Achatella carleyi Trilobite Fossil With Ceratopsis chambersi Ostracod

Above is a picture of an Achatella carleyi (Meek,1872) trilobite fossil. Also an ostracod is at the top of the image that appears to be a Ceratopsis chambersi (Miller, 1874).  These animals existed in the Ordovician Period. It was found in the Clays Ferry Formation of Robertson County, Kentucky USA. Thanks to Kenny for the image.

Acidaspis Trilobite Fossil Fragments

 

Trilobite fossils found near Maysville, Mason County, Kentucky USA dates to the Ordovician Period. Images were taken under microscope and field of view is 1.5 cm. They appear to be fragments of an Acidaspis (Murchison, 1839) trilobite.

Thanks to Kenny for the image.

Flexicalymene granulosa Trilobite Fossil

Above is a picture of a  Flexicalymene granulosa (Foerste,1909) trilobite fossil. This animal existed in the Ordovician Period. It was found in the Clays Ferry Formation of Robertson County, Kentucky USA. Thanks to Kenny for the image.

Hoplolichoides conicotuberculatus Trilobite Fossil

This picture is of a Hoplolichoides conicotuberculatus (Nieszkowski, 1859) trilobite fossil. It existed during the Ordovician period. The fossil was found in St. Petersburg, Russia. Fossil was on display at the Natural History Museum Vienna (Naturhistorisches Museum Wien) on August 2024.

Aulacopleura koninckii Trilobite Fossil

This picture is of an Aulacopleura koninckii (Barrande, 1846) trilobite fossil. It existed during the Silurian period. The fossil was found in Lodĕnice, Tschechien, Czech Republic. Fossil was on display at the Natural History Museum Vienna (Naturhistorisches Museum Wien) on August 2024.

Trinucleus ornatus Trilobite Fossil

 

This picture is of a Trinucleus ornatus (von Sternberg, 1833) trilobite fossil. It existed during the Silurian period. The fossil was found in Beroun, Tschechien, Czech Republic. Fossil was on display at the Natural History Museum Vienna (Naturhistorisches Museum Wien) on August 2024.

This fossil reminds me of a trilobite found in the Ordovician Period Kope Formation of Kentucky, USA called  Cryptolithus tessellatus (Green, 1832).

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!

Dalmanites limurus Trilobite Fossil

This picture is of a Dalmanites limurus trilobite fossil. It existed during the Silurian period. The fossil was found in Monroe County, New York USA. Fossil was on display at the Natural History Museum Vienna (Naturhistorisches Museum Wien) on August 2024. The trilobite was probably found in the Rochester Shale.

Peanut Butter Trilobite

 

One day recently at lunch, I did not have much to eat. Looking through my desk I found a jar of reduced fat Jif peanut butter. So I ate some of that with a serrated plastic knife. I soon realized that the pattern the peanut was making on the knife was that of the thorax of trilobite. 

Compound Eye of Glyptambon verruscous Trilobite

 

Nice close up picture of the ventral view of Glyptambon verruscosus (Hall, 1854) trilobite compound eye fossil. Fossil was found in the Waldron Shale of Clark County, Indiana USA. It dates to the Silurian Period. Thanks to Kenny for the images.

Elrathia kingii Trilobite

 

My cousin Kenny just finished prepping this fossil using a dental tool and engraver to uncover mostly a whole trilobite. It appears to be an Elrathia kingii (Meek, 1870) trilobite. It was found in the Wheeler Formation of Delta, Utah. The fossil dates to the Cambrian Period.

Carl Brett Fossil Videos

Today's entry is to highlight a number of fossil YouTube videos featuring the University of Cincinnati geology professor Dr. Carlton Brett. These videos were created by Paleontological Research Institution (PRI) of Ithaca, New York, USA. This first video focuses on Devonian Period bivalves from central New York and in particular Actinopteria and Plethomytilus.

  

The 2nd video covers Devonian Period brachiopod fossils with a focus on Spinocyrtia and Tullypothyridina.

  

Dr. Brett continues his fossil exploration of a central New York site highlighting Devonian Period bryozoan fossils like the Leptotrypella.

 The fourth video covers Devonian Period trilobite fossils like the Phacops (Eldredgeops) rana.

  

The fifth video covers the rugose (horn) corals like the Heliophyllum halli.

 This last video shows tabulate coral finds like Favosites.

   

 

Trimerus delphinocephalus Trilobite Eye Fossil

This Trimerus delphinocephalus (Green, 1832) trilobite fossil was found this month. The first picture is a close up of its complex eye.

Fossil was found in the Waldron Shale of Clark County, Indiana, USA. It dates to about 419 million years ago which is the Silurian Period. Thanks to Kenny for the images.

 

Spathacalymene nasuta Fossil Trilobite

 

This trilobite fossil is identified as a Spathacalymene nasuta (Ulrich, 1879). It was found in the Osgood Formation of Ripley County, Indiana, USA. The fossil dates to the Silurian Period.

Ceraurus? Trilobite Fossil

 

A few weekends ago, I was able to attend a field trip to Napoleon, Indiana USA. While there, I found this partial trilobite fossil which might be a Ceraurus (Chierurus) niagarensis (Hall, 1870). It dates to the Silurian Period  (Telychian to Sheinwoodian stage) in age. The fossil I was looking for this trip was that of the trilobite Spathacalymene nasuta (Ulrich, 1879).

According to Dr. James Thomka, professor at SUNY Plattsburgh, it is "from the mudstone lithofacies of the Massie Formation (long known as the "upper Osgood shale"), which is renowned for its 'cystoid' fauna."

 

Isotelus Cephalon Fossil

Here is a picture of a recent find that is an Isotelus (Dekay, 1824) trilobite cephalon fossil next to  Zygospira (Hall, 1862) brachiopod fossil. Fossils were found at a roadcut near Frankfort, Kentucky, USA. The fossils date to the Ordovician Period.

Thanks to Kenny for image

Isotelus Pygidium Fossil

 

In this picture is an Isotelus (Dekay, 1824) trilobite pygidium fossil next to little ringed funnel shapes which are the fossilized remains of a worm called Cornulites (Schlotheim, 1820). The small brachiopods in the matrix are Zygospira (Hall, 1862) fossils. Fossil plate was found at a roadcut near Frankfort, Kentucky, USA. The fossils date to the Ordovician Period.

Thanks to Kenny for image.

Cheirarus dilatatus Trilobite Fossil

This post is of a trilobite cephalon fossil called Cheirarus dilatatus (Raymond, 1916). Fossil was found in the Waldron Shale of Clark County Indiana USA. It dates to the Silurian Period.

Fossil on display at Falls of the Ohio Interpretative Center Clarksville Indiana USA as of December 2022.

Lichas boltoni Fossil

 Here is an image of a Silurian Period of a Lichas boltoni (Bigsby, 1825) [it is now known by genus Arctinurus (Castelnau, 1843)].  This illustration was originally in an 1852 James Hall publication of a fossil found in the Rochester Shale of New York.

This image was scanned from plate 17 of Guide to the Geology and Paleontology of Niagara Falls and Vicinity by Amadeus W. Grabau April 1901.

Glyptambon verrucosus Trilobite Pygidium Fossil

 

The picture above is of a pygidium of a trilobite fossil called Glyptambon verrucosus (Hall, 1854).  Fossil found in the Waldron Shale of Clark County Indiana USA. It dates to the Silurian Period.

Fossil on display at Falls of the Ohio Interpretative Center Clarksville Indiana USA as of December 2022.