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RUTGERS / Earth and Planetary Sciences / EPS 460 / What distinguishes dinosaurs from non-dinosaurs reptiles?

What distinguishes dinosaurs from non-dinosaurs reptiles?

What distinguishes dinosaurs from non-dinosaurs reptiles?


School: Rutgers University
Department: Earth and Planetary Sciences
Course: Dinosaurs
Professor: Lauren adamo
Term: Fall 2016
Tags: linean, Classifications, systematics, Early, and verts
Cost: 25
Name: Dinosaurs - Week 3
Description: Sorry about the wait. My other laptop broke! I'm not gonna post study guides for this class. She posts her own… I'm merely going to extract the relevant information from he slides weekly. Suh dude
Uploaded: 10/07/2016
4 Pages 33 Views 1 Unlocks

Dinocauirs 1 - Week 3

What distinguishes dinosaurs from non-dinosaurs reptiles?

9/20 —

Dino Systematics

Rekent Backsler - " Dinesoraurs ont fast, agile, active"

· Lirieom Classification (ke VERY families withe Hie (lodogrovmo yo)

Monophyletic group all members have a lo and Hue classifications

What is the difference between class amphibia and class reptilae?

If you want to learn more check out What is the difference between external motivation and internal motivation?

(syropiere orpho) single common ancestor

Cclade NOTE: Huis is a buscar (group of oro, amsims



NOTE: this is a tre


group a

may bw a common ancestor

different ancestors

2) Polyplyly, Polyplyietic group members one descended from

What is chondrichytes?

Don't forget about the age old question of What is the tendency of a higher electronegative atom to pull electrons toward itself?

3) Helophyly, Holophylene group: all memkes are descendants of a single common



A is not a descendant

an and





-> NOTE = 'clade - taxm consisting of an ancestral species ond All its descencounts

' the tuns hielophyletic and monophyletic seem to be synonymous (?) 4) Para plusly. Pavaphyletic group some members are descendants of a single common If you want to learn more check out Define the krebs cycle.


E NOT included

* Fill in chont on slide 25 We also discuss several other topics like How do you ask the question?

• Dinosaurs one between

the Reptilia

and Aves classifications



the following cladogrown:



choo undon oster



Amalu bisa




Momo alia




*MAY need to know what differenkates each (it's a drag Don't forget about the age old question of What does a scientist look like?

I knew) Odontolo) I Grade Tetrapoda) Class Amphukia —> 'anamniste (layo egge m water)



Classes: Reptilia We also discuss several other topics like Many people think that adaptation is a trait that improves the survival chances of an organism. under what circumstances would a survival-enhancing attribute be selected against?


I Grade Amnickou amniotic egg ( lays eggs on land, or reloon Fertilized egg in










• What dishnquishes dincgame upright poshine.

TEND of 9/20

9/23 -

Earliest Vertebrates


MEMORIZE ( re-print and re-fill in) Geologic Time Chont


Pisces )

Per to hood parts, most life was

wriaca (I messed up)

Ediacaran Arurnals' : sessile (fixed in one place) and soft-bodied - sponges, jellyfish, etc

not preserved well

· The Comkri en Explosion was the 1st nokceable fesail record - chopactwized by 'exoskeletons

2 filter feeders 3 burrowers 4 beri Home zone (lowest level of a body of woter)

'woimo ' Reefs, which increased cxygen levels and provide a place for organisms to

chill («r a prey ground) Fasculitated the evoluhon of early vertebrates (fishes, or - exoskeleton --> vertebrate ( MAY need to know adui of evdukionomy

Cephalochordates are the ancestors to vertebrates chenacteristics/trowits)

Lo sheesh... - net ochord nerve chord running alovig the back of Hue body

La for swimming and teedling, it acted as on anchor for muscles

Lo possue arcumci notocherd bordened with phosphate ( we gettin' sciency)

HOW THEY EVOWED, class by class Agriotha : jawless vertebrates Fish (15+ to do this vertebrae ish ) - lampreys, hagfish - come before pisces - next trout to edve: Jaws ( the Wrathostomata, or jawed vertebrates) - o jawo probably forot evded as a way to regulake resparation * Placedems : jarred, plated skin (1st appeared in Silurian pretty extinct

- loroge, predatory - developed head shield, teeth

@ Chondrichthyes: janved, poired fing, scoles, contilage(niet boure) skeletons

- appeared aroumd same time as placederms - showks, stingrays Osteichthyes joved bony fishes (Oleme and Bubbles, etc.)

4 next, und in order to promsition to lond, LIMBS evolved --Evolution of limbs

axial skeleton - along the cehal axis (like humous)

· appendiculon skeleton - has appendages

get you


dipnici- icke fin fish (?)

=> Rhipidishia : loke tanned fish Hiat one anscectorsię to all of tetapoda

—> Cressoptryciares/Sarcoptecii (cypeand in the lake Silbrion)

- barry wel fleshy, love poived fias, joined to body by a single bort - wm bons sumlon to tetrapods (humerus lol, ulna)

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