Saturday, January 21, 2023

Dactyloidites asteroides Fossil

 

While researching a mystery fossil that looks like flower petal indentations, I came across jellyfish imprints described as medusa. The image above is of a Cambrian aged Dactyloidites asteroides (Fitch, 1850). Image is from Charles D. Walcott (1850-1927) and was re-published as figure 1012 on page 228 A Textbook of Geology Part II Historical Geology by Amadeus W. Grabau (1870-1946).

PDF of book can be found:

https://archive.org/details/textbookofgeolog02grabrich/page/n5/mode/2up

Wednesday, January 11, 2023

Pinus Plant Fossil

 

This image shows a Pinus pine needle fossil found in the Florissant Formation of Teller County, Colorado, USA. It dates to the Chadronian Stage (37.2-33.9 million years ago) of the Eocene Epoch of the Paleogene Period. Thanks to Doug for the image. Field of view 21 mm.

Tuesday, January 10, 2023

Fagopsis longifolia Fossil with Insect Predation

This image shows a Fagopsis longifolia (Hollick, 1909) leaf fossil that was skeletolized by insects found in the Florissant Formation of Teller County, Colorado, USA. It dates to the Chadronian Stage (37.2-33.9 million years ago) of the Eocene Epoch of the Paleogene Period. Thanks to Doug for the image.

 

Learn more about this plant:

https://www.nps.gov/flfo/learn/nature/fagopsis-longifolia-reconstruction.htm