Evolution Cladistics Labs

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8UnderstandingCladisticsPartIIWorksheet21.pdf

Classifying with Cladistics: Part II

Now that you have mastered cladistics, a method that University level scientists do everyday, you are ready to use cladistics to determine how the following organisms are related. Put a plus(+) if the animal has the feature, a negative (-) if the animal does not have the feature, and a question mark (?) if you and other do not know if the animal has the feature. You do not need to fill in the dark grey boxes. Examine the photos carefully!

Organism B

ac kb

on e

Fo ur

L im

bs

La ys

E gg

s

S ca

les on

B od

y ( ta

ke a

go od

loo

k a t t

he le

gs )

H ole

in th

e H ip

S oc

ke t /

Le

gs go

st ra

igh t d

ow n

Fe at

he rs

2 Fr

on t L

im bs

ar e m

od ifie

d f or

flig

ht

H air

Li ve

B irt

h

H oo

ve s

E ve

n n um

be r o

f t oe

s

O dd

nu mb

er of

to es

Snail

Fish

Salamander

Alligator

T-rex

Mockingbird

Duck

Mouse

Bat

Deer

Rhinoceros

Fossil Horse

Uncovering Florida’s Fossil Pas may not be reproduced without permission of the author, Larisa R. Grawe DeSantis. t

For educational purposes only.