Sunday, February 28, 2010

Leptaena Brachiopod

UPDATE: I originally labeled this Megastrophia concava but Shamalama determined it was probably a Leptaena brachiopod instead.  After some more research, I agree.

Leptaena brachiopod found in the Jeffersonville Limestone of Clark County, Indiana.  This brachiopod existed in the Devonian Period.

Thanks to Mary Ann for letting me photograph it.



 

 

2 comments:

Shamalama said...

To me It looks more like a Leptaena rather than Megastrophia. From the pictures it looks like a brachial valve and the underside shows pronounced concentric growth lines. I am also comparing it to figures 23,24 on page 235 in "Fossils of Ohio".

Fossil Detective said...

I believe you are corect, this fossil is mislabeled. After some research the Leptaena rhomboidalis has been found in the Devonian Period limestone of Clark County, Indiana.

I saw that in picture of the Leptaena in the Fossils of Ohio book on page 233, figure 6 but since it was labeled Silurian Period I did not consider it.

Thanks.