14 April 2015

Compare and contrast: Two Chesapectens

Posted by Callan Bentley

Two new GIGAmacro images of fossil scallops from Virginia’s Coastal Plain –

Chesapecten nefrens:

Chesapecten jeffersonius:

My vision is to get the opposite side of each of these samples as well as a half-dozen other species in this genus, perhaps even multiple individual specimens of each species, to allow students to do a lab where they plot morphological changes over geologic time as an example of what the fossil record shows about evolution.

(Credit for making these images goes to my student Robin Rohrback, as usual.)