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Found 3 results

  1. I bought this ratty broken split fish several years back at an auction really, really cheap. It was mis-identified as a "Priscacara liops". It was my introduction to Green River fish. This fossil has some revealing details. This is a 7" Priscacara serrata and it displays the characteristic molariform teeth in the pharyngeal region that would normally be hidden in a more intact specimen. This type of tooth is for crushing prey. I would say this broken fellow displays these pharyngeal teeth even more clearly than the picture in Lance Grande's The Lost World of Fossil Lake. And he must have had thousands of specimens to choose from. See for yourself. These broken cheapos can be terrific! The entire fossil
  2. Hey everybody! I realized I never made a thread for my internship at the Field Museum in Chicago this summer. I interned as a fossil preparator under Akiko Shinya in the McDonald’s Fossil Preparation Laboratory (that’s the “fish bowl” lab on the second floor right next to Evolving Planet with the big window). There were some amazing things being prepared in the lab - an Antarctic Lystrosaurus, lots of Dicynodonts, Green River fish (some massive Phareodus), Sauropod femurs and ribs, a massive slab containing several sturgeon and paddlefish - but I’m not sure if I am allowed to post pictures of them, so for the sake of confidentiality I won’t just in case. This is the lab, and I always sat in the red chair, right up next to the window. One of my favorite parts of this internship was seeing all the little kids so excited about what we were doing in there and interacting with them. I was preparing a Priscacara serrata (specimen PF 16961) from the Green River formation of Wyoming, Eocene (~52 mya). All I used was a pin vise and an Amscope stereoscope. This fish also seemed to have slightly “exploded” from the pressure of fossilization as well, it’s jaw was crooked and head smashed, thought most fins seemed surprisingly well intact. The prep took 199.5 hours to complete, from May to August. I finished the prep on the final day of my internship, staying late after the museum had closed to the public and all the others in the lab had gone home. But it was far worth it, because "your name will forever be associated with this specimen." -Akiko Shinya I took a picture at the end of every day and I made a time lapse with it to see the growth! The link is at the bottom of the post. (I kept that floating scale in front of its mouth because I thought it was kind of funny that it looked like the fish was trying to eat it!) You can watch the time lapse Here
  3. sseth

    Priscacara serrata

    Priscacara Serrata is one of several species of recognized in the Green River formation. It is less common that its relative the Priacacara Liops.
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