Eevolution of limbs Flashcards
1
Q
when did we move to land
A
between devonian and carboniferous
2
Q
devonian
A
400 my ago, age of fishes
3
Q
why did we move to land
A
scarce food and reproductive opportunities in water, competition was less on land
4
Q
choanate fish
A
has palate for breathing
5
Q
eusthenopteron
A
breathes, upper arm homology, no digits
6
Q
acanthostega
A
first known tetrapod with digits
7
Q
tiktaalik
A
has wrist bones but no digits (the one from the meme also)
8
Q
how are lepidotrichia and autopod homologous?
A
same set of hox genes codes for them
9
Q
tulerpeton
A
early tetrapod with digits
10
Q
ichthyostega
A
early tetrapod with digits
11
Q
time order of fossils
A
eusthenopteron, tiktaalik, acanthostega, ichthyostega, tulerpeton
