Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

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.
We do not share your email address with others. It is only used to allow you to reset your password. For details read 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.

Remove Ads
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards

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

Vertebrate Zoology


Skeleton of Osteichthyes Fully ossified; Dermal plates in crnium; Teeth rooted in dermal bone
Soft Tissue of Osteichtyes Gas bladder; Operculum over gills
Actinopterygians Ray finned; Only radials; Heavy to light weight scales; Robust to flexible jaw for whole prey feeding;
Actinopterygians Fins Caudal fins are either heteroarcal or homocercal; Paired fins with pelvic fins moving anteriorly
Actinopterygians Locomotions Lateral ungulation in the form of anguilliform, carangiform and subcarangiform, astraciform; Dependent on frictional drag and inertial drag
Actinopterygians Reproduction Freshwater with high parental input in nests and large yolks; Marine with low parental input and small yolks for plankton feeding young; Aplacental viviparity
Actinopterygians Diversity: Polypterids Derived from basal node, so retain basal and radial elements
Actinopterygians Diversity: Acipenseriforms Sturgeon - Secondary loss of endochondral bone, reduced dermal bone, gas bladder for respiration, heterocercal tail; Paddlefish- Ram feeding, somewhat hetereocercal tail
Actinopterygians Diversity: Neopterygians Garpikes - no basals, lack complex mobile elements in jaw so no suction feeding; Bowfins - mobile maxilla for suction, pelvic fin shift
Actinopterygians Diversity: Teleost Premaxilla and maxilla mobile, pharyngeal jaws mobile, shift pelvic fins, very diverse
Sarcopterygians Extended endoskeletal elements in fins; Retains two dorsal fins; Devonian periods; Coelacanths, Lungfish, and Tetrapods
Sarcopterygian Diversity: Coelacanth Fossils back 400 million years ago to present day; Fatty filled swim bladder homologous to fish gas bladders; Fleshy paired fins not for support but for windmill locomotion like tetrapod locomotion; Advanced Neurological pathways
Sacopterygian Diversity: Lungfish Australian species is less derived with large heavy scales and aquatic fins; South American and African species have wispy fins for substrate locomotion and lungs for breathing, ephemeral environments, burrowing and estivating
Created by: LionsandGiants