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Phareodus testis | Zero Restoration | Green River Formation

Phareodus testis | Zero Restoration | Green River Formation

by In Stone Fossils
$850.00 - $850.00
$850.00
$850.00 - $850.00
$850.00
Phareodus testis
Eocene (51.98 Million Years Ago) 
Green River Formation, Wyoming, USA
In Stone Fossils Private Quarry 


Plate approx. size: 14.5" x 10.75"
Phareodus approx. size: 12.75"


Due to the size of this specimen, it will be shipped in an internationally compliant wooden crate. Crate pricing is included in the price. However, shipping is separate and not included in the price.  Please contact us for shipping quote.

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.



This Phareodus testis, smaller than it's Phareodus encaustus counterpart, was a predator in ancient Fossil Lake.


Bony-Tongue Fish - 2 Species Identified: Phareodus encaustus & Phareodus testis

Order Osteoglossiformes, Family Osteoglossidae
Living members of the Osteoglossidae family:
  • include 10 modern species
  • live exclusively in tropical freshwaters
  • found in South America, Africa, Asia, and Australia
  • mouth-brooders (parents hold eggs and hatchlings in their mouths)
Phareodus fossils:
  • adult specimens usually found alone, but juveniles known from mass mortalities
  • indicates that Phareodus schooled as a juvenile and became solitary as an adult
  • often preserved with smaller fish in their jaws and stomach, indicating they were predators
  • rearward oriented fins on back and underside, adaptation for speed
  • large, sharp teeth
  • max known size of P. encaustus: 30 inches
  • max known size of P. testis: 20 inches