Lab Exercise 11

.docx

School

Cerritos College *

*We aren’t endorsed by this school

Course

ANTH115

Subject

Anthropology

Date

Dec 6, 2023

Type

docx

Pages

Uploaded by HighnessHorseMaster856

Fossil Primates In order to investigate the past, we have to learn about the fossils that come from those prior times. From the following pictures decide what inferences you can make about the species. 1) What can you say about its evolutionary relationship? In other words what type of creature is it? Be as detailed as possible and classify it to as low a level as possible. How can you tell? What physical features give you an evidence of the species. Remember the comparative osteology slides, they will help. This species has a large brain size, a skull structure, orbits and a short snout. This species is most likely a primate from the adapoids family. 2) What about the teeth? What type of functional dentition does the species have? What else can it tell you about the species? The teeth seem sharp and pointy therefore they are most likely of the insectivore dentition. 3) Do you believe this is an adult or child? This is most likely a young adult.

4) Pretend you found two of these species, however one was much larger than the other. How would you explain this? The larger would most likely belong to and older animal. 5) By looking at the post cranial bones (those other than the skull and mandible) what can you determine about the locomotion of the species? The locomotion of this species is arboreal and more mobile. The head is round. Pleasiadapiform Watch the video on the Plesiadapiform. Once you have watched the video compare a Pleasidapiform with a Strepsirrhine. Make sure to compare and contrast the following: 1) Do they have a post orbital bar? 2) What is the position of the orbits (eyes)? 3) Is there a toothcomb present? 4) What is the size of the braincase? Pleasidapiform

Strepsirrhine. After comparing and contrasting Pleasidapiform and Strepsirrhine answer the following questions: 1) Why do you think some Anthropologists consider a pleasidapiform to be classified as a primate? This is perhaps, beciase pleasiadapiforms include long narrow snouts, large canines, claws and a small brain. 2) What features of a Pleasidapiform are not primate features? Origins of Apes Sivapithecus was believed at one time to be the early ancestor of an Orangutan. Comparing the skulls of Sivapithecus with other apes can help to determine if the hypothesis is accurate. Using the following images, compare and contrast Sivapithecus, Orangutan and Gorilla.

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version