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Juvenile Phareodus | Green River Formation | Wyoming

Original price $39.00 - Original price $39.00
Original price
$39.00 - $39.00
Current price $39.00
Phareodus sp. 
Eocene (51.98 Million Years Ago) 
Private Quarry, Green River Formation, Wyoming, USA 
Obtained from the collection of Dr. William Rieger

Plate approx. sizes: 5.5" x 4.5"

Fish approx. sizes: 2.75"


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