Term
| Which way do Saurischian pelvis' point and Ornithischian pelvis' point |
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Definition
Saurischian = forward
Ornithischian = backward |
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Term
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Definition
-Long necks and tails, forlimbs shorter than hind limbs-but not by much.
-Small skull and brains
>Large nare's HIGH UP on skull rather than end of snout
-Spatulate, spoon-like teeth
-no cheeks
HERBIVORE |
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Term
| Dinosaurs lived from when to when? |
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Definition
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Term
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Definition
-Rocky metoerite landed, the chicxulub crater in the Gulf of Mexico
-Molten glass of tektites dates at 65 MA |
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Term
| True or False. Evolution of feathers happened before the evolution of birds? |
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Definition
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Term
| Feathers first arose in... |
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Definition
| Primitive Aves in the Jurassic |
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Term
| Feathers on small dinosaurs suggest that they... |
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Definition
| Were homeothermic (were able to maintain a constant body temperature) |
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Term
| Evolution of flight in birds required that the direct theropod ancestor be large or small? |
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Definition
| Have a very small body size |
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Term
| First evidence that there was the end-cretaceous extra-terrestrial impact was? |
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Definition
| A hugely augmented portion of iridium in the boundary sediments. |
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Term
| There was a rapid radiation of primitive birds in the |
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Definition
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Term
| End cretaceious extinction included |
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Definition
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Term
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Definition
-Tsunami deposit
-Tektites (molten mass ejected from impact craters)
-Paleogene (part of terrestial) over cretaceous |
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Term
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Definition
Apatosaurs- "pat the horse", nares high on skull, small brains and skulls, pillar like limbs, quadroped
-Diplodocus, nares mid snout, only dinosaur with longer front limbs than hind limbs
SAUROPODS--vertebrae contained hollow spaces to allow for much lighter strong structure, also air sacs in these hollows to lighten the density and stiffen the neck
-Drank a LOT of water (avian respiratory and reptilian metabolism) |
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Term
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Definition
1) Kept them warm, increased growth
2) Self defense
3) May have been cold-blooded, so it could be large |
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Term
| Did Apatosaurus grow rapidly? |
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Definition
| No. They did not grow rapidly and continued to grow throughout their lives |
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Term
| About how many valid genera of dinos has been described to date? |
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Definition
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Term
| Sauropodomorpha evolved in the... |
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Definition
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Term
| What type of pelvic structure do theropods have? Saurischian or Ornithischian? |
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Definition
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Term
| Triassic theropods are all... |
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Definition
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Term
| True or False, Sauropods ate anglosperm and conifers? |
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Definition
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Term
| The evolution lineage of coelophysis-->allosaurus-->tyrannosaurus rex |
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Definition
| Inolved reduction in speed with increase in size |
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Term
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Definition
| Where quill feathers would have been anchored to the boney knowbs of ligaments. |
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Term
| True or false, advanced ornithischians replaced sauropods as major herivore in cretaceous? |
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Definition
| True--because ornithischiens were more efficient at processing food |
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Term
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Definition
| Primitive theropod, late triassic |
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Term
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Definition
| Late Jurassic, primitive tetanurae (between coelophysis and t-rex) |
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Term
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Definition
| Tyrannosaurus, latest cretaceous |
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Term
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Definition
| The ability to maintain a constant body temperature |
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Term
| Common term for endothermy is |
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Definition
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Term
| How many digits does coelophysis have? |
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Definition
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Term
| Muscles connected to the furcula help manipulate the... |
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Definition
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Term
| True or false, theropod has three digits on the ground? |
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Definition
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Term
| True or false, theropods arose in the Jurassic. |
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Definition
| False. Late triassic. Theropods are all bipedal p.s. |
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Term
| How many digits are on the hand and foot of the theropod? |
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Definition
| Four on the hand, three on the foot. |
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Term
| Change in theropod body size... |
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Definition
| not unidirectional for the clade |
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Term
| To evolve efficient flight the body had to be big or small? |
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Definition
| Size had to remain small. |
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Term
| True or False, dromeosaurids belong in teh clad Tetanurae |
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Definition
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Term
| The enlarged claw on teh hind foot of dromeosaurids is on digit |
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Definition
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Term
| In dromeosaurids, the pubic boot was |
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Definition
| pointed backward for muscle attachment for the tail |
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Term
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Definition
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Term
| From detailed studies of T-rex we know that they were scavengers, not hunters, because |
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Definition
| the legs were too short for the body size to make it speedy enough |
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Term
| Dromeosaurids are characterized by an enlarged claw on hind digit 2 and |
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Definition
| a backward pointing pubic bone |
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Term
Deinonychus
Velociraptor--had bit of feathers, couldn't fly |
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Definition
-Genus Dromeosaurid
-Extreme raptor, sickle-shaped claw on 2nd digit of hind foot |
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Term
| Archaeopteryx lived at same time as diplodicus and apatosaurus? True or False? Same Place? |
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Definition
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Term
| The clade most related to Aves is |
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Definition
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Term
| Tyrannosaurids had what kind of neck? |
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Definition
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Term
| Skulls of sauropods have nares where? |
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Definition
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Term
| Clade theropoda known for having? |
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Definition
| llow bones, pointed serrated teeth, and a furcula |
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Term
| Very large sauropods have... |
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Definition
| extra vertebrae in the cervical region |
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Term
| A fundamental taxonomic grouping comprising organisms which share a basic body-plan or pattern of structural organization is called a phylogeny |
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Definition
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Term
| More dinosaur genera are known from the Cretaceous than both the Jurassic and Triassic because |
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Definition
| c) there are more Cretaceous sedimentary rocks preserved |
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Term
| There are hypotheses that sauropod cervical vertebrae had air sacs connected to the lungs. Such structures would |
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Definition
| provide the neck with less density and more stiffness for muscle control |
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Term
| Coeolphysis and Dilophosaurus are |
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Definition
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Term
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Definition
| d) the fused clavicle bones |
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Term
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Definition
| a) had reduced to no teeth and a probable ominivorus diet |
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Term
| The Cretaceous Period is named |
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Definition
| b) after extensive chalk deposits across Europe |
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Term
| Herbivorous dinosaurs from the late Cretaceous could have eaten |
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Definition
| Ferns, conifers, ginkgo, and angiosperms |
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