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14" Diplomystus | Green River Formation

Original price $1,295.00 - Original price $1,295.00
Original price
$1,295.00
$1,295.00 - $1,295.00
Current price $1,295.00
Diplomystus unrestored specimen 100% Natural 
Eocene (52.3 Million Years Ago) 
Green River Formation, Wyoming, USA 
In Stone Fossils Private Quarry
Plate size approx: 12.75" x 22.75"
Adult Diplomystus approx: 14"
*This specimen has been glued in a seam to keep the integrity of the fossil. Some delamination can occur with specimens of this age thus the need for stabilization. It is unnoticeable from the front. See photo 
Due to the size of this specimen, it will be shipped in an internationally compliant wooden crate. 
 
Please contact us for a specific shipping rate. You may opt in for in-store pickup to cut your shipping costs all together and pick up your specimen in person. You can pick up from our store location in Kemmerer, Wyoming, or we deliver to both the Denver Gem & Mineral show in the Fall and the Tucson Gem & Mineral show in the winter. For any questions, please don't hesitate to contact us directly.
 
 
Diplomystus is an extinct genus of freshwater clupeomorph fish distantly related to modern-day extant herrings, alewives, and sardines. The genus was first named and described by Edward Drinker Cope in 1877.
Ray-finned Fish - Diplomystus dentatus
Order Ellimmichthyiformes, Family Paraclupeidae
The last known species of the Ellimmichthyiformes order went extinct sometime in the middle Eocene. D. dentatus is a primitive relative of the modern day herring. The genus Diplomystus is also known from fossil deposits in China.
D. dentatus is the 2nd most common fossil fish found from Fossil Lake. Specimens ranging from embryonic size (about 0.7 inches) to full-grown adults (about 26 inches) are common. Smaller-sized specimens are more commonly found in mid-lake than near-shore deposits. This suggests that D. dentatus spawned in open water.
This species' upturned mouth indicates it fed at the surface of Fossil Lake. D. dentatus specimens are commonly found with other fish stuck in their mouths, including other D. dentatus specimens.