TF0104 Exogyra virgula

TF0104_HS.png
TF0104_sketch.png

Title

TF0104

Exogyra virgula

Subject

Age

Jurassic

Description

Species

virgula

Stratigraphic Range

Jurassic

Taxonomy

Phylum: Mollusca
Class: Bivalvia
Order: Ostreoida
Family: Gryphaeidae

Distinctive Features

Growth lines
Ribs
Umbo
Two valves

Preservation

Mineral replacement of shell

Advanced notes

A feature characteristic of the Gryphaeidae is two asymmetric valves. The upper valve (the right valve in development) is flat, whilst the lower (left) valve is curved.

Citation

“TF0104
Exogyra virgula,” 1A Collections, accessed April 9, 2024, https://wserv3.esc.cam.ac.uk/p1acollections/items/show/89.