Week 3 Flashcards
Frugivore
eats fruit, could have a sharp hooked beak like a parrot to rip and tear the fruit apart
Piscivores
eat fish, have tall conical teeth and long jaws that can close quickly. or in birds a spear shaped beak.
insectivores
eat insects, usually have some digging forelimbs that are powerful but short. can lack teeth entirely or have sharp piercing teeth to make it through exoskeletons
durophagy
breaking and eating of bones, takes rounded teeth and then very strong jaw
Resorption
taking back the tooth root when it is time to shed the crown of the tooth
dinosaurs with dental batteries
Hadrosaurs, ceratopsians. these are analogous structures (same idea but no common ancestor)
Hadrosaur dental batteries
The surface is mostly horizontal and is used by moving the jaw back and forth grinding the plants
Ceratopsians dental batteries
an almost vertical surface is formed and plants are sheared like a pair of scissors
Gastroliths
small collections of rocks found in the ribcages of oviraptorosaurs and ornithomimids, they are reminats of gastric mills
gastric mills
found in herbivores which usually lack teeth these are used to mechanically break up the plants with little rocks and muscle action
Dromeosaurs
a group of theropods that have thin tails with special support systems. they also have a large sickle claw that is raised on above the ground to keep it sharp
Spinosaurs
theropods that have skulls like crocodiles and are thought to be piscivores
Alvarezsarus
Group of small theropods, thought to be insectivores due to the short and strong forelimbs, with a large spade shaped claw
Tyrannosaurs
Group of theropods with reduced forelimbs but large head. had large serrated teeth and very powerful jaws that were probably capable of durophagy
Scavenging
eating a dinosaur that you had no part in killing. durophagy could give an increase to how much you could gain as it doesn’t have to be meat but almost dinosaur who hunts also scavenges when the opportunity arrises
