2025 GRADED A+
✔✔short, column like - ✔✔members of the sauropod clade were very large animals with
_____ feet
✔✔less heavy and smaller in size - ✔✔compared to other sauropods, diplodocus was:
✔✔was very long and flexible like a whip - ✔✔Diplodocus had a tail that was unique
compared to other sauropods in that it:
✔✔having especially long front legs compared to their hind legs - ✔✔Brachiosaurs can
be distinguished from other sauropods by:
✔✔2 - ✔✔Sauropod babies are though to have added roughly ____ tons of weight per
year until they reached about 20 years of age, and continuing to grow ( at a slower rate)
after that.
✔✔the absence of sauropod fossils in North America through most of the Cretaceous -
✔✔the "sauropod hiatus" refers to
✔✔alasmosaurus - ✔✔the only sauropod found in North America at the end of the
cretaceous is
✔✔orithischian - ✔✔Ornithopods had which kind of hip structure
✔✔extra mobility of the skull due to extra joints in the head - ✔✔Cranial Kinesis is a
term that refers to
✔✔unique skull shapes and ornamentations like beaks, bills, and crests - ✔✔the
ornithopods are easily distinguished from other dinosaur clades by:
✔✔lower jaw joint located below the level of the tooth rows - ✔✔which of the following
traits can be found in all members of the ornithopod clade?
✔✔biped - ✔✔hypsilophodon was a
✔✔they had many rows of teeth that constantly replaced old ones as they wore down -
✔✔which of the following NOT true regarding Heterodontosaur teeth and jaws?
✔✔a small plant eating dinosaur - ✔✔the ornithopod heterodontosaurs was:
✔✔had an extra joint that allowed a wider range of jaw movement - ✔✔Unlike that of
Heterodontosaurus, the skull of Hypsilophodon:
, ✔✔as a primitive member of the ornithopods - ✔✔the classification of heterodontosaurs
on the dinosaur phylogenic tree is:
✔✔basically just spikes - ✔✔one of the unusual features of Iguanadons is their thumbs,
which were:
✔✔they were the first dinosaur species to be described and illustrated by a scientist -
✔✔which of the following is true of iguanadons?
✔✔individual hooves on three digits of their front feet - ✔✔which of the following of
these unique features do Iguanadons have?
✔✔was a toothless part of the mouth in front of the toothed area - ✔✔one of the primary
features that all members of the iguanadontian clade have in common is a beak that:
✔✔the bones, droppings and footprints are abundant in the fossil record -
✔✔Paleontologists know more about hadrosaurid dinosaurs than any other kind of
dinosaur. That's primarily because
✔✔hadrosaurids - ✔✔the popular nickname "duck billed dinosaurs" is referring to the
____ family of ornithopods
✔✔sound generation and communication - ✔✔the horn and ornamentation of
hadrosaurs skulls were most likely used for:
✔✔hundreds of teeth cemented together - ✔✔which of the following best describes the
"Dental Battery" of Hadrosaurids?
✔✔much less - ✔✔corprolites are _____ abundant than preserved bone fossils
✔✔insects/invertebrates in rotten wood - ✔✔Study of coprolites (fossilized dung)
indicate that hadrosaurs sometimes ate______ for boosts of protein
✔✔the bone fragments act as a mineralizing agent to help the fossilization process -
✔✔the reason coprolites from carnivorous dinosaurs are preserved more often than
plant eating dinosaurs is:
✔✔Huayangosaurus, middle Jurassic - ✔✔The most primitive known stegosaur is
______, which lived during the ______ period.
✔✔false - ✔✔True or false: all members of the clade Thyreophora were quadrupedal (
walked on four legs)