specific synapomorphies/where they arrose Flashcards

1
Q

synapomorphies for chordates

A

notochord, dorsal hollow nerve chord, notochord, pharyngeal slis, post-anal tail, endostyle

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2
Q

notochord

A

chordates

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3
Q

dorsal hollow nerve chord

A

chordates

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4
Q

pharyngeal slits

A

chordates

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5
Q

endostyle

A

chordates

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6
Q

post-anal tail

A

chordates

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7
Q

deuterostome synapomorphies

A

deuterostome development

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8
Q

vertebrate synapomorphies

A

vertebral column, muscular pharyngeal pump, cranium

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9
Q

vertebral column

A

vertebrates

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10
Q

muscular pharyngeal pump

A

vertebrates

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11
Q

cranium

A

vertebrates

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12
Q

gnathostomata synapomorphies

A

bone, jaws, paired pectoral and pelvic fins

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13
Q

what did myxinoidea lose

A

vertebrae

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14
Q

what did chondrichthyes lose

A

skeletal bone

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15
Q

teleostomi synapomorphy

A

gas bladder

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16
Q

gas bladder

A

teleostomi

17
Q

sarcopterygii and tetrapod synapomorphy

A

fleshy fins

18
Q

fleshy fins

A

sarcopterygii and tetrapoda

19
Q

tetrapoda synapomorphy

A

legs and digits

20
Q

legs + digits

A

tetrapoda

21
Q

what type of fins to actinopterygii have?

A

ray fins

22
Q

amniota synapomorphies

A

amnion, chorion, allantois

23
Q

amphibian characters (general, not necessarily synapomorphies)

A

thin scaleless skin covered in mucus for cutaneous gas exchange + paired lungs also for gas exchange

larval stage amphibous trans to partally or full land

24
Q

mammalia characters

A

endothermy (evolved convergently w/ aves), hair, mammary glands

25
Q

amnion

A

amniota

26
Q

chorion

A

amniota

27
Q

allantois

A

amniota

28
Q

endothermy

A

aves and mammalia (evolved convergently)

29
Q

hair

A

mammalia

30
Q

mammary glands

A

mammalia

31
Q

testudinata synapomorphy + loss of ___

A

caraplace and plastron (bony shell)

loss of teeth

32
Q

lepidosauria synapomorphy

A

hemipenes

33
Q

metatheria general characters

A

mammals that give birth to free-living young very early in their development, incubated and nursed in a pouch

34
Q

eutharia general characters

A

give birth to free-living young later in their development

35
Q

caraplace and plastron

A

testudinata

36
Q

hemipenes

A

lepidosauria

37
Q

chondrichthyes synapomorphy

A

claspers (intromittent organs for sperm transfer in males and intersex chondich)

fin dicks