Archosauria (crocodiles, dinosaurs, pterosaurs, birds) Late Triassic ... Dinosaurs first appear as do mammals, turtles, and pterosaurs. Shallow warm seas ...
Mass extinction the act of extinguishing something done in a relatively large scale ... First appearances by dinosaurs, mammals, pterosaurs, frogs, and turtles. ...
... into the Archosauromorpha (Crocs, birds, pterosaurs, and ... differently than crocs. move nares to top of skull. Saurischia. Palaeopoda (4-legged gait) ...
1. Diagnostic features - present sometime during the development ... Pterosaurs. Crocodilians. Dinosaurs. Modern Reptiles. Mammals. Stem Reptile. Birds. Birds ...
Mesozoic : (Permian Cretaceous) huge in biodiversity. End Cretaceous ... All non-avian dinosaurs & pterosaurs gone. No terrestrial organisms 25 kg survive! ...
Early Triassic(251 mya)-Single Continent made up of Pangaea, ... In Late Triassic Epoch dinosaurs, pterosaurs and proto-crocs dominated. Archosaurs were common ...
Periods of time are usually bordered by major geological or paleontological ... types of dinosaurs (such as Tyrannosaurs), primitive birds replace pterosaurs. ...
Nervous system develops from dorsal nerve cord. Embryos have pharynx with slits ... Marine plesiosaurs & ichthyosaurs. Dinosaurs and pterosaurs. Living Reptiles ...
EMBRYOLOGICAL FEATURES: amnion, chorion, ... Costal breathing (inhaling using movement of the ribs) ... Some pterodactyloids had wildly developed skulls. ...
Extinct Animals Dodo Extinct since mid to late 17th century Lived on one tiny island Passenger Pigeon Once most common bird in North America Flocks with more than a ...
Extinct Animals Dodo Extinct since mid to late 17th century Lived on one tiny island Passenger Pigeon Once most common bird in North America Flocks with more than a ...
Triassic - North America and Gondwanaland rift apart; ... Africa and Antarctica/Australia rift apart. End of Jurassic - Eurasia rotates, closing off Tethys, ...
Cretaceous turtle Archelon Mosasaurs Giant marine lizards (the Komodo Dragon is closest living relative to these) Mosasaurs Evolved from land lizard, ...
Title: Linking Asteroids and Meteorites through Reflectance Spectroscopy Author: Smithsonian Institution Last modified by: Tom Created Date: 5/23/2001 8:09:58 PM
Crocs ( and dinos?) muscles pulling liver backward and 'rocking' pelvic bones ... How could phylogeny explain the difference between turtles and crocs? ...
Title: No Slide Title Author: Derek girman Last modified by: Derek Girman Created Date: 7/6/2000 7:18:50 PM Document presentation format: On-screen Show
Snakes and lizards. Thecodonts (ancestral group of higher diapsids) Diapsids ... day lizards) was the sprawling stance imposed by the position of the legs ...
FOSSILS - any naturally preserved evidence of life - rock fossils, petrifaction, amber fossils, mummification, frozen fossils, fossils in tar. Rock Fossils Petrified ...
Dinosaurs. Instructor: Jason Lederer. MW 9:30 10:45. Paleontology. The study of ancient life ... Often come to different conclusions when working with the ...
Lots of claws and teeth, including huge talon on one digit of forelimbs ... Dinosaurs were huge - could have been effectively homeothermic w/o endothermy ...
Amniotes through Eutherians Chapter 34.6-34.8 By: Francisco Berrios and Siria Arzuaga Amniotes A group of tetrapods that trace back to the same common ancestor.
LECTURE 7: Mesozoic Era 248 mya 65 mya Periods of the Mesozoic Era Triassic 248 mya-206 mya Jurassic 206 mya-146 mya Cretaceous 146 mya-65 mya What Significant ...
Mesozoic Era: Age of Reptiles Chapter 13, Section 3 Mesozoic History The Mesozoic era spanned about 183 million years, and it is divided into three periods: the ...
Higher Chordates Amphibia, Reptilia, & Aves Subphyla Vertebrata Evolution of tetrapods One of the most significant events in vertebrate history was when the fins of ...
Class Chondrichthyes Herpetology is study of: Class Osteichthyes Class Mammalia Dinosauria Crocodilia Testudines Class Amphibia Class Agnatha Class Aves
Chordates Characteristics common to ALL chordates Dorsal nerve cord Pharyngeal slits Notochord Tail Dorsal nerve cord Pharyngeal Slits The wall of the pharynx is ...