap 90 x 12 0.89/1.19 Single Sided 12090119UR1 12090119SR1 12090119LR1 - 70 x 10 1.0/1.19 Single Sided 10070119UR1 10070119SR1 10070119LR1 10070119NR1 70 x 10 0.64/1.00Homo habilis, extinct species of human, the most ancient member of the human genus. It inhabited parts of sub-Saharan Africa from roughly 2.4 to 1.5 million years ago. Many of its features appear to be intermediate between the relatively primitive Australopithecus and the more-advanced Homo species.Sagittal keel. Sagittal keels occur in several early human species, most noticeably in Homo erectus , occasionally in Homo heidelbergensis and in some Upper Paleolithic Homo Sapiens specimens. Most modern Homo sapiens groups have lost them, likely as part of the general trend toward thinning of the cranial bones to make room for larger brains… . -sagittal keel-massive supraorbital torus-flat receding forehead-low cranial vault-brain size 1100 cc-very short small face-globular brain case. Petralona. H. heidelbergensis found in Mauer, Germany.-flat and receding forehead-large brain-massive brow ridge-incipient midface prognathism.Bahauddin Zakarai University, Sahiwal. BUSINESS 423. Exercise 7. Label key features of the skull of Homo erectus. Label andBriefly Describe the key features of the skull and how it differs from earlier hominins using the following terms: mandible maxilla nasal area brow ridges foramen magnum zygomatic arch occipital torus sagittal keel chin ...Figure 5.11 Homo erectus (left) has a sagittal keel (ridge on top of head), a shorter forehead, and a different-shaped skull than Homo ergaster, seen on the right. (credit: (left) kevinzim/Wikimedia Commons, CC BY 2.0; (right) Reptonix free Creative Commons licensed photos/Wikimedia Commons, CC BY 3.0) Homo Erectus- time and location. Africa and Asia, 1.8 mya. E. Dubois. found first H. Erectus in Java 1891. H. erectus- brain. 750-1250cc, more encephalized that H. Habilis, base of cranium is widest. H. erectus- body. almost our height, large brow ridges, shelf like brow ridges, low forehead. H. erectus- sagittal keel.-No sagittal keel-long, low skull shape absent-tent-shaped cranium absent-pronounced browridges present-Sharply angles occipital bone absent. Asian H. erectus-sagittal keel, long low skull shape, tent-shaped cranium, pronounced brow ridges and sharply angled occipital bone all present.sagittal keel. A thickening of bone on part or all of the midline of the frontal bone, or parietal bones where they meet along the sagittal suture, or on both bones. sagittal crest. A ridge of bone that runs down the middle of the cranium like a short Mohawk. This serves as the attachment for the large temporal muscles, indicating strong chewing.A sagittal keel: a. is characteristic of Homo habilis b. is characteristic of Homo erectus c. is characteristic of Homo sapiens d. is found only in australopithecines. ANS: B. . . DIF: Easy REF: Page 340 TOP: Homo erectus in Asia (4.b) NOT: Factual 34. According to the text, the first hominid to migrate out of Africa was: a.Crania: Thick cranium bone Large brow ridges Little forehead development Cranium wider at base Sagittal keel. East Lake Turkana 1.7 mya. 848 cm cubed cranial capacity No longer the "oldest" H. erectus specimen found but the oldest from Africa. Nariokotome WT 15000 ca. 1.6 mya.Sagittal crests (i.e. ectocranial crests that occur at, or close to, the midline), if they appear at all in living hominoids, are more likely to occur in male than female individuals and they develop relatively late in ontogeny (i.e. their development tends to coincide with, or follow, the eruption of the permanent dentition).sagittal keel low sloping forehead receding chin large body size longer femur. Homo ergaster. Some people think to seperate them from h. erectus (compared to homo erectus): thinner cranial bones smaller brow ridges no sagittal keel. Homo habilis "handy man, tool maker" found in tanzania old as 2.4-1.5 myaSagittal keel. A bony ridge formed by a thickening of bone lengthwise along the midline of the top of the skull, found in homo erecctus. Foramen magnum. the large opening at the base of the cranium, opening for lower brain to spinal cord connection through which the spinal cord passes.A weight and height conversion chart consists of different measuring units like pounds (lb), ounces (oz), kilograms (kg), and grams (g) used to measure the weight, and feet (ft), inches (in), meters (m), and centimeters (cm) which are generally used to measure the height of an individual. Feet and inches are units in the imperial system ...Sahelanthropus tchadensis is one of the oldest known species in the human family tree. This species lived sometime between 7 and 6 million years ago in West-Central Africa (Chad). Walking upright may have helped this species survive in diverse habitats, including forests and grasslands. Although we have only cranial material from Sahelanthropus ...Sagittal cresting or keeling: A sagittal crest is a prominent ridge of bone along the top of the skull (almost like a mohawk of bone!). A sagittal keel is a less prominent ridge—there is clearly a raised mound of bone atop the head, but it doesn't quite look like that mohawk of bone."... keel located adjacent to the mandibular symphysis (114.1); (5) a ... sagittal crest that rises above the cranial roof, and elongate anterior to middle ...Surfaces. The inferior surface of each orbital plate is smooth and concave, and presents, laterally, under cover of the zygomatic process, a shallow depression, the lacrimal fossa, for the lacrimal gland; near the nasal part is a depression, the fovea trochlearis, or occasionally a small trochlear spine, for the attachment of the cartilaginous pulley of the obliquus oculi …In the parietals, there is no keel on the sagittal suture of Salkhit, in contrast to the Locality 1 specimens. In both Salkhit and UC 101, there is a raised ridge that runs parallel to the sagittal suture, and the ridges follow the suture, diverging as they swerve posterior and inferior. This feature is also seen in Locality 1 Skull XII.Hominins found outside of Africa are members of genus Homo. The later, more widely dispersed hominins. 1) larger. 2) more committed to a terrestrial habitat. 3) used elaborate stone tools. Variation among the different geographical groups of these hominins. Anthropologists still debate how to classify them (split or lump)-sagittal keel -wide cranial base -receding brain case (small brain size) *others possess traits different from typical Homo erectus (primative, look like H. habilis)-prognathism -thin browridge -large canine -small cranial capacity. Dmanisi Homo erectus are.The face had chimplike features, with a big sagittal crest," she adds, referring to a ridge of bone along the top of the skull that is more pronounced in animals with powerful jaw muscles, which attach to the crest. There's just one problem: The skull, called MRD, is 3.8 million years old.Do humans have a sagittal keel? Sagittal keels occur in several early human species, most noticeably in Homo erectus, occasionally in Homo heidelbergensis and in some Upper Paleolithic Homo sapiens specimens. … However, there is a small portion of modern humans who have the feature, but its function and etiology are unknown.sagittal keel. A slight ridge of bone found along the midline sagittal suture of the cranium, which is typically found on H. erectus skulls. Nariokotome. Kenya nearly complete skeleton of a boy between the ages of 11 and 13 classified as Homo erectus. Atapuerca Cave (Spain)The skull shape and features are very much like other members of the genus Homo, including features such as a sagittal keel and large brow like Homo erectus and a well-developed frontal lobe, similar to modern humans.Kabwe shows features similar to H. erectus such as a low braincase profile (the area towards the back of the skull), large brow ridges, a slight widening of the midface known as the sagittal keel, and a protrusion at the back of the skull named the occipital torus. But Kabwe also resembles modern humans with a flatter, less prognathic face, and ...Paranthropus robustus is an example of a robust australopithecine; they had very large megadont cheek teeth with thick enamel and focused their chewing in the back of the jaw. Large zygomatic arches (cheek bones) allowed the passage of large chewing muscles to the jaw and gave P. robustus individuals their characteristically wide, dish-shaped face.Jul 11, 2022 · Sagittal crest: A sagittal crest is the bony ridge on the top of the skull where the jaw muscles of some early humans were anchored allowing powerful chewing (a modern human’s jaw muscles are anchored beside their ears). This ridge runs lengthwise down the middle of the top of the skull. Sagittal imbalance is a front-to-back imbalance in the spine. Normally, the spine has two gentle front-to-back curves. The lumbar (lower) spine has an inward curve called lordosis. The thoracic (middle) spine has an outward curve called kyphosis. Usually, these curves work in harmony to keep the body’s center of gravity aligned over the hips ...Nov 17, 2020 · While many of the physical characteristics of H. erectus are similar to H. ergaster, the Asian species is unique in a number of ways. Asian forms exhibit a thickening along the sagittal suture, termed a sagittal keel. The keel gives the skull a pentagonal shape in cross-section. It is unknown whether the keel served a function. -Lack a sagittal keel-Have a less robust supraorbital torus and thinner cranial bones-Grooved, shovel shaped incisors Homo ergaster -Found on the eastern Indonesian island of Flores and dating between 95,000 and 12,000 years ago-Approximately 1 m tall with a brain around 380 ccLabel the supraorbital torus and the sagittal keel. Which hominid group does this represent? This is a Homo erectus cranium. This is a Homo erectus cranium . 9. Examine the following photo. Does this cranium belong to Homo habilis or Homo erectus Name two features that helped you decide. ?Question: Question 5 Another name for an occipital torus is: sagittal torus supraorbital torus nuchal torus postorbital torus No new data to sa Question 7 The classic H. erectus traits included all of the following EXCEPT: a sagittal keel an occipital torus a discontinuous supraorbital torus a long cranium .Head Skull of H. e. pekinensis showing a flat face, pronounced brow ridge, and a sagittal keel Homo erectus featured a flat face compared to earlier hominins; pronounced brow ridge; and a low, flat skull. The presence of sagittal, frontal, and coronal keels, which are small crests that run along these suture lines, has been proposed to be ...Apr 30, 2023 · Nuchal torus, sagittal keel, thick cranial bone. Projecting occipital bone, often called occipital bun in Neanderthals; intermediate thickness of cranial bone. Small bump on rear of skull, if anything; thin cranial bone. Dentition. Large teeth, especially front teeth. Slightly smaller teeth; front teeth still large; retromolar gap in ... The skull of a male gorilla. The crest can be seen at the top of the skull. Katherine Balolia. He said if the sagittal crest relates to sexual selection in hominins too, then you may well see a ...The presence of a sagittal keel. B. An increase in brain size. C. The ability to use tools. D. The use of fire. Expert Answer. Who are the experts? Experts are tested by Chegg as specialists in their subject area. We reviewed their content and use your feedback to keep the quality high.Joined in midline by the sagittal suture (sagittal keel/crest in some extinct hominids). Meets temporal bone at the squamosal suture. Interior aspect has prominent meningeal grooves traveling from inferior to superior and anterior to posterior. Sides by locating right angle made by coronal and sagittal sutures, w squamosal sutures lateral.Sagittal keel, a feature of the skull; Plant anatomy. Keel (petal), the two bottom petals, below the wings, in flowers of the subfamily Faboideae of the flowering plant family Fabaceae; sometimes joined to form a structure whose shape resembles the keel of a boat; See also. Keel (disambiguation) Carina (disambiguation)sagittal keel. large teeth. sagittal keel. H. erectus’s change in limb proportions, to a body with short arms and long legs, indicates . retention of climbing and ...Sagittal keel, a feature of the skull Plant anatomy Keel (petal), the two bottom petals, below the wings, in flowers of the subfamily Faboideae of the flowering plant family Fabaceae; …Homo Erectus Date Range. 1.95 mya- 50kya. Homo erectus cranium. Had supraorbital tartus/suclus, nuchal torus, reduced post orbital construction, low forehead, low and low brain case, angle occipital, frontal/sagittal keel, no chin, and brain was 700-1250cc. (Shaped like a lemon) Homo erectus dentition. Small molars, and small teeth in general.Sagittal keel, a feature of the skull; Plant anatomy. Keel (petal), the two bottom petals, below the wings, in flowers of the subfamily Faboideae of the flowering plant family Fabaceae; sometimes joined to form a structure whose shape resembles the keel of a boat; See also. Keel (disambiguation) Carina (disambiguation) Figure 5.11 Homo erectus (left) has a sagittal keel (ridge on top of head), a shorter forehead, and a different-shaped skull than Homo ergaster, seen on the right. (credit: (left) kevinzim/Wikimedia Commons, CC BY 2.0; (right) Reptonix free Creative Commons licensed photos/Wikimedia Commons, CC BY 3.0) Sagittal crest. A ridge running along the top of the cranium, usually representing increased bone area for the attachment of chewing muscles. ... Sagittal keel. A raised area in the mid-cranium. Molecular and morphological knowledge of living humans and apes supports the idea that humans are more closely related to chimpanzees and gorillas than ...Kabwe shows features similar to H. erectus such as a low braincase profile (the area towards the back of the skull), large brow ridges, a slight widening of the midface known as the sagittal keel, and a protrusion at the back of the skull named the occipital torus. But Kabwe also resembles modern humans with a flatter, less prognathic face, and ...True or False: Homo erectus does not have a Sagittal Keel (not sagittal crest)? False, it does have a sagittal keel Do the Australopithecus and Paranthropus have a modern stature?Genus Homo- Brain Size, Tool Use, Movement, and Subsistence. Term. 1 / 17. Sagittal Keel. Click the card to flip 👆. Definition. 1 / 17. an angle formed between the left and right parietal bones in the sagittal plane (looks similar to the keel of a boat) Click the card to flip 👆.Biology. Biology questions and answers. Features associated with a tough diet of robust Australopithecines (Paranthropus) include O A. a sagittal keel B. shovel shaped incisors C. a small temporal fossa D. large zygmatic (cheek) bone.Expert Answer. Sagittal crest The sagittal crest that runs from the top of the skull acts as an anchor for large chewing muscle The presence of this ridge of b …. Australopithecus robustus had adapted which feature below for eating a tough diet? small temporal fossa sagittal crest nuchal torus sagittal keel.False D Question 6 Which of the following is NOT TRUE about the differences between Homo erectus and Homo sapiens, in terms of cranial features? one species has more pronounced brow ridges, the other has a smoother forehead O one species has a sagittal keel, the other does not O ape-like dentition is found in one species one species had a little more post-orbital constriction than the otherAustralopithecus africanus was the first fossil hominin discovered in Africa. In 1924, Raymond Dart (see his biographical sketch this chapter) identified the face, mandible, and endocast as being that of a juvenile …Skip to main content ... ...