Birds and Theropods The Theropods had these traits that are similar in some ways to birds Elongate, mobile and S-shaped neck A foot with 3 toes pointed forward and ...
Hind Foot. 3 Functional. Digits. Bowed Femur. Broadly Exposed. Lachrymal Bone. Typical Features of Theropods. 20 cm. Claws. Front foot. Femur. Hind foot. 2 cm ...
Suchomimus had an elongate skull, probably indicative of being a fish eater (piscivore) ... Tyrannosaur skulls are extremely robust compared to other theropods. ...
Archaeopteryx has very similar skeletal structure to some smaller theropods. Three fingered forelimb. Reversed toe. Bipedalism. Ancestry: Thecodont ...
Characterized by 3 part hip structure similar to that of lizards. Who were the Theropods ... Where are Archaeopteryx found? Mostly in Germany. Cretaceous Coelurosaurs ...
Introduction to Birds. Acorn Woodpecker. Bald Eagle. Peregrine Falcon. American White Pelican ... http://www.ucmp.berkeley.edu/diapsids/saurischia/theropoda.html ...
A survey of dinosaur diversity by clade, age, country and year of description. Michael P. Taylor dino@miketaylor.org.uk Introduction Understanding dinosaur diversity ...
characterized chiefly by a vertebral column. Earliest known was the conodont ... sharing a more recent common ancestor with Allosaurus than with modern birds) ...
Crocs ( and dinos?) muscles pulling liver backward and 'rocking' pelvic bones ... How could phylogeny explain the difference between turtles and crocs? ...
The Brachiosaurus lived in the late Jurassic time period to the early Cretaceous. ... surviving until 140million years ago , during the dawn of the Cretaceous period. ...
Life of the Mesozoic Era main points .. 1.marine invertebrates that survived end Permian extinction diversified and repopulated the seas 2. flowering plants evolve ...
Like reptiles, birds have clawed toes and protein scales on their feet. Fertilization is internal and shelled amniotic eggs are produced. Some birds are flightless, ...
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 ...
Figure 3.1 Paleozoic amphibians, Crassigyrinus (group, incertae sedis) and Diplocaulus (Nectridea). Adapted from Milner et al., 1986, and Milner, 1980.
Water moves heat around the planet; tectonics determines how ... Seafloor spreading causes bulges in ocean basins. Big enough bulges and/or lots of them ...
Most bird communities or faunas are mosaics of species of various ages from various historical backgrounds ... (leaping or gliding) Vigilence Migration, etc ...
... into the Archosauromorpha (Crocs, birds, pterosaurs, and ... differently than crocs. move nares to top of skull. Saurischia. Palaeopoda (4-legged gait) ...
Lots of claws and teeth, including huge talon on one digit of forelimbs ... Dinosaurs were huge - could have been effectively homeothermic w/o endothermy ...
origin of the parasitic feeding guilds in terrestrial ecosystems ... and shared the seas with ichthyosaurs, plesiosaurs, and other marine reptiles. plesiosaur ...
Archaeopteryx One of first bird fossils described (1861) Still the earliest known bird Lived 145 MYA Missing link between birds and reptiles, prominent in early ...
if dinosaurs were dumb and slow, why were they the dominant life form for 150my? ( No non-dinosaur larger than a turkey walked the land during the age of dinosaurs) ...
0 Chapter 18 The Evolution of Animal Diversity Mammals are amniotes that have hair and produce milk Mammals are endothermic amniotes with Hair, which insulates their ...
This 147-million-year-old Archaeopteryx fossil, owned by London's Natural History Museum, ... the world, Archaeopteryx is usually kept in environmentally ...
Triassic - North America and Gondwanaland rift apart; ... Africa and Antarctica/Australia rift apart. End of Jurassic - Eurasia rotates, closing off Tethys, ...
Allosaurus fragilis. Fig. 4 Reconstruction of Cryolophosaurus ellioti ... This orientation is similar in Allosaurus, except for the angle from the neural ...
Chapter 18 Classification Organization and naming systems based on morphology and genetics Humans have a tendency to see commonalities and differences, clustering ...
... C-14 Radiocarbon Types of carbon (isotopes ... Dating Used to date igneous and metamorphic rocks ... in the nucleus 8 8 Stable Oxygen 7 7 Stable ...
The two major schools of classification are evolutionary systematics and cladistics. ... Cladistics is concerned with ancestral and derived characters. ...