Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Australopithecus

Pliocene Epoch and the Hominins

QuestionAnswer
What does Gracile mean? Small; lightweight; more "graceful" in appearance.
What does Robust mean? Large; heavy-boned; more "stout" in appearance. Refers to large molars and other cranial features.
What does it mean to have a Dished-Face? Forward position of the zygomatic bones give a flat/concave appearance.
Describe post-orbital constriction. Narrowing of the cranium behind the orbits.
Describe prognathism. Occurs when the maxillary region projects out from the face.
What is the sagittal crest and what is its purpose? High ridge of bone that runs along the mid-line of the skull; serves as a muscle attachment site.
What is the Nuchal crest and its purpose. Ridge of bone that runs along the occipital region of the skull; serves as a place of neck muscle attachment.
What are some generalized characteristics of the Australopithecines? Prognathic faces in comparison to modern humans, brains that were ~500 cc, valgus knee.
What are some features that indicate bipedality? Short and Bowl Shaped Pelvis, Medial Angle Femur (Valgus knee), Platform Plateau Tibia, Short foot with hallux positioned toward the midline.
When do we first start seeing bipedal fossils? 4.2 mya Australopithecus anamensis in East Africa (Tibia), 3.7 mya Australopithecus afarensis E. Africa (Pelvis), 3.7 mya bipedal footprints Laetoli, E. Africa.
What is the difference between parallel and parabolic dental shape? parallel looks very straight and parabolic is more U-shaped.
What are some characteristics of Pliocene Hominins? Small brained, small stature, ape-like creature. Also, they were facultative bipeds, meaning they still relied on suspensory locomotion.
name some of the earliest hominins Sahelanthropus tschadensis, Orrorin tugenensis, Ardipithecus ramius kadabba, Ardipithecus ramidus, Australopithecus anamensis.
What species make up the Family Hominidae? Gracile Australopithecus, Kenyanthropus, Robust Australopithecus (Paranthropus)
What specific diagnostic traits does Paranthropus and robust austrolopithecus have? Small incisors & canines, huge premolars, molars. Thick, deep, large mandible. Dietary specialist.
What diagnostic traits does gracile Australopithecus have? Broad, spatulate incisors; canines intermediate. Medium sized molars. Medium sized mandible. Dietary generalist.
Created by: cassidylm34
Popular Anthropology sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards