A global citizen science platform
to discover, share and identify wildlife

Join Project Noah!

Alectryonia fossil

Lopha.sp / Alectryonia.sp


"Lopha species have a thick, strongly ribbed shell with unequal valves. The margins of the valves have a characteristic zig-zag pattern. The lower valve shows finger-like outgrowths, by which the molluscs adhere to the substrate. These molluscs are stationary epifaunal suspension feeders, as they feed filtering sea water to extract the nutrients."


"Lopha is a genus of marine bivalve molluscs in the family Ostreidae. The genus Lopha is present from the Triassic period in the LowerNorian age (216.5 ± 2.0 – 203.6 ± 1.5 Mya) to the recent age." Reference-http://en.wikipedia.org/wiki/Alectryonia


This amazing Alectryonia spotting is from Tiruchirapalli,Tamil Nadu, India.

Species ID Suggestions

Sign in to suggest organism ID


DaneCole 6 years ago

Gorgeous fossils! Very nice collection, thanks for sharing Namitha.

namitha 7 years ago

Hi Isabella, it is a molluscan fossil from the cretaceous period [ It is approx 65million years old]

Isabela 7 years ago

Very interesting photos. Are they fossils or have you found the valves in the sea?

namitha 7 years ago

Thank you megan1. This is one of my precious find.

megan1 7 years ago

This is so cool!

Spotted by

Tamil Nadu, India

Lat: 11.41, Long: 76.70

Spotted on Sep 21, 2012
Submitted on Sep 21, 2012

Related Spottings

Giant Black Coral Whip

Nearby Spottings

Ornamental african banana Gaur Spotting Spotting