Term
|
Definition
|
|
Term
| (Remains found) Known from |
|
Definition
| known from complete skeletons, tracks, nests, eggs, embryos, skin impressions, 3D body fossils, and stomach contents! |
|
|
Term
|
Definition
| "Birdfoot" (Don't really have "bird feet" |
|
|
Term
|
Definition
-Teeth in maxilla more dorsal (higher) than those in premaxilla (i.e. tooth rows at different heights)
-Occlusal surface more dorsal than jaw joint
-Premaxilla w/ elongate process
-Crescent-shaped paroccipital process |
|
|
Term
| Teeth in maxilla more dorsal (higher) than those in premaxilla (i.e tooth rows at different heights) |
|
Definition
|
|
Term
| Occlusal surface more dorsal than jaw joint |
|
Definition
|
|
Term
| Premaxilla with elongate process |
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
-small-medium sized
-Bipedal
-North America & Eurasia
-originally thought to be monophyletic; is now known to be paraphyletic |
|
|
Term
| Hypsilophodontidae first ornithischians to evolve ________ |
|
Definition
|
|
Term
|
Definition
= ability of maxilla to swing laterally (outward) when mouth is closing
-enables maxillary teeth to shear against mandibular teeth
-is an advanced form of chewing |
|
|
Term
| Hypsilophodontidae first ornithischians to evolve opposable ________ |
|
Definition
|
|
Term
|
Definition
| Small hypsilophodontid with enormous eyes |
|
|
Term
| Diagnosis of Iguanodontia |
|
Definition
premaxilla expanded and toothless
-they have a beak |
|
|
Term
| (Iguanodontia) 1822: Dr. Gideon Mantell |
|
Definition
-discovers teeth of Early Cretaceous herbivorous dinosaur Iguanodon (“iguana teeth”)
-published description in 1825
-Doesn’t know about dinosaurs |
|
|
Term
| (Iguanodontia) Sir Richard Owen |
|
Definition
| 1841: uses fossils of Iguanodon, Megalosaurus, and Hylaeosaurus as basis for establishing the order Dinosauria |
|
|
Term
Iguanodontia
Size:
Pedal:
Era/Location: |
|
Definition
-medium-very large
-facultative bipeds
-Early Cretaceous: North America, Eurasia, Africa, possibly Australia
-Late Cretaceous: North America, Eurasia, South America, Antarctica |
|
|
Term
| Diagnosis of Iguanodontoidea |
|
Definition
-diastema (gap) between beak and maxillary teeth
-narrowed hands
-hoof-like |
|
|
Term
| (Iguanodontia) Hoof-like pedal unguals |
|
Definition
|
|
Term
| (Iguanodontia) Narrowed hands |
|
Definition
|
|
Term
| (Iguanodontia) Hadrosauridae known as _______ _______ dinosaurs |
|
Definition
|
|
Term
| (Iguanodontia) Hadrosauridae |
|
Definition
“duck-billed” dinosaurs
known from complete skeletons, tracks, nests, eggs, embryos, skin impressions, 3D body fossils, and stomach contents!
medium-very large
facultative bipeds
Late Cretaceous: Eurasia, South America, Antarctica, especially North America
formed huge herds of possibly millions of individuals |
|
|
Term
| Diagnosis of Hadrosauridae |
|
Definition
-well-developed dental batteries (assemblage of multiple, interlocking teeth that form broad grinding surfaces)
-loss of antorbital fenestra
-8 sacral vertebrae
-loss of digit I on manus
-arms elongate (~ legs) |
|
|
