Fossil Friday 4/29/16: A white cockle


UF 208535, a valve of  Apiocardia n. sp. Photo © IVP FLMNH.

This week’s Fossil Friday post focuses on a white cockle of the genus Apiocardia. This bivalve specimen was collected from the Gatún Formation and is Late Miocene in age. This species was endemic to the Caribbean side of Panama.

To learn more about this species, visit the “Fossils of Panama” page on it here.


Fossil Friday 11/6/15: A Venus clam


UF 222942, a valve of the Venus clam Chionopsis tegulum. Photo © IVP FLMNH.

For this week’s Fossil Friday we have a Venus clam (family Veneridae) from the Gatún Formation, Chionopsis tegulum. This Venus clam can be found throughout the Early to Late Miocene (20 million years ago to 9 million years ago). It is only found on the Caribbean side of Panama and not on the Pacific side.

To find out more about this specimen, read the Fossils of Panama page on it here.


Fossil Friday 3/6/15: A jewel box clam


UF 220128, the right valve of the clam Chama berjadinensis. The two shiny impressions on the left and right sides of the inside of the valve are the adductor muscle scars. These muscles are used to pull the valves together and close the shell. (Photo © IVP FLMNH)

For this Fossil Friday, we have the right valve of a jewel box clam called Chama berjadinensis. This specimen is from the Gatún Formation of Panama and is Late Miocene in age. Clams are bivalve molluscs (Class Bivalvia, Phylum Mollusca) and are so named for the two valves that make up their shell. The outside of the valves of Chama berjadinensis can have irregular or even frilly growth lines radiating out from the umbo (usually the highest point on the valve, near the hinge line) that run parallel to the shell margin.

To find out more about this specimen, read the Fossils of Panama page on Chama berjadinensis from the Gatún Formation here.