Alpena Michigan Microfossils

 

My cousin screened through a lot of micro material I brought back from Alpena Michigan USA in October 2021. It was found in the Potter Farm Formation and dates to Middle Devonian Period (Erian Age). 

The brachiopod fossil in boxes 110 & 117, 76-77, and another in 109 appear to be a Strophondonta crassa (Imbrie, 1959).

Rectangles 107, 108, and 115 appear to be Aulopora coral fossils with some that had grown on a branching bryozoan.

Cornulites appear to be in boxes 60 and 61.

A blastoid in cells 62, 63 & 66 could be Heteroschisma subtruncatum.

Cell 22 is a fish tooth fossil.

Fossil in rectangle 69 is some sort of bone fossil.

Thanks to Kenny for image and preparing all those fossils. Very nice work!

Orthacanthus Fish Spine Fossil

This fish fossil is an Orthacanthus sp. It was collected Texas, USA. This fossil is a pectoral girdle "straight spine". Fossil dates to about 280 million years ago (Early Permian Period).

The fossil on display (2018) at American Museum of Natural History, New York City, USA.

Aran Island Microscopic Sea Creature Remains

 Continuing with yesterday's posting about microscopic sea creature remains found near Killagoola, Aran Islands, Ireland. The first image is of an unidentified echinoid spine and the 2nd image is an unidentified yet colorful gastropod. Thanks to Kenny for the images. Neither specimen appears to be a fossil yet.

Productus wortheni Brachiopod Fossil with Spines!

Wow, another special image similar to a posting 2 days ago. The Mississippian Period brachiopod fossil Productus wortheni found in the Knobstone Formation of Clark County, Indiana, USA shown in image. The special item about this image is the spines preserved in the sandstone matrix. They are so delicate yet survived the fossilization process and here they are hundreds of millions a years later.

Kenny, thanks for the image of this very sweet find.

Gyracanthus formosus Fish Spine

The spine fossil of a Gyracanthus formosus fish (front pectoral fin). Not much is known about this fish as all that is found of remains are spines. Fossil was found Newsham Colliery of Northumberland England. This fish existed in the Middle Carboniferous Period (325 million years ago).

Fossil on display at American Museum of Natural History in New York City USA as of July 2018.

Reticulariina Brachiopod Fossil Spines

These images are of brachiopod fossils and close up images under the microscope of some of their spines. The brachiopod fossils are called Reticulariina spinosa and date to the Mississippian Period. They were found in the Glen Dean Member of Grayson County, Kentucky, USA.

Thanks to Kenny for images.

Paracidaris florigemma Spine Fossils

This image of two echinoid spines identified as Paracidaris florigemma (Phillips). They were found in the Corallian Beds Coral Rag Calne Wilts. England. The fossils date to the Mesozoic Era, Jurassic Period, Upper/Late Oxfordian stage.

Fossils were on display at the British Natural History Museum in London, England on August 2016.

Platyceras and Acanthocrinus Fossilized Spines

This piece of Devonian Period limestone is from the Jeffersonville layer of Clark County, Indiana. It is unique in that it contains spines from two types of creatures: snail and crinoid. The solid spines are from the Acanthocrinus or Gilbertocrinus while the hollow ones might be from the Platyceras snail.

Thanks to Kenny for the picture.