Quercus simulata Leaf Fossil

 Above is a picture of an oak leaf plant fossil called Quercus simulata (Knowlton, 1898). This plant fossil dates to the Miocene Epoch (23.8-5.3 million years ago). It was found in the state of Washington, USA. While not listed, it possible this specimen is from the Latah Formation.

The fossil was on display in the Evolving Planet section of The Field Museum of Natural History in Chicago Illinois, USA as of August 2020. Accession number is P22229. They have a nice collection of plant fossils on display.

This type of leaf specimen was described by Frank Hall Knowlton (1860-1926) in the U. S. Geological Survey Eighteenth Annual Report., Part. 3, page 728, plate 101, figures. 3,4; plate. 102, figures 1, 2 1898 in the Payette formation of Idaho.

Knowlton later identified in the Latah formation of Washington in U. S. Geological Survey Prof. Paper 140, page 38, plate 22 figures 3, 4, 1926. See leaf image from figure 3 below.

Source A Revision of the Flora of the Latah Formation by Edward Wilber Berry.

https://pubs.usgs.gov/pp/0154h/report.pdf

Callianopsis Shrimp Claw Fossil

Here is a fossil I profiled in August 2012. My cousin brought this back from Washington state and yesterday he prepped it. This picture shows a picture of it August and now January 2013.
We think this is a claw from a ghost or mud shrimp called Callianopsis. The fossil could be from the Lincoln Creek formation of the Oligocene epoch.

Thanks Kenny for the pictures!

Washington State Ghost Shrimp Fossil Claws

These two images are what I think are Callianopsis clallamensis shrimp fossil claws. They might also be referred to as ghost or mud shrimp. Fossils are from the Washington state area and could be from either the Lincoln Creek or Pysht formations. The date of the fossils is to the Oligocene epoch of the Paleogene Period. The fossils were acquired by my cousin in a trade of fossils from the Louisville Kentucky area on a recent visit to the area.

Learn more about fossils from that area of Washington state, USA as this nice crab fossil web site: www.fossilcrabs.com

Thanks to Teri for the pictures.

Calamites Living Desendants

This plant is known as Equisetum or common names Horsetail reed or pewterwart. It is known as a living fossil. The plant is a descendant of Calamites.

This post on Neocalamites fossil plants at Malaysian Triassic Blog inspired me to create today's entry. I had been meaning to post these recently taken pictures.

These first three pictures were taken recently in Washington state.

These last four were taken in Paris, France near the Jardin Des Plantes.