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Tooth Attachment Thecodont - set in sockets Pleurodont - attach to side of jaw Acrodont - attach to occlusal surface Mammal Teeth Incisors Simple Used for pincers ...
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Snakes and lizards. Thecodonts (ancestral group of higher diapsids) Diapsids ... day lizards) was the sprawling stance imposed by the position of the legs ...
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Archaeopteryx has very similar skeletal structure to some smaller theropods. Three fingered forelimb. Reversed toe. Bipedalism. Ancestry: Thecodont ...
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Stomodeum invaginates from ectoderm of body covering (breaks through) ... thecodont - fossil birds, crocs and gators, and mammals and imbedded in socket ...
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Archaeopteryx. Described in 1861. Origin of Species: 1859. 145 ... Archaeopteryx. Asymmetrical feathers. Curved claws on feet. Lacked supracoracoideus muscles ...
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Phylogeny of Birds Class Aves. Birds first appear, unambiguously, in the fossil record in the Jurassic (~ 150 mya). First bird is Archaeopteryx.
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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 ...
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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) ...
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Comparative Anatomy Vertebrate Phylogeny: Amphibians, Reptiles, and Birds Kardong Chapter 3 Part 5 Amphibian Characteristics 1st vertebrates to possess cervical ...
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Barney to Big Bird: The Origin of Birds The fuzzy raptor Caudipteryx The discovery of feathered dinosaurs in Liaoning, China, has excited the many ...
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Triassic - North America and Gondwanaland rift apart; ... Africa and Antarctica/Australia rift apart. End of Jurassic - Eurasia rotates, closing off Tethys, ...
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(1) Bottom-dwelling filter feeder with lophophore arms (2) ... (Cephalochordate) (Urochordate) (Enteropneusts) Possible evolutionary tree of early vertebrates ...
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Some have young born alive (viviparous) with extraembryonic ... Cotton Mouth. Broad dark stripe present behind eye. Black crossbands on lighter. background. ...
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This 147-million-year-old Archaeopteryx fossil, owned by London's Natural History Museum, ... the world, Archaeopteryx is usually kept in environmentally ...
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Mesozoic Era (Jurassic Period)- Age of Reptiles ... Labyrinthodont amphibians led to stem ... Figure 5.14: (a) Archaeopteryx (b) pigeon. Literature Cited ...
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REPTILES ... Reptiles
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Most bird communities or faunas are mosaics of species of various ages from various historical backgrounds ... (leaping or gliding) Vigilence Migration, etc ...
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Slide 4 Dermal chromatophore units. Slide 5 ... Porcupine. Common house rats. Orynx. Slide 46 Order Proboscidea. African Elephant. Indian Elephant ...
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Lots of claws and teeth, including huge talon on one digit of forelimbs ... Dinosaurs were huge - could have been effectively homeothermic w/o endothermy ...
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Some have young born alive (viviparous) with extraembryonic membranes ... various ruderal situations such as berms along canals and old-field successional ...
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History of Vertebrates Ch. 20
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The Mesozoic is the time in which the dinosaurs lived. ... Other things may also have been responsible for the presence of the iridium, and ...
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... into the Archosauromorpha (Crocs, birds, pterosaurs, and ... differently than crocs. move nares to top of skull. Saurischia. Palaeopoda (4-legged gait) ...
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Coelom forms from splitting of lateral plate mesoderm (hypomere) ... Monophydont one set, platypus. Feeding. Teeth. New teeth forming. Shape of teeth ...
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differ from other reptiles because their bodies are encased within a protective shell ... birds more than other living reptiles (care for young and four ...
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Earth, Moon and Mars: How They Work
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Introduction to Digestive System What is/are the function(s) of the digestive system? What structures are necessary? How does function vary with form?
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Continental Drift Theory that all the continents had once been joined together ... Alfred Wegener Scientist who developed theory of Continental Drift. ...
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Mammal Characteristics Skull (Cranium + mandible) - Large cranial cavity - See Fig 2-16, p.25 Mammal Characteristics Skull (Cranium + mandible) Greater brain mass Jaw ...
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Download NEET 2018 Solve Biology paper and get Prepare for your Exam. Check Previous Year Paper for all NEET Subject such as Chemistry, Physics, Biology free.
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The Origin and Early Evolution of Amniotes Amniotes diverged from anthracosaurs in the Carboniferous period (late Paleozoic) The Amniotic Egg (shelled egg ...
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The skull bones of this herbivorous reptile have undergone enormous thickening. ... Dinocephalians: most were large, with massive bodies and thick skulls. ...
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characterized chiefly by a vertebral column. Earliest known was the conodont ... sharing a more recent common ancestor with Allosaurus than with modern birds) ...
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Birds Chapter 27 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Excretory System Urine is formed in large, paired metanephric kidneys.
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Lizards, PowerPoint 1
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... infernalis (Big Bend National Park, Texas, photo:H.W.Greene) ... Longhorns (Bos taurinus, Wichita Mountains, OK; photos:H.W.Greene) What is a mammal? ...
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The blue whale (Balenoptera musculus) is the largest mammal. The longest blue whale ever recorded was a 108-foot long. Blue whales can weigh over 100 tons. ...
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Mammals have incisors, canines, premolars and molars in both the upper and the lower jaw. ... Canine teeth bite and tear food. Premolars shear, grind and mash food. ...
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