Saturday, August 24, 2019

Perisphinctes Ammonite Fossil





Appears to be a Perisphinctes virguloides ammonite fossil found in Madagascar. Fossil is from the Jurassic Period (201-145 million years ago). Specimen was bought at the bookshop at Museo Civico di Storia Naturale in Milano, Italy.



Wednesday, July 24, 2019

Prasopora Bryozoan Fossil with Calcite Crystals

This specimen is a mix between a fossil and mineral (calcite crystals). It appears to be Prasopora bryozoan fossil. The fossil dates to the Ordovician Period. It was found in Ripley County, Indiana, USA.

Thanks to Kenny for image.

Monday, July 22, 2019

Saivodus ctenacanthus Shark Tooth Fossil


This appears to be a Saivodus ctenacanthus shark tooth (cladodont) fossil. It was found in Crawford County, Indiana USA. Fossil dates to the Mississippian Period.

Thanks to Kenny for image.

Sunday, July 21, 2019

Unidentified Coral Fossil from Harrison County Indiana USA


A reader of this blog, Christina sent me a image of fossil she found in Harrison County, Indiana, USA. I think it is a Syringopora sp. coral fossil. All the fossils I have seen from Harrison County date to the Mississippian Period.

It is quite a nice find, especially if more fossil detail can be seen once the matrix has been removed.

UPDATE: Mike Huggins in the comments section left a link to a similar fossil he found.  It is a "Upper Mississippian Syringopora in limestone of the (Meramecian/Visean) Hillsdale Limestone of southern West Virginia" https://www.flickr.com/photos/79475348@N03/14012502204/in/album-72157644301124792/

Thursday, July 11, 2019

Experiments in Fossil Cleaning with Power Washer

Earlier in the year, I was cleaning with a power washer and thought, "what if I tried this on some of soil stained fossils?". Well, I picked out a few pieces: crinoid plates that had been underwater at Lake Cumberland for a long time and coral and brachiopod fossils from Devonian Period limestones around Louisville.

This first fossil picture shows one of the largest horn corals to ever exist called Siphonophrentis elongata. It is found in the Jeffersonville Limestone usually in pieces in the soil. The fossil shown is stained a reddish-brown. The other two plates are broken up crinoid stem plates with one showing pieces of a calyx. They were found at Lake Cumberland, Kentucky. They appear to have layers of lake mud on them that is fused to the silica fossils. I like these fossils in that they have bluish look to them.
The next two show after cleaning. The crinoid stem piece did the best. I am not sure there was much change on the crinoid plates.



This next picture is of a coral fossil and brachiopod plate. The second image shows the cleaned fossils. The coral cleaned quite nicely.



Wednesday, July 10, 2019

Unknown Fish Fossil

A while back I was visiting my cousin Kenny and he had this fossil under the microscope. The field of view might be 4mm. It has a blue glossy sheen to it. It appears to be a fragment of a fish fossil. The fossil was found in Indian Springs Formation(?) in Crawford County, Indiana, USA. Date on this piece is Mississippian Period.

Tuesday, July 9, 2019

Stensioella heintzi Fish Cast Fossil


This fish fossil cast is a Stensioella heintzi (named for Erik Stensiö). It was collected Hunsrück, Budenbach, Germany. This fish fossil has only been found in Germany so far. Fossil dates to about 395 million years ago (Early Devonian Period).



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

Monday, July 8, 2019

Rhabdoderma elegans Fish Fossil


This fish fossil is a Rhabdoderma elegans ("striated skin"). It was collected Linton, Ohio, USA. This fish was a common freshwater fish in its day. Fossil dates to about 325 million years ago (Middle Carboniferous Period).

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

Sunday, July 7, 2019

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.

Saturday, July 6, 2019

Diplurus newarki Coelacanth Fossil


This fish fossil is a Diplurus newarki. It was collected by G.L. Jepsen in 1946 at Firestone Library excavation in Princeton, New Jersey, USA. This fish lived in fresh water lakes of what would be eastern North America today. It is related larger coelacanths (e.g. Axelrodichthys) found in Cretaceous Period. Fossil dates about 210 million years ago (Late Triassic Period).

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


Model of what fish might of looked like. Created by Louis Ferraglio (in 1953?).

Tuesday, July 2, 2019

Gemuendina stuertzi Fish Skeleton Fossil (cast)


This cast of a fish fossil is a Gemuendina stuertzi. It was found in Hunsrück, Budenbach, Germany. Fossil dates about 395 million years ago (Early Devonian Period).

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

Model of what fish might of looked like. Created by Louis Ferraglio (in 1953?).


Monday, July 1, 2019

Asterosteus stenocephalus Fish Head Shield Fossil (cast)


This Middle Devonian Period fossil cast is of an Asterosteus stenocephalus fish. The fossil was found in Delaware, Ohio, USA. Its name means "star bone".

As of 2018, this head shield cast was on display at American Museum of Natural History, New York City, USA.

Sunday, June 30, 2019

Pterichthyodes oblongus Fish Fossil


This fossil is of a early Devonian Period fish Pterichthyodes oblongus. Discovered in 1844 and its name means "winged-fish form".
The fossil on display (2018) at American Museum of Natural History, New York City, USA. Fossil was found in Lethen, Nairnshire, Scotland.


Model of what fish might of looked like. Created by Louis Ferraglio (in 1953?).


Friday, May 31, 2019

Coiled Cephalopod Fossil


Finding coiled cephalopod fossils in the area around Louisville is quite rare.  This cephalopod fossil found in Clark County, Indiana, USA. I have posted an image of it before in 2013 but looking at images on my cell phone from 2018, I decided to post some fresher images from different angles.


It was on display at the Indiana University Southeast geology department as of December 2018. It was donated to them by John T. Shelton.


Thursday, May 30, 2019

Chain Coral Fossil


Images of a Silurian Period chain coral. The fossil was found in Jefferson County Kentucky USA. Fossil was found in the Louisville Limestone layer.

Sunday, April 14, 2019

Kazakhstania mangeri Ammonite Fossil




These microscope images show a fossil that appears to be a Kazakhstania mangeri ammonite. It dates to the Mississippian Period. It was found in the Cave Run Fauna of Rowan County, Kentucky USA.

Thanks to Kenny for images.

Saturday, March 9, 2019

Decaschisma Silurian Period Blastoid Fossil

Today's post is a very rare find. A Silurian Period blastoid fossil found in the Waldron Shale. It was found in Clark County Indiana USA. The fossil appears to be a Decaschisma pentalobus. It is about 7 mm tall. Thanks to Kenny for the image and yes you were right you would one day find a blastoid in the Waldron Shale. :)

Sunday, March 3, 2019

Lichenalia cocentrica Bryozoan Fossil


These image appear to be the Lichenalia cocentrica bryozoan fossil. They existed in the Silurian Period. The fossils were found in the Waldron Shale of Clark County, Indiana USA. Thanks to Kenny for the images.

Tuesday, February 26, 2019

Insect with Compound Eye Fossil


This image shows an insect fossil with compound eyes. The fossil was found in the Florissant Formation of Teller County, Colorado, USA. It dates to the Eocene Epoch (56-33.9 million years ago) of the Paleogene Period (66-23 million years ago). Thanks to Kenny for this microscope image. Field of view (FOV) on image is approximately 2 mm.

The second image is a similar fossil but FOV is 1mm.


Monday, February 25, 2019

Unidentified Flower Fossil


This image shows a unidentified flower fossil found in the Florissant Formation of Teller County, Colorado, USA. It dates to the Eocene Epoch of the Paleogene Period. Thanks to Kenny for the microscope image. Field of view on image is 1 mm.

Sunday, February 24, 2019

Endothyra Foraminifera Fossils Revisited


In 2010, I posted some images of this type of microfossils found in Spergen Hill, Indiana, USA. This place is a type locality where this particular species was found and named in the literature first. Since my cousin Kenny recently acquired a new Amscope microscope I asked him to image some of these fossils for this posting.

These images are of foraminifera fossils from the Salem Limestone of Washington County, Indiana, USA. These creatures are called Globoendothyra "Endothyra" baileyi and existed 360-325 million years ago (Mississippian Period).

A very good write up on this particular fossil can be found on the Fossil Forum site written by user dshamilla. http://www.thefossilforum.com/index.php?/topic/54262-revisiting-spergen-hill-indiana-and-some-of-its-mississippian-micro-fossils/

Thanks to Kenny for the images.

Tuesday, February 19, 2019

Drone Ant Fossil - Paleogene Period


This image shows what appears to be a drone ant fossil (see the wing). The fossil was found in the Florissant Formation of Teller County, Colorado, USA. It dates to the Eocene Epoch (56-33.9 million years ago) of the Paleogene Period (66-23 million years ago). Thanks to Kenny for this microscope image.

Sunday, February 17, 2019

Ant Fossil From Florissant Formation


This image shows what appears to be an ant fossil. The fossil was found in the Florissant Formation of Teller County, Colorado, USA. It dates to the Eocene Epoch (56-33.9 million years ago) of the Paleogene Period (66-23 million years ago). Thanks to Kenny for this microscope image. Field of view on image is approximately 2 mm.

Saturday, February 16, 2019

Unidentified Plant Seed Fossil - Eocene


This image shows a plant seed fossil found in the Florissant Formation of Teller County, Colorado, USA. It dates to the Eocene Epoch of the Paleogene Period. Thanks to Kenny for the microscope image. Field of view on image is 4 mm.

Monday, February 11, 2019

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.