Melonechinus Sea Urchin Fossil

This fossil was seen at the New Harmony Indiana USA Working Men's Institute Museum & Library in June 2020. It was identified as a Melonechinus sp. (Meek & Worthen, 1861, p. 396) from St. Louis Limestone. The fossil dates to Mississippian Period (340-330 million years ago) in the Meramecian series. Limestone named by George Engelmann in Remarks on the St. Louis Limestone: American Journal of Science, series 2, volume 3, pages 119-120 (published 1847). Specimen accession number WMI 310.4.

There appears to be a second echinoid fossil on display as well but was not labeled. This one was more intact. The case label read "Mr. James Sampson, 1806-1890, was a saddler, a storekeeper and McClure agent. When he retired in 1858, he followed his fancy for collecting things, natural history mainly along the Wabash River and cut off river." The case is full of nice fossils but almost none of them are labeled. The fossil looked to be about the size of a grapefruit.

Crane Fly Fossil

This image shows a crane fly insect fossil found in the Florissant Formation of Teller County, Colorado, USA. The genus might be a Tipula. It dates to the Eocene Epoch of the Paleogene Period. Thanks to Kenny for the image.

Indonesian Bivalve Fossil

Recently, my cousin returned from a trip where he acquired some bivalve fossils at a Colorado rock shop. He was told they were from Indonesia. After doing some research on the Internet of other dealers selling fossils like this, the name being used is either Paphia sp. or Striarca cheribonensis. The locality might be either Solo River or Sangrian Done, Jawa Tengah, Java, Indonesia. Fossil dates to the Pliocene Epoch.