Tracing Hominid (n) Evolution

Use the following link to visit the Glencoe fossil hominid website.: https://www.glencoe.com/sec/science/cgi-bin/splitwindow.cgi?top=https://www.glencoe.com/sec/science/top2.html&link=https://www.talkorigins.org/faqs/homs/specimen.html : (a) a brief note on the key characteristics of each of the following listed below; and (b) explain what general trends in human evolution each supports. For example, at each “stage” represented by these different fossils, we might see reduction in the teeth, or enlargement of the crania, or more advanced tool use – these are “trends” or patterns we see in the evolution of hominins. For some of these, there are multiple finds in different site locations. Be sure to include and describe at least some of these different finds for each “type” and describe what they offer to our understanding about the particular genus and species under consideration. Early Possible Hominins:s Sahelanthropus tchadensis (8 points) (a) ST type specimen labeled TM 266-01-060-1 characterized within the primate family which includes humans and ancestor fossils of humans. This particular fossil is about 6.5 million years old and had an estimated brain size of 1cup. In comparison today”s modern human brain fits into about 5 2/3 cups. ST had some likeness to apes along with small teeth that show an evolutional stage of hominids. The small teeth would help explain the way specimen diet contained, therefore the specimen was evolving. Ardipithecus ramidus (8 points) Ardipithecus ramidus labeled “ARA-VP, Sites 1, 6 & 7 was found in more than one site and was actually from 17 specimens. The sites contained various bones of arms remains, teeth, head partials. ARA-VP-6/1 consists of 10 teeth from a single individual. Discovered by a team led by Tim White, Berhane Asfaw and Gen Suwa (1994) in 1992 and 1993 at Aramis in Ethiopia. Estimated age is 4.4 million years. The find consisted of fossils from 17 individuals. Most remains are teeth, but there is also a partial lower jaw of a child, a partial cranium base, and partial arm bone from 2 individuals. ARA-VP-6/1 consists of 10 teeth from a single individual. ARA-VP-7/2 consists of parts of all three bones from the left arm of a single individual, with a mixture of hominid and ape features. Australopithecines. Select at least two species within the Australopithecus genus. Genus Homo ( Bonus Question: What are some shared traits that help us classify all of these all members of genus Homo? What makes them distinct from Australopithecines? 5 points) Homo habilis Homo erectus Homo ergaster Homo antecessor OR heidelbergensis Homo neanderthalensis Homo sapiens