Indiana University Press Spring SALE!

Thanks to the blog Love in the Time of Chasmosaurs for the notice about Indiana University Press spring/summer book sale with some books marked down 80% with free U.S. ground shipping for orders of $25 or more.  Enter code WWEZXX at checkout to receive discounts, quantities limited and sale ends 06/30/2010.

I like Echinoderm Paleobiology for $36 and Oceans of Kansas for $24.  If you like dinosaurs, they have quite a few books on sale.

Books of interest Limestone Lives - Voices from the Indiana Stone Belt by Katherine Ferrucci at $21 and This Place We Call Home - A History of Clark County, Indiana by Carl E. Kramer at $21.

Wasp Nest Coral

Devonian Period wasp nest coral found in the North Vernon Limestone of Clark County, Indiana.

It does resemble the wasp nest as shown by this actual wasp nest picture from April 2008.

Photo by Joaquim Alves Gaspar, Lisboa, Portugal

Found on Wikipedia using GNU License 1.2

Silurian Crinoid Arm/Stem? - Myelodactylus convolutus

This appears to be a Myelodactylus convolutus arm/stem found in Clark County, Indiana, USA in the Waldron Shale.  The fossil is from the Middle Silurian Period (around 425 to 419 million years ago).  High hopes that sand blasting will reveal more details of this fossil including the pinnules or feather looking part of the arm.

UPDATE (2020/02/16): Original post had this as unknown, but thanks to Kenny and ID has been found. Also this specimen was cleaned some more, see this posting https://louisvillefossils.blogspot.com/2010/06/silurian-crinoid-arm.html

Learn more about this unique crinoid from this article Myelodactylid crinoids from the Silurian of the British Isles by Stephen K Donovan and George D Sevastopulo from 1989 Palaeontology Volume 32 pages 689-710 at https://www.biodiversitylibrary.org/part/173971#/summary Plate 81 shows clear examples of what the calyx looked like though it might be somewhat different in the species of this fossil.