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Found 10 results

  1. Ludwigia

    Cockerellites liops

    From the album: Sketches

    The original is from the Middle Eocene deposits at Fossil Lake, Kemmerer, Lincoln Co., Wy. Green River Formation, Fossil Butte Member.
  2. I thought I'd try my hand with this Kemmerer Cockerellites liops this time around. This took me a looooong time because of the fine differences in shading, but I'm pretty happy with it. As you can see when compare to the original photo, I cheated a bit on it by filling in the missing parts of the fins.
  3. KompsFossilsNMinerals

    Cockerellites I prepped roughly a month ago

    This is a Cockerellites I prepped about a month ago. I used a dremel lightly to get the top layer of matrix off, then used a regular pick for the finer preparation. For my second Cockerellites prep ever, I think I did a pretty good job. The coolest part of this piece is that there is a long piece of coprolite(?) ontop of its head. I have no clue if this would bring up the value, I kind of doubt it would though.
  4. Top Trilo

    Fish prep

    Finished this fish yesterday, preservation wasn’t terrible. The head Isn’t preserved well and neither is the tips of the fins but anything is better than my first prep which was on an exploded knightia. Could of turned out better but I’m satisfied with it. I have a couple questions. 1. can you tell if it is a priscacara or a cockerellites? I believe they are two different genera with different species. 2. What is the part in front of the fish’s head? It’s not bone, it’s very thin and different, I have no idea what it is. Oh and I was prepping with a not so sharp needle
  5. Roby

    Cockerellites liops

    This fish came out of the upper layer, "money layer", at American fossil. They no longer allow pulling rock off the wall here. Changed genus from Priscacara: http://www.thefossilforum.com/index.php?/topic/100366-december-2019-finds-of-the-month-entries/&do=findComment&comment=1120047 Lit. John A. Whitlock, 2010. Phylogenetic relationships of the Eocene percomorph fishes Priscacara and Mioplosus. Journal of Vertebrate Paleontology 30(4):1037–1048, July 2010 by the Society of Vertebrate Paleontology. Lance Grande, 2013. The Lost Worl
  6. Ludwigia

    Cockerellites liops (Cope 1877)

    From the album: Pisces

    13cm. long 18 inch layer Fossil Butte Member Green River Formation Middle Eocene Fossil Lake, Kemmerer, Wyoming, USA
  7. Thecosmilia Trichitoma

    Priscacara or Cockerellites

    What is the proper name for Priscacara/Cockerellites fish, Priscacara or Cockerellites?
  8. I have difficulties to find out what this small fish (1.8" or 4,5cm) from the Eocene GRF is. A baby Priscacara or Cockerellites? Or is it a Hypsiprisca hypsacantha? Or one of these so far (?) undescribed Priscacara species? The tail fin seems to be very, very slightly forked (almost round) and the Praeoperculum bears some spines. So I would guess Hypsiprisca hypsacantha, but I am not sure. Who can help? Thanks Thomas
  9. I have been blessed this summer to have some amazing finds up in Green River. A couple of them come in the form of strange pathologies on a common fish. The Priscacara (or Cockerellites as it is now known) Is quite a common fish to find in multiple layers of the Green River Formation. The Cockerellites is closely related to modern perch, and is a highly prized fish due to it's unique appearance! I know there was a paper recently written (I believe in 2010) by John Whitlock, but I cannot seem to find it on any open access sites. Part of his debate for a
  10. FossilDudeCO

    Newest Fish Panel

    I just had to show this one off! I saved the Notogoneous from a terrible fate of never being prepped! My buddy thought he was missing part of his head after he roughed it out so he set it aside. Notogoneous is my favourite fish so I took a gamble and had it prepped out, to my surprise it was all there with a wide open mouth! Notogoneous: 24 1/8 inches (61.28cm) Diplomystus: 15 inches (38.10cm) Knightia: 7 inches (17.78cm) Cockerellites (Priscacara): 5 3/4 inches (14.60cm) Entire panel measures 63 1/2 inches (156.21cm) wide by 22 inches (55.
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