Brachiopods of the Waldron Shale

Rhynchotreta cuneata

This post includes pictures of 19 different species of brachiopods found in the Waldron Shale of Clark County, Indiana.  They existed in the Silurian Period.  The Atrypa or Stegerhynchus are the most common found.

Eospirifer eudora

Whitfieldella nitida

Eospirifer radiatus

Laptaena waldronensis

Meristina maria

Unicinulus stricklandi

Stegerhynchus sp.

Parmorthis waldronensis (Foerste)

Rhipidomella hybrida

Atrypa reticularis

Homoeospira evax

Uncinulus saffordi

Fardenia subplana

"Orthis" subnodosa

Dictyonella reticulata

Spirifer (Delthyris) crispus simplex

Protomegastrophia profunda

Sieberella roemeri?

Pseudoatrypa Brachiopod with Lophophore

In the past, pictures have been presented of the Orthospirifer and Athyris with exposed lophophores.  This image is one of the few with Pseudoatrypa fossil with ring like structure of the lophophore fossilized and exposed.  Devonian fossil was found in Jeffersonville Limestone of Clark County, Indiana.

Fossil of the Aran Isles

 

Vincent Coleman of Ireland recently sent me some pictures of a fossil he spotted in limestone on an Aran Islands beach (off the west coast of Ireland).  It appears to be an orthocone cephalopod fossil with the chambers and siphincle visible.  He noted it was appoximately 40 cm long.  Also his research shows the rock is probably dated to the Lower Carboniferous (approx. 330 million years ago).

This is a nice find especially for its size and the great constrast between matrix and fossil.  Who knows maybe Ireland's Galway coast can attract tourist the way the "Jurassic Coast" of southern England has for fossil hunters.

Ireland is a great place to visit and Aran Isles are known for their hand knitted wool sweaters.  Last two pictures are from my last trip there. The first picture are of some unidentified islands off Irelands southern coast and the last is a popular tourist destination, the Cliffs of Moher.