BIOL 202 Study Guide - Final Guide: Theria, Neopterygii, Homininae

• School: Queen's University
• Department: Biology
• Course: BIOL 202
• Professor: Laurene M Ratcliffe

Document Summary

Agnatha: jawless fish: class: myxini hagfish, class: petromyzontida lampreys. Class: chondrichthyes cartilaginous (jawed) fish: sub-class: elasmobranchii sharks, rays, skates, sub-class: holocephali chimaeras (ghost sharks, ratfish) Two ways to define tetrapoda (four-footed/ four-limbed vertebrates): all sarcopterygii (sarcopterygii) descendants with 4 limbs, all living tetrapod"s plus most recent common ancestor ( crown. Order: anura (clade-salientia) frogs & toads (family bufondiae) Order: crocodylia (or crocodilia) alligators, crocodiles, gavials, caimans. Order: rhynochocephalia (family sphenodontida) lizard-like reptiles, only (genus-tuatara) left. Order: squamata lizards and snakes (geckos, iguanas, chameleons, amphisbaenians) Sub-class: paleognathae flightless birds (ostrich, rhea, cassowary) Sub-class: neognathae all the rest of the birds. Sub-class: yinotheria (prototheria) animals from mesozoic and extant monotremes (egg laying mammals) Sub-class: theria mammas that give birth to living young without using a shelled egg (marsupial: infraclass: eutheria placentals mammals. Superorder: laurasiatheria - placental mammals believed to have originated on the northern supercontinent of laurasia (carnivorans) Order primates: suborder halplorhini. Hominini comprises the genus homo, rise of the humans.