Stiff Pen Shell (GTM Research Reserve Mollusc Guide) · iNaturalist

Pistolgrip (Buckhorn) Missouri Department of Conservation

Sachem (GTM Research Reserve Butterfly Guide) · iNaturalist

Entomoneis (GTM Research Reserve Plankton Guide) · iNaturalist

Stiff Pen Shell (Atrina rigida)

Stiff Pen Shell, ATRINA RIGIDA

Photos of Stiff Pen Shell (Atrina rigida) · iNaturalist

Stiff Pen Shell: Atrina rigida (Lightfoot, 1786)

Photos of Stiff Pen Shell (Atrina rigida) · iNaturalist

M-650 PEN SHELL, Atrina rigida or A. serrata - Gulf Specimen

Photos of Stiff Pen Shell (Atrina rigida) · iNaturalist

Entomoneis (GTM Research Reserve Plankton Guide) · iNaturalist