A valid criticism of the idea that anthropoids evolved independently in Africa and South America is that, there are striking similarities between Old World and New World primates, not only in phenotype but also in genotype. Aegyptopithecus. _______ relies on identifying changes in the orientation of the earth's geomagnetic poles. By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. The New World monkeys are the platyrrhines (“flat-nosed”), a group comprising five families. Which fossil group is characterized by an eye orbit fully enclosed by bone? Which genus is considered the ancestor to adapids and omomyids? The best-accepted hypothesis for the dispersal of African monkeys to the New World is that: Gigantopithecus stood _______ feet tall and weighed _______ pounds. Description. Lemurs, for example, lack the functional duality of the hands of most apes and Old World monkeys (catarrhines). The most likely contender for the common ancestor to all later catarrhines is: July 30, 2017 Anthropology. Included here are Victoriapithecidae, an Early Miocene family belonging to the Cercopithecoidea; Proconsulidae, an Early Miocene family belonging to the Hominoidea; and families Pliopithecidae (Early and…, The hands of catarrhines show a greater range of precise manipulative activity than those of other primates. Sivapithecus is widely recognized as an ancestral member of which ape lineage? …together they are classified as catarrhines (meaning “downward-nosed” in Latin). The most likely contender for the common ancestor to all later catarrhines is: a. Oligopithecus b. Aegyptopithecus c. Parapithecus d. Apidium e. … As their taxonomic names suggest, New World (platyrrhine) and Old World (catarrhine) monkeys are distinguished by the form of the nose. Which Eocene organisms had clear primate characteristics like a postorbital bar, opposable thumbs, nails, and a large brain? The best-accepted hypothesis for the dispersal of African monkeys to the New World is that: platyrrhines evolved from anthropoids in Africa that migrated across the Atlantic to South America. The angiosperm radiation hypothesis proposes that: certain primate traits were responses to the acquisition of fruit during the Cenozoic. The most likely contender for the common ancestor of all later catarrhines is: Primate fossils have been recovered from all of the following continents except: Eocene primates differ from Paleocene primates in the following way(s), All of the choices are correct: Increased vision, reduced sense of smell, and larger brain. the opossum is also an arboreal mammal but did not develop uniquely primate traits. Announcing our NEW encyclopedia for Kids! Eocene primates that are the earliest anthropoids. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. Monkeys underwent massive _______ in the Pliocene and Pleistocene. (Some lower primates possess nominally opposable thumbs but lack the precision grip of catarrhines.). The common ancestor of all later catarrhines, Old World monkeys, and hominins was likely. grasping hands and feet were necessary for living in trees. …include the emergence of the catarrhines (Old World monkeys, apes, and humans) in Africa and the platyrrhines (New World monkeys) in South America. Which fossil group is characterized by an eye orbit fully enclosed by bone? Euprimates, the first true primates, consisted of the following two groups: The visual predation hypothesis proposes that: primate traits arose as adaptations to preying on insects and small animals. The most likely contender for the common ancestor to all later catarrhines is: _______ relies on identifying changes in the orientation of the earth's geomagnetic poles. What is meant by the cultivation continuum? anthropoids. The most distinctive feature of ape dentition, which clearly distinguishes apes from Old World monkeys, is: The space between the canine and the first premolar in the lower jaw of some primates is a(n): A valid criticism of the arboreal hypothesis of primate origins is that. https://www.britannica.com/animal/catarrhine, monkey: Old World monkeys versus New World monkeys. The technical distinction between the New World platyrrhines and Old World catarrhines is the shape of their noses. New World monkeys have broad noses…, Catarrhini (Old World monkeys and apes) The catarrhines are the only group to possess truly opposable thumbs. The New World monkeys are the platyrrhines (“flat-nosed”), a group comprising five families. Duality in hand function has been described in terms of precision and power….
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