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49 Cards in this Set

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  • Back
Bipedal predators that include dinos like spinosaurus, trex, and smaller ones too
plants that were common in the Jurrasic period
plants that are commonly trees, including pines, cedars, cypresses, yews, redwoods, etc.
duck-billed dinosaurs
smaller theropods, usually called raptors
Dinosaur renaissance
John Ostrom is famous for the links between birds and dinos. Robert Bakker argued that dinos were warm-blooded.
Flowering plants, the most common and dominant plant type
giant marine reptiles that resembled fish and dolphins. Appeared slightly before dinosaurs and were air-breathing
Carnivorous marine reptiles that were not dinosaurs
Flying reptiles. First vetebrates to obtain flight
Serpentine marine reptiles
internal heat, like mammals
rely on the enviroment and behavior to regulate body temp, like reptiles
Maintain constant body temperature, like mammals
Having fluctuating internal body temp depending on local enviromental factors
predator/prey ratio
predator weight x number/prey weight x number
Bone histology - slow growing
collagen fibers laid down parallel in each layer, producing bone that has dense packing of mineral crystals all oriented in same direction. "lamellar" bone
Bone histology - fast growing
collagen laid down in haphazard way producing fibrolamellar in mammals/birds
Haversian canals
canals in bones where blood vessels and nerves are located. Bone from warm blooded have more canals than cold blooded
Lines of Arrested Growth (LAGs)
formed whereever there is a temporary halt to bone deposition. Normally found in mammals, due to envirmental factors
heat production is mass. heat loss is surface area. the larger an animal gets, the heat loss decreases.
the study of mechanical, physical, and biochemical functions of plants and animals
Nasal turbinates
long, narrowed bone shelf that which protrudes into the breathing of the nose. Most warm blooded animals have them and cold blooded do not
natural or man-made cast of the brain cavity
raptor discovered by Ostrom that sparked the debate as to whether dinos were wb or cb
Arboreal hypothesis
Trees down scenario
Cursurial hypothesis
Ground up scenario
Thomas Henry Huxley
Bird guy
small, bipedal carnivorous dinosaur that lived in the late Triassic
the most primitive dinosaur found with feathers
Bird like dinosaur
turkey sized feathered dinosaur from China
Gubbio, Italy
where iridium and the K-T boundary was first found
the crater caused by the asteriod that struck the Yucatan peninsula
the peninsula in Mexico where an asteroid struck 65 million years ago
natural glass objects that were formed when asteriods hit the earth
Deccan Traps
large igneous province located on the Deccan Plateau of west-central India and is one of the largest volcanic features on Earth
Intrinsic factors
factors contributing to the K-T extinction from the earth, including volcanoes and marine regression
Extrinsic factors
outside factors contributing to the death of the dinosaurs including asteriods, gamma rays, and comets
Nuclear winter
thought to occur after nuclear war or asteriods, the air becomes cold b/c of soot and dust in the air
What was the biggest sauropod?
Brontosaurus, AKA Apatosaurus
Biggest brain?
Best brain/body size ratio?
What was the smallest sauropod?
Magyarosaurus dacus
Smallest Theropod?
When did flowering plants first appear?
Angiosperms, in the early Cretaceous
What kinds of plants did animlas of Triassic and Jurassic have available to munch on?
Gymnosperms and conifers
Why do scientists think icthyosaurs gave birth to live young?
Some were found at sea with embryos in their stomachs and one specimen even being born and got caught in the canal and died
What are the differences in the anatomy of the two main groups of pterosaurs?
One has an elongated tail and small head. The other is the opposite