Exam 2 Flashcards

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Flaschcards for Exam 2 in Biol 453 Winter 2025

33 Terms

1

What are the key characteristics of lissamphibia?

Smooth and glandular skin
Bicuspid, pedicillate teeth
Short ribs
Hands with four fingers

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2

What are the key characterisitcs of salamanders?

Tails through their whole lives
No external ear
Few dermal skull bones
Regenerative abiLITY

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3

What are the key characteristics of gymnophiona?

Burrowers in the tropic
Limbless with small eyes
Chemosensory tentacle
Double row of teeth on upper jaw

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4

What are the key characteristics of frogs?

Short vertebral column
Lumbar is fused to be urostyle for more muscles attatchments
No tails in adults
Fused radius/ulna and tibia/fibula
Long ankle bones similar to radius/ulna and tibia/fibula

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5
<p>What is A?</p>

What is A?

Reptiles

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6
<p>What is B?</p>

What is B?

Varanosaurus

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7
<p>What is C?</p>

What is C?

Dimetrodon

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8
<p>What is D?</p>

What is D?

Lycaenops

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9
<p>What is E?</p>

What is E?

Thrinaxodon

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10
<p>What is F?</p>

What is F?

Morganucodon

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11
<p>What is G?</p>

What is G?

Mammal

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12
<p>What is H?</p>

What is H?

Amniota

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13
<p>What is I?</p>

What is I?

Synapsida

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14
<p>What are J?</p>

What are J?

Lateral temporal fenestra
Canine tooth

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15
<p>What are K?</p>

What are K?

Coronoid process on dentary
Femur more upright
Thoracic and lumbar vertebrae

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16
<p>What are L?</p>

What are L?

Secondary palate
Complex post canine teeth

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17
<p>What are M?</p>

What are M?

No post orbital bar
Diphyodont teeth
Theuodont and gomphosis
Heterodont

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18

Hagfish science name

Myxinoidea

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19

Hagfish traits

No extrinsic eye muscles*
1 semicircular canal*
Slime*
Tissue isosmotic with sea water
Scavengers

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20

Lamprey science name

Petromyzontiformes

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21

Lamprey traits

Branchial basket*
Parasitic
2 semicircular canals

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22

Cyclostomi animals

Hagfish
Lampreys

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23

Cyclostomi traits

Molecular data
Keratinized teeth

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24

Chondrichthyes animals

Sharks
Rays
Chimaeras

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25

Chondrichthyes traits

Cartilaginous skeleton*
Pelvic claspers*
Ampullae of Lorenzini (electroreceptors)*

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26

Osteichthyes traits

Bone
Foregut diverticulum (lung/swim bladder)*
Lepidotrichia*

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27

Actinopterygii traits

Muscles do not extend to fins*

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28

Sarcopterygii traits

Muscle into fin*
Monobasal*
Chonana*

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29

Aquatic sacropterygii animals

Lungfish
Coelacanth

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30

Heterostraci and arandapsida traits

No jaws
No paired fins
Dorsal and ventral bony shields of dermal bone*

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31

Galeaspida traits

Median dorsal opening*
Fin folds?

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32

Osteotraci traits

No jaws
Pectoral fins
Sensory fields*
Ossified neurocranium*
2 semicircular canals

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33

Palodermi

Jaws with bone that looks like teeth*
Shields with articulations*
Pelvic fins
3 semicircular canals

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