What distinguishes the robust australopithecines from other australopithecines?

What distinguishes the robust australopithecines from other australopithecines?

They are characterized by several features of the skull that give them a “robust” appearance when compared to other, more gracile hominins. The most notable of these features are large, thickly enameled, postcanine teeth that were supported by deep and broad mandibular corpora with tall and broad rami (Fig.

Are Australopithecus africanus gracile or robust?

It is known from a partial skull. Australopithecus afarensis and africanus, and the other species above, are known as gracile australopithecines, because of their relatively lighter build, especially in the skull and teeth. (Gracile means “slender”, and in paleoanthropology is used as an antonym to “robust”.)

What is gracile Australopithecus?

The gracile australopithecines (members of the genus Australopithecus) (Latin australis “of the south”, Greek pithekos “ape”) are a group of extinct hominids that are closely related to humans.

Is Australopithecus and australopithecines the same?

Australopithecus is a member of the subtribe Australopithecina, which also includes Ardipithecus, though the term “australopithecine” is sometimes used to refer only to members of Australopithecus.

What is the difference between robust and gracile australopithecines?

The main difference between gracile and robust is that gracile species had smaller cheek teeth, pronounced prognathism, less flared cheeks, and no sagittal crest, but robust species had enormous cheek teeth, robust jaws and massive jaw muscles, sometimes anchored to a bony crest running along the top of the skull.

What do distinctive traits of robust australopithecines include?

Distinctive traits of the robust australopithecines include: small front teeth and large back teeth. a big face and a sagittal crest.

Would you also classify Australopithecus africanus as gracile or is it a robust australopithecine what features support your argument?

Would you also classify Australopithecus africanus as gracile, or is it a robust australopithecine? What features support your argument? Answers will vary. Some paleoanthropologists consider Australopithecus africanus to be robust despite its gracile cranium, due to its large molars.

What’s the difference between gracile and robust australopithecines?

When referring to gracile australopithecines gracile refers to what?

In the case of australopiths, “gracile” and “robust” refer to the relative size of the jaws, teeth and chewing muscles (all contributing to the “masticatory apparatus”). Traditionally, graciles include the ≥2 million year old Australopithecus afarensis and africanus, and robusts include the later A.

What is another name for Australopithecus?

The general term australopith (or australopithecine) is used informally to refer to members of the genus Australopithecus.

What are the two kinds of australopithecine?

Based on these pronounced differences, australopithecines are classified into two distinct types: gracile and robust.

What is the difference between a robust and a gracile Australopithecus?

In the case of australopiths, “gracile” and “robust” refer to the relative size of the jaws, teeth and chewing muscles (all contributing to the “masticatory apparatus”). Traditionally, graciles include the ≥2 million year old Australopithecus afarensis and africanus, and robusts include the later A.

Why did australopithecins have bigger cheek teeth than graciles?

Robust australopithecines (Paranthropus) had larger cheek teeth than gracile australopiths, possibly because robust australopithecines had more tough, fibrous plant material in their diets, whereas gracile australopiths ate more hard and brittle foods.

What’s the difference between a gracile and a robust?

Gracile and robust are two terms, describing different species of the genus Australopithecus of the tribe hominini. They apparently evolved in eastern Africa around 4.2 million years ago. They are literally extinct and their fossils found in South Africa and East Africa.

What are the names of the robust australopithecines?

In general, Paranthropus is another term for the robust Australopithecines. In this, there are three significant species that represent the robust form. They are A. robustus (2.5 Mya), A. boisei ( 2.5-1.4 Mya), and A. aethiopicus (2.5 Mya).