[Xule (OP)]

i've been searching the internet for detailed diagrams of the structures of bats' wings and sharks' skulls [including the jaw, there are millions without]
i can find pictures and such, but nothing is labelled and there is nothing that goes through  the nature of movement in these body parts.

also, i heard that the length of an animals leg bones can indicate how fast or slow it is. is this ture & can someone explain it to me? []

[paul.fr]

This is a link to a pdf file entitled "Wing Structure and the Aerodynamic Basis of Flight in Bats"

it has detailed wing structure diagram and plenty of text. http://www.noctilio.com/pdfs/SwartzAIAA2007.pdf

[paul.fr]

Not much detail in this picture, but it's nice.