Amplexus Pyrite Horn Coral

This fossil is a pyritized horn coral. The identification appears to be Amplexus fragilis (White & St. John) of the Coral Ridge fauna, New Providence Shale of Jefferson County, Kentucky. Time period for this specimen is Middle Mississippian (Osagean). It was found by a local geology professor Barbara Conkin years ago.

Cladochonus beecheri Coral Fossil on Crinoid

These pictures are of what appears to be a Cladochonus beecheri (Grabau, 1899 aka Monilopora) coral fossil that had grown on a crinoid column. Fossil found in the New Providence Formation of Clark County, Indiana USA. It dates to the Mississippian Period. Thanks to Kenny for the images.

Worm Tube Fossil

These pictures are of a worm tube fossil. Fossil found in the New Providence Formation of Clark County, Indiana USA. It dates to the Mississippian Period. Thanks to Kenny for the images.

 

Cladochonus Coral Fossil on Crinoid Column

 

 

These pictures are of a Cladochonus crassus? (McCoy, 1847) coral fossil on crinoid column. Specimen is about 2 cm in length. Fossil found in the New Providence Formation of Clark County, Indiana USA. It dates to the Mississippian Period. Thanks to Kenny for the images.

Crinoid Fossil Stem Cross Section

 

Let us start off the new year with a picture of a unique looking crinoid stem cross section. It was found in the New Providence Formation of the Borden Group of Scott County Indiana USA. The fossil dates to the Mississippian Period.

Thanks to Kenny for the image.

Spiny Unidentified Brachiopod Fossil

Note, I originally posted this as a snail fossil but now it is thought to be some sort of brachiopod. Spiny Platyceras gastropod unidentified brachiopod fossil found in Scott County, Indiana USA. Fossils discovered in New Providence Formation and it dates to Mississippian Period.

Thanks to Kenny for the image.

Cladochonus Coral Fossil on Crinoid Stems

Cladochonus coral fossil on crinoid stems found in Scott County, Indiana USA. Fossils found in New Providence Formation and it dates to Mississippian Period.

Thanks to Kenny for the images.

Crinoid Holdfast on Dead Crinoid Stem

This pictures show a crinoid holdfast growing on the side of a fallen crinoid stem. The fossils were found in the New Providence Formation of Scott County, Indiana USA. The fossils date to the Mississippian Period. Thanks to Kenny for the images.

Cladochonus Coral Overgrown by Crinoid

UPDATE (Jan 2023): This coral growth on the crinoid stem appears to be Cladochonus crassus (McCoy, 1847).

The image is of a tabulate coral Cladochonus beecheri? (Grabau, 1899 aka Monilopora) that grew on a crinoid column. The crinoid responded by growing over the coral leaving just the corallite openings. Some of the images show a root like structure that might be a crinoid holdfast or some sort of bryozoan.

Fossil found in the New Providence formation in Clark County, Indiana, USA. These creatures existed in the Mississippian Period.

Thanks to Kenny for the images and Bill for the identification.

Parasites on Crinoid Fossil?

These images are quite interesting in that they show possible parasites or byrozoans on a crinoid stem fossil. These fossil was found in Scott County Indiana in the New Providence Formation. It dates to the Mississippian Period.

These might be something like the Wooster College paleontologists found on Jurassic crinoid stems: http://woostergeologists.scotblogs.wooster.edu/2014/11/14/woosters-fossils-of-the-week-a-new-crinoid-species-from-the-middle-jurassic-of-southern-israel-with-a-bonus-parasitic-infection/

Thanks to Kenny for images.

Unidentified Crinoid Holdfast Fossil

This image is of an unidentified crinoid holdfast attached to larger crinoid stem fossil. It was found in the New Providence Formation (Keokuk) of Scott County Indiana USA. This creature existed in the Mississippian Period. Thanks to Kenny for this image.

Unidentified Gastropod Fossil

This image is of an unidentified gastropod fossil. It was found in the New Providence Formation (Keokuk) of Scott County Indiana USA. This creature existed in the Mississippian Period. Thanks to Kenny for this image.

Cladoconchus Coral Fossil

This image is of a Cladoconchus sp. coral on an unidentified crinoid fossil. It was found in the New Providence Formation (Keokuk) of Scott County Indiana USA. These creatures existed in the Mississippian Period. Thanks to Kenny for this image.

Scytalocrinus disparilis Crinoid Calyx Fossil

UPDATE: This fossil was originally identified as an Aphelecrinus bayensis.

The fossil pictured appears to be a Scytalocrinus disparilis (MIller and Gurley) crinoid calyx. It was found in the New Providence Formation of Clark County Indiana USA. This crinoid is known from Crawfordsville and Muldraugh Member of the Borden Formation in Kentucky. The creature existed in the Mississippian Period. The matrix had to be coated with a sealer since it was so soft.

Thanks to Kenny for the image.

Punctospirifer? Brachiopod Fossil

These pictures are what appear to be Punctospirifer sp. brachiopod fossil. It was found in the New Providence Formation of Clark County Indiana USA. It dates to the Mississiippian Period.

Thanks to Kenny for the images.

Microfossil Crinoid Pieces from Clark County Indiana

My cousin recently sent me some images of crinoid fossils he has been finding in the New Providence Formation of Clark County, Indiana, USA. The fossils date to the Mississippian Period (Carboniferous). All pictures were taken using a microscope and have an approximate field of view of 2 mm.

Thanks to Kenny for the images.