Leptolepis dubius Fish Fossil

This fossil was displayed on August 2022, at the Harvard Museum of Natural History in Cambridge, Massachusetts, USA. This fish fossil is called Leptolepis dubius  (Blainville, 1818).  Fish lived during the Jurassic Period (Kimmeridgian Stage). Fossil was found Solnhofen Limestone Formation of Bavaria, Germany. Catalog number is MCZ7090.

https://mczbase.mcz.harvard.edu/guid/MCZ:VP:VPF-7090

Myelodactylus? Crinoid Fossil

 

I found this rock in a pile of river rock in Louisville, Kentucky USA. It appears to be a crinoid holdfast. Rock contains a lot of crinoid fossil fragments.

It reminds me of a Myelodactylus crinoid fossil. See these previous posts of ones found in this area:

https://louisvillefossils.blogspot.com/2014/05/myelodactylus-crinoid-attached-to.html

https://louisvillefossils.blogspot.com/2010/06/silurian-crinoid-arm.html 

 https://louisvillefossils.blogspot.com/2020/02/myelodactylus-convolutus-crinoid-from.html 

https://louisvillefossils.blogspot.com/2020/02/myelodactylus-convulotus-crinoid-from.html

https://louisvillefossils.blogspot.com/2010/05/silurian-crinoid-arm.html 

Pycnodus platessus Fish Fossil

This fossil was displayed on August 2022, at the Harvard Museum of Natural History in Cambridge, Massachusetts, USA. This fish fossil is called Pycnodus platessus (Blainville). This specimen was found at Monte Bolca, Veneto, Italy. It dates to the Eocene Epoch, Paleogene Period. Catalog number is MCZ6248 or VPF-6248.

https://mczbase.mcz.harvard.edu/guid/MCZ:VP:VPF-6248

https://hmnh.harvard.edu/