Okay so it’s shark time and ktsaurusr3x's birthday and well a whole bunch of party-hatted chondrichthians happened
You might think the eagle ray is the only one excited to be there but in fact he’s terrified
Paleontologists found this sweet whorl of teeth called a Helicoprion, but really didn’t know how it might have been situated in a fish’s mouth.
There were many theories postulated about how the teeth fit in the animal’s mouth (fourth image). When another specimen was found, it was determined that the owner of this strange jaw (not a shark, but a ratfish) had no upper teeth at all.
Ladies and gentlemen, the most metal fish.
(via Laelaps/National Geographic) Art by Ray Troll.
Snowflake Moray (Echidna nebulosa)
Also known as the clouded moray, the snowflake moray is
surprisinglya species of moray eel (Muraenidae) which is widespread throughout the Indo-Pacific region, from the eastern coast of Africa thorough Micronesia including the Red Sea and Hawaii. It also occurs in the eastern Central Pacific, from southern Baja California, Mexico, and from Costa Rica to northern Colombia. Like most morays, snowflake morays are carnivorous and will feed on a variety of fish and crustaceans.
THE FADE TO BLACK OH MY GOD I LITERALLY CAN’T BREATHE RIGHT NOW
A short-tailed form of the popular sail-backed repto-mammal Dimetrodon.
The soft tissue and integument on this depiction are divine. It really sells this strange creature as a far-flung relative of mammals rather than some big lizard with a sail.