Phylogeny and diversity - Part 3 Flashcards Preview

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Flashcards in Phylogeny and diversity - Part 3 Deck (12):
1

What are characteristics of ostracoderms. What major superclass do they fall under?

Agnathans.
Major characters:
- now jaw
- no paired fins
- first true bone
- small filter feeders
- swam like tadpoles

2

Give basic characters of the hagfish. What superclass does it belong to?

Agnathans.
No jaw
not a vertebrate
no paired fins
no vertebral column
scavenger
6 hearts
class mixini

3

Give a common name for a lamprey, what superclass is it part of?
What is the name for its larval form?
What are basic characters?

Sea lamprey
Agnathans
Ammoecete
Basic characters:
sucker mouth
no jaw
true cartilaginous braincase
vertebrae

4

give basic characters of elasmobranchs.

Gnathostomes
sharks and rays
cartilage skeleton
spiral valve intestine
claspers
spiracle

5

What are the two clades of shark?

Great white
dogfish

6

What is the other subclass of condricthyes?

Chimera (holocephali)
additional clasper on head
no scales
have a gill cover

7

Give some common names for elopomorphs.

American Eel

8

Give a common name for a clupeimorph

Shad

9

Give a common name for an ostariphysi

Silver shiner

10

Which class can be electric from teh teleostii?

Ostariphysi.

11

Give a common name for a euteleost.

Brook trout

12

Give a common name for a osteoglossomorpha.

mooneye