Bones are made of calcium. This is the same for all bones found in mammals, birds, reptiles, amphibians and fish. The 'softer tissue structures' found in other fishes is cartilage. These are the rays, sharks and the like.
it looks like hard rocks together
Their 'skin' is made of a layer of bony plates (not really skin then). These bony plates are really just modified scales. They cannot be shed.
Scaly skin, their scales are made out of what are fingernails are made out of. i hope this helps :)
posterior superior iliac spineposterior superior iliac spine.
used for breathing. they stickout through bony spines on the starfish.
Osseous types of connective tissue forms the bony skeleton. Adipose is the types of connective tissues composes dermis of skin.
Yes. Seahorses are bony fish, they do not have scales, rather a thin skin stretched over a series of bony plates arranged in rings throughout their body.
The skin overlying bony prominences is the most prone to developing ulceration.
* im not sure but i think the answer is bony spines protruding from the body with skin covering them
they have bony plates as skin and can camaflage into plants
pterodactyl?
bursae