DeinonychusAcrocanthosaurus

Eolambia

Tennontosaurus nodosaurids

nodosaurids

nodosauridteeth

neoceratopsian teeth

tiny pleurocoelidbrachiosaurid teeth

Abydosauruspleurocoelidbrachiosaurids

newsauropods

Pachycephalosaurid teeth

tyrannosauridteeth

Utahraptor CedarosaurusPlanicoxa Dakotadon ?

&

Gastonia

new hypsilophodontid

new titanosaurid

troodontid teeth

new troodontid

100

75

65

125

150

175

200

250

225

CR

ETA

CEO

US

MIL

LIO

NS

OF

YE

AR

S A

GO

JUR

AS

SIC

TRIA

SS

IC

centralUtah

MORRISON FORMATION

Mussentuchit Member

Yellow CatMember

Ruby RanchMember

Buck

horn

Co

nglo

mer

ate

Poison Strip Sandstone

CEDA

R M

OUNT

AIN

?FO

RMAT

ION

easternUtah

Albian

Campanian

Aptian

Uppe

r

Isolation of NorthAmerica resulting in local extinctionsand increased endemism

Widely-knownJurassic dino-saur faunas

Non-dinosaurian tracks

First North American dinosaurs

Dinosaurswith Europeanaffinities

New lowestCretaceous faunal level

Many horizonswith dinosaurtracks

Local extinction of sauropods

First centrosaurines& hadrosaurids

Diverse tooth fauna

Highest diversity NorthAmerica ceratopsid & hadrosaurid fauna

Southern & fauna

Tyrannosaurus Alamosaurus

First ceratopsomorphs

hiatus

hiatus

hiatus

Asian immigration induced extinctionand origin of North American Late Cretaceous dinosaur fauna

Animantarx

Tyrannosaurus

TorosaurusAlamosaurus

Ornithomimus

ornithomimid

Edmontonia

Hagryphus

Parasaurolophus

Cedarpelta

Nedcolbertia

Ferron Sandstone - Smoky Hollow Member

DAKOTA FORMATION

Blue Gate Member MANCOS SHALE

TROPIC SHALE. - Tununk Member MANCOS SHALE

NORTH HORN FORMATION

KAIPAROWITS FORMATION

WAHWEAP FORMATION - MASUK FORMATION

NothronychusZuniceratops advanced

hadrosauromorphs

new tyrannosaurids

new tyrannosaurid

ankylosaurid teeth

hadrosaurine newpachycephalosaurs

new chasmosaurines

CURTIS - SUMMERVILLE FORMATION

ENTRADA SANDSTONE

PERMIAN

CARMEL FORMATIONPAGE SANDSTONE

NAVAJO SANDSTONE

KAYENTA FORMATION

MOENAVE FORMATION - WINGATE SANDSTONE

CHINLE FORMATION / GROUP

MOENKOPI FORMATION

Coelophysis

Megapnosaurus

MegapnosaurusGrallator( tracks)

Dilophosaurus ?

Seitaad Otozoum

&( tracks)

Megalosaur (Megalosaurophus tracks)

Sauropod (Parabrontosaurophus tracks)

Dilophosaurus (Eubrontes tracks)

tiny ornithopod

Brachiosaurus

Allosaurus

Apatosaurus

Camarasaurus

Camptosaurus

Stegosaurus

Ceratosaurus

new carnosaurid

new camarasaurid

Dryosaurus

Gryposaurus

Diabloceratops

Haplocanthosaurus

Torvosaurus

Diplodocus

Marshosaurus &Stokesosaurus

Falcarius

new large polacanthineankylosaur new

iguanodont

Gra

nd S

rair

case

- E

scal

ante

Nat

iona

l M

onum

ent

San

Raf

ael

Swel

l -

Arc

hes

Nat

iona

l P

ark

Din

osau

r N

atio

nal

Mon

umen

tC

leve

land

Llo

yd Q

uarr

y

Sout

hern

Uta

h -

St.

Geo

rge

Din

osau

r D

isco

very

Sit

e

long-horned centrosaurines

DINOSAUREXTINCTION

ORIG

IN O

FFL

OWER

S

FIRSTDINOSAUR

Upper STRAIGHT CLIFFS FORMATION

Maastrichtian

SantonianConiacian

Turonian

Cenomanian

Barremian

Neocomian

Tithonian

Kimmeridgian

Oxfordian

Callovian

BathonianBajocian

Aalenian

Toarcian

Pliensbachian

Sinemurian

HettangianRhaetian

Norian

Carnian

Ladnian

Anisian

OlenekianInduan

UTAH’S DINOSAUR RECORD

UTAH’S MESOZOICROCK RECORD

GEOLOGIC TIME SCALE

major time gaps in stratigraphic record in white