Name: Knightia alta
Order Clupeifomes, Family Clupeidae
Age: Eocene
Size: The fossil 4” on a 6 3/4 x 4 1/4” oval plate
Fossil Location: Green River Formation, South West Wyoming
Comments: I was privileged to pick up a small batch of fossil fish from fossil Lake Gosiute at the 2011 Tucson Mineral and Fossil Show. This collecting area has been closed to the public for many years. According to the vendor, these fossil fish came from a collection dating back to the 1960s. The fossil fish from Lake Goisute have a different type preservation compared to the more commonly found “split fish” or “18 inch layer” fish from Fossil Lake. The Lake Gosiute shales are often dolostones, limestones, or oil shales. Though the fish in both lakes comprise the same species, the ones from Lake Goisute have a different look and presence. They exhibit very good bony detail and a somewhat ghostly appearance. Their distinctive look makes them instantly recognizable to the knowledgeable collectors eye. The fossil fish from Lake Gosiute are also difficult to acquire since the prohibition of collecting in these beds a few decades ago.

This particular fish is Knightia alta, a close relative of Knightia eocaena. Knightia was a schooling fish, which is sometimes found in mass mortality layers, confined to a single plane, indicative of a single event. Theories as to the reasons include stratified water turnovers as well as poisoning due to blooms of blue-green algae.

Price: $70.00 - Fossil Code PFF472 - Free postage in the USA - Purchase

Name: Diplomystus dentatus
Order: Ellimmichyiformes, Family: Ellimmichthyidae
Age: Eocene
Size: The fish is 3” in length on a 3” x 5” plate
Fossil Location: Green River Formation, South West Wyoming
Comments: Diplomystus dentatus is the second most common fish found in the Green River Formation. This one displays phenomenal detail, wonderful contrast, and almost jumps off the plate. It is an exceptional fish at a most affordable price. Diplomystus' morphology, including its upturned mouth is prototypic of a surface feeding fish. The genus are herrings that likely fed on small surface dwelling fish as Knightia, is evidenced by numerous fossils found with Knightia is the stomach or mouth. The genus Diplomystus is also found to occur in Cretaceous strata in South America, as well as Cretaceous Lebanon

Price: $50.00 - Fossil Code PFF486 - Free postage in the USA - Purchase

Name: Diplomystus dentatus
Order: Ellimmichyiformes, Family: Ellimmichthyidae
Age: Eocene
Size: The fish is 3” in length on a 3” x 5” plate
Fossil Location: Green River Formation, South West Wyoming
Comments: Diplomystus dentatus is the second most common fish found in the Green River Formation. This one displays phenomenal detail, wonderful contrast, and almost jumps off the plate. It is an exceptional fish at a most affordable price. Diplomystus' morphology, including its upturned mouth is prototypic of a surface feeding fish. The genus are herrings that likely fed on small surface dwelling fish as Knightia, is evidenced by numerous fossils found with Knightia is the stomach or mouth. The genus Diplomystus is also found to occur in Cretaceous strata in South America, as well as Cretaceous Lebanon.

Price: $60.00 - Fossil Code PFF467 - Free postage in the USA - Purchase

Name: Carcharocles megalodon
Class: Chondrichthyes Order: Lamniformes
Age: Miocene/Pliocene
Size: This fossil tooth is 3 7/17” in length
Fossil Location: The Hawthorne Formation of South Carolina
Comments: This is an excellent, mid-sized, collector grade Megalodon tooth. It has little serration, tan/grey color, glossy enamel, and an excellent root.The quality and value of Megalodon teeth is determined by factors such as color, well-defined serration, glossy enamel with limited cracking, a solid root, quality bourlette, and an intact tip.
Price: $190.00 - Fossil Code PFF489 - Free postage in the USA - Purchase

Name: Carcharocles megalodon Shark Tooth
Class: Chondrichthyes Order: Lamniformes
Age: Miocene/Pliocene
Size: This fossil tooth is 3 1/2” in length
Fossil Location: The Hawthorne Formation of South Carolina
Comments: This is an excellent, mid-sized, collector grade Megalodon tooth. It has phenomenal serration and tan/grey color.
Price: $130.00 - Fossil Code PFF509 - Free postage in the USA - Purchase

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