Dinosaur class

As we have defined it in class, a dinosaur is

a Mesozoic terrestrial reptile that walks with an upright stance

Dinosaurs lived in the __________ Era?

Mesozoic

Dinosaur fossils are found

on all continents

A fossil is

evidence of life preserved in rocks

Scientists who study fossils are called _________________. (spelling counts, so get it right)

paleontologists

The first described Iguanodon bones were collected by

Maryann Mantell

Sir Richard Owen described the Dinosauria in the year __________. (e.g. 2018)

1842

The "Bone Wars" were waged between

Cope and Marsh

Quadrupedal means

walks on four feet

Upright stance means

walks with legs directly under body

The type of fossil that tells us most about the appearance of an extinct animal is a

body fossil

The replacement of original material by minerals carried in groundwater is called

preservation

Which of the following statements is correct?

Pterosaurs and marine reptiles were NOT dinosaurs

The types of fossils are

Body, trace and chemical

In order for an organism to become a fossil, which of the following must happen?

Rapid burial, preservation, incorporation into rocks

The largest known dinosaur (that we have discussed so far) was >blank< (spelling counts)

Argentinosaurus

First published account of dinosaurs

William Buckland

Incorrectly described a dinosaur femur as the thigh bone of a ginat human

Robert Plot

Named Iguanodon

Gideon Mantell

Found the first Tyrannosaurus rex fossil

Barnum Brown

Led the Central Asiatic expeditions

Roy Chapman Andrews

In this class, exams count as percent of your grade?

45%

In order to infer that dinosaurs had different colored skins we

use the present as the key to the past

The scientists most responsible for revolutionizing our perceptions of dinosaurs were

Ostrom and Bakker

The basic foundation of scientific inquiry is

evidence gathered from the natural world

Which of the following is NOT a characteristic of reptiles?

warm blooded

A depiction evolutionary relationships of organisms descended from a common ancestor is

a phylogeny

The primary division among reptiles is based on

The arrangement of their skull bones

Post orbital means

behind the eye socket

A fenestra is

a hole in the skull

A diagram of a phylogeny is called a

cladogram

Fenestrae in skulls serve what function?

Lighten the skulls and provide more room for muscle attachment

The nares is

the nasal opening

Dinosaurs are diapsid reptiles. This means they

have two post-orbital fenestrae in their skulls

The acetabulum

is located in the pelvis and helps facilitate upright stance

The evolutionary innovation that allowed animals to move out of the water onto land successfully was

the amniotic egg

Which of the following is NOT a defining characteristic of archosaurs?

limbs adapted for swimming

Within the archosaurs, the crocodiles are separated from the pterosaurs and dinosaurs on the basis of

ankle shape

Which of the following are all archosaurs?

crocodiles, pterosaurs, dinosaurs

Dinosauria are divided into two clades based on what?

the arrangement of the pelvic bones

Which of the following is NOT a defining characteristic of dinosaurs?

limbs adapted for flight

The earliest confirmed dinosaurs found to date are:

Eoraptor and Mbiresaurus

The continents began splitting apart in the

Late Jurassic

A large land mass such as Pangea

causes intense weather and temperature extremes

During the Cretaceous, North America was

divided by the Western Interior Seaway

After 2 half lives, how much Parent element will remain?

25%

Sediments are generally transported by

water

Dinosaur fossils are typically found in which depositional environments?

lakes and swamps

Early dinosaurs were (choose all that apply)

bipedal, slender, small

In geology, a formation is

a group of strata that can be mapped on the Earth's surface

Which of the following is NOT true of Nyasasaurus and Asilisaurus?

they are both dinosaurs

When we say one layer of rock is older than another, we are giving its

relative age

The first dinosaurs appeared ______ million years ago. (enter only the number, no words or letters.)

230

The largest dinosaur in the Triassic was

Plateosaurus

Which of the following is NOT true of Triassic dinosaurs?

they were huge

On the map below which places are where the earliest dinosaurs were found?

Argentina, South Africa

Nearly all Ankylosaurs are found in the

Cretaceous

An inset tooth row

allows better food gathering

Which of the following is NOT characteristic of thyreophorans?

large head and bipedal stance

The large optic lobe in the brain of Leaellynosaura suggests

they had good eyesight

All ornithischians are characterized by

Leaf-shaped teeth, backward pointing pubis, ossified tendons

A primitive dinosaur

has only the characteristics of the last common ancestor, but little more

A facultative quadruped

Prefers to walk on two legs but can walk on four

The premaxilla in the hadrosaur

forms the duck bill

Hadrosaurs were most common in the

late Cretaceous

The main differences between Iguanodonts and Hadrosaurs are related to

increased efficiency in digestion

Iguanodonts are

Primitive ornithopods

Gideon Mantell's "nose spike" on Iguanodonts really belongs where?

First digit of the hand

Large, closely-packed tooth batteries are characteristic of

Hadrosaurs

Crested dinosaurs may have used their crests for

signaling

Which of the following do NOT contribute to better food processing in Hadrosaurs?

elongated nares

Which of the following is NOT a characteristic of hadrosaurs?

thumb spike on the first digit of hand

One good piece of evidence for hadrosaur migration is

huge trackways

Unossified bone ends on baby Maiasaura mean

the babies could not move far and had to have parental care

Which of the hip structures below could belong to a hadrosaur?

Longer pubis

Ankylosaurs are found mainly in the

Cretaceous