Phylogeny and diversity - Part 3 Flashcards
1
Q
What are characteristics of ostracoderms. What major superclass do they fall under?
A
Agnathans. Major characters: - now jaw - no paired fins - first true bone - small filter feeders - swam like tadpoles
2
Q
Give basic characters of the hagfish. What superclass does it belong to?
A
Agnathans. No jaw not a vertebrate no paired fins no vertebral column scavenger 6 hearts class mixini
3
Q
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?
A
Sea lamprey Agnathans Ammoecete Basic characters: sucker mouth no jaw true cartilaginous braincase vertebrae
4
Q
give basic characters of elasmobranchs.
A
Gnathostomes sharks and rays cartilage skeleton spiral valve intestine claspers spiracle
5
Q
What are the two clades of shark?
A
Great white
dogfish
6
Q
What is the other subclass of condricthyes?
A
Chimera (holocephali)
additional clasper on head
no scales
have a gill cover
7
Q
Give some common names for elopomorphs.
A
American Eel
8
Q
Give a common name for a clupeimorph
A
Shad
9
Q
Give a common name for an ostariphysi
A
Silver shiner
10
Q
Which class can be electric from teh teleostii?
A
Ostariphysi.
11
Q
Give a common name for a euteleost.
A
Brook trout
12
Q
Give a common name for a osteoglossomorpha.
A
mooneye
