Star sand is a biogenic "sand" made of the star-shaped exoskeletons of tiny, single-celled sea creatures belonging to the Foraminifera group. This sample is from Ishigaki Island in Okinawa, Japan. This type of sand can only be found on a...

Geisenoceras is an extinct cephalopod, similar to a squid with a long, pointed shell that lived during the Devonian period around 400 million years ago. The lighter areas were cavities in its shell that it used for bouyancy and propusion...

This tooth fossil once belonged to a prehistoric shark called a crow shark that lived around the world during the Cretaceous period 70–100 million years ago. The significance of the fossils of this species’ is not so much what has been found but where they’ve...

Almost all cephalopods- the tentacled class of marine mollusks that include the octopus, squid, and cuttlefish- have the ability to eject dark ink from their body as a method of escaping predators. The melanin-based ink is stored in an ink...

This spiral-shaped fossil is a Goniatite from the Devonian era and is 251 to 390 million years old. These cephalopods lived in shallow seas in tropical to sub-tropical climates. Their spiraled shell had internal compartments which would have been filled...

This tooth is a fossil of an extinct shark species, Striatolamia macrota, from the Eocene era approximately 54 million years ago. This shark could grow to a length of about 3.5 meters (11.5 ft) and its teeth were notably big...

One of our oldest fossils, crinoids have lived in oceans since at least the Ordovician Era (485 million years ago). These echinoderms flourished in the Paleozoic Era, covering the ocean floor with their feathery appendages that would open up like...

This fossil is a 54 million year old gastropod, also known as a snail or slug. The family of Gastropods make up one of the most diverse collections of species, second only to insects. It is estimated that there are...

Shark fossils of any body part other than teeth are very rare. Instead of bone, shark  skeletons are made of cartilage, the same material that forms the structure of your nose and ears. Cartilage is typically soft and does not easily...

A handpicked collection of 10 unique fossils up to 500 million years old—a $120+ value—including prehistoric teeth and complete sea creatures.Free US shipping on this item.

These fossils are fragments of teeth plates of prehistoric stingrays. Stingrays have many rows of these jagged crushing plates on the upper and lower jaw. Rows of these plates can cover the entire interior of their mouth. They feed by...

Ammonites are an extinct type of cephalopod that lived in Earth’s oceans for over 300 million years.   While they were alive, the ammonoid body dangled out of the large opening of the shell. Ammonites were free swimmers and floaters. They...