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Split Broken Green River Priscacara serrata has cleared its throat
Biotalker posted a topic in General Fossil Discussion
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 t- 4 replies
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Hello! When I bought my air abrasive a year ago the guy that I bought it from gave me a bunch of unprepped green river fish as he was retiring. One issue that seems to commonly come up is that no matter how low I set my psi or how slow I go on some fish the "skin" seems to pit and develop holes. Is there any way to avoid this? I've gone down to as low as 1-3psi with dolomite and this still happens. I've noticed that it tends to happen on disarticulated specimens mostly, and part of me feels this is more of a preservation issue than anything. The guy I got my abrasive from also included paint I
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The Green River Formation is one of the most well-known fossil sites in the world, occupying present-day Colorado, Utah and Wyoming. This Lagerstätte has been noted for its well-preserved fish fossils, as well as numerous invertebrates, plants, and sometimes even reptiles and birds. Green River fossils are Eocene-aged, at 53.5 to 48.5 million years old. Thankfully, not only are Green River fossils attractive, they also remain affordable to the casual collector. Allow me to present my humble collection. Crocodile tooth Borealosuchus sp. Southwest Wyoming
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Hi everyone, I made a discovery of a Knightia on August 12th, 2021 at the green river formation in Wyoming. Today, I noticed something VERY interesting. Pictures are attached, one under a high power magnifier. As you can see, this Knightia did NOT get fossilized on its side. On the contrary, it is almost a top-down view of the fish. You can see one whole eye socket, as well as a part of the other, you can see where the spine attaches to the skull, the ribs go both ways, the tail is top down, the list goes on. It even looks like there are 2 nostrils, but this I am not su
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So, I was going through my fossils from my last trip to Kemmerer Wyoming. One of them accidentally split, revealing this. It looks like a kind of Coprolite, but I’m not sure. It’s got scales in it, but it’s too flat to be regular Coprolite. I suspect it is stingray Coprolite, as the people there told us to watch out for it, because they have been finding a lot. Can someone help me ID this? Jared
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After my first glimpse of The Lost World of Fossil Lake by Lance Grande (if you don’t have it, get it at any price!), I was hooked on Green River fossils. Here is the first one I prepared myself. I bought it directly from one of several “storied” Wyoming quarries. It is from the 18-inch layer and is not found by splitting the fish but by detecting the raised surface of the skull and vertebrae. Then one must somehow scrape away the relatively soft matrix to expose the fossil below (perhaps 1 to 5mm deep). The tools I used are pine vises that held sewing needles. If I could safely scrape away la
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Well, I’m finally getting to dig into my truckload of fossils from my Wyoming trip with @RJB so it’s my turn to open up a prep thread. I spent a couple hours today poking around to find the perfect fish to start with. The 18” layer never disappoints. This good sized Diplomystus has 2 Knightia on top of it. I’m going to try to save both but I’m concerned that the right hand one is covering most of the Diplo’s skull. If that’s the case, the little guy will have to go! This is after about 90 minutes of scribe work.
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I'm working on some new fossil fish paintings and thought I'd share them here. I'm trying to work my way through the Green River formation fish first, though I'm sure I won't paint them all. I've only done two so far, but I'll add more as I paint them. The quality will vary, I'm sure. Here's my take on a Priscacara. and of course a Knightia: I've started on a diplomystus, and will post that soon. Thanks for looking. Oh, for those interested, I'm using gouache paints, similar to watercol
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Hi everyone, My third trip to Kemmerer, Wyoming is in one week. I’m going to be digging in the Green River information. Last trip, I came home with a whole Mioplosus labracoides. This time, we have two friends from Japan digging with us. My goal for this trip is to find ANY decent fossil to show my Japanese friends who are digging with us. I don’t care what we find, as long as we all have fun. The only problem is, their suitcases are full. They can’t bring fossils back to Japan with them because they don’t have room in their suitcases. As a resul
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2 week exploration and collecting trip, on to the fishes
hadrosauridae posted a topic in Fossil Hunting Trips
Day 5 in South Dakota was a total bust for my son and me. The section of the quarry we worked has large ironstone and clay boulders, but also has large bones. We sat next to a jacketed femur and worked back the wall face. We didnt find more than a few small bits at the end of the day, but I said that something big was there. Big rocks = big bones. Sure enough, Walter sat down in our spot 3 days later and immediately uncovered a ceratopsian dentary! By this point were were already on to our next destination in Kemmerer, Wyoming. 3 days of splitting shale for fish, hoping for th- 5 replies
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What a trip my son and I had this year! We started out in the Hell Creek fm of South Dakota. This was a special trip through Paleo Adventures for his "veteran" guests who have already spent a few years with him and could operate without supervision. We started out hunting a new ranch. This property is virgin ground with LOTS of acreage that needed exploration. The group was split into 3 teams, each taking a different area. Our team was further split into pairs. So, it was my son and me, exploring for new outcrops. The sun was intense, the temperature hot, and hours of hiking and sta
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Hi everyone, So, I’m going back to Kemmerer, Wyoming for the third time on August 12, 2021. My entire family will be going as well as two friends from Japan. I’m going, courtesy of fishdig.com. I know the two from Japan will have a great time. I’m sure I’ll have a good time also. I wonder what I’ll find this time. Last time, I found an awesome Mioplosus labracoides. Picture attached. Jared
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Hi all, I was wondering if anyone could give me advice on 1. air scribes you’ve found are good for fossil prep, and 2. All the parts needed for Scribes. I’m not quite sure all the parts needed for a scribe, I know you need the scribe itself and an air compressor, but I don’t know beyond that. P.s; the fossils I’ll be working on will be Green River fish, for the most part.
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From the album: Pisces
37cm. long. Eocene (Ypresian/Lutetian). Green River Formation. 18" layer. Found at Stone Fossils Quarry, Lincoln County, Wyoming. Acquired from Kris (Ptychodus04). -
From the album: Vertebrates
Atracosteus simplex (Leidy, 1873) former name: Lepisosteus simplex Middle Eocene Green River Formation Kemmerer Wyoming USA Length 40 cm-
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Asineops (Greek for "donkey-faced") squamifrons was first described by Cope as having an affinity to the pirat perch family. Later, with more detailed study, this species was found to lack the diagnostic characters of that family. Thus it is not yet clearly assignable to order. Although this species is much rarer in the Fossil Lake sediments than in Lake Gosiute deposits, the specimens from Fossil Lake are much larger than those from Lake Gosiute. Reference: Edward D. Cope (1870): Observations on the Fishes of the Tertiary Shales of Green Nov. River, Wyoming Territory. Proc. A
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- tff-oilshale-ch2514
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Hello everyone I'm currently cataloguing my fossil collection and have came across some green river fossils with no real ID. I would greatly appreciate any advice from the green river buffs out. First up are some insects. Both labeled as from the Parachute creek member in Garfield County. Size is around 1cm each.
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I've got a few Green River fish to prep and am having difficulty with the fins. I've prepped invertebrates before but haven't hit on the technique for these fish yet. I have a Paleo-Aro airscribe and an abrasive blaster, sodium bicarb and dolomite. The Paleo-aro seems too robust for the delicate fin rays and tends to damage a lot of them. I'm thinking of getting a micro jack but not sure of which # would be appropriate. I almost have my air-blaster up and running again. Is using sodium bicarb at a low pressure the answer? I know a couple of people who only use manual picks and have amazing res
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Hiya everyone my friend has sent me sone green river fishes I’m guessing there knightia he’s glued some pieces together because they have started to flake but I’ve noticed a little thing on the back plate and revealed it a help would be great to ID
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Real or fake? rare fish from the US Eocene.
mardopa posted a topic in Is It Real? How to Recognize Fossil Fabrications
True or fake? And what species is it? I have this rare fish from the US Eocene. It has color and a lacquer applied. The rock is authentic and I have passed a flame over the fish and it does not melt, it is not resin. But I still have doubts. -
I bought this prepare your own fossil fish either knightia or diplomystus so I could prepare something for the first time which is why it looks like this don’t judge. I was wondering two things actually, one is it a knightia or diplo? And two are all green river fish this hard? I know I didn’t do a good prep job but was the fish poorly preserved as well? It was paper thin in some places and the fish doesn’t look whole it looks like its bones got moved after it died. Oh it’s also about 3 inches from the mouth to the “end” of the tail
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Green River Fish question
fossilguy312 posted a topic in Is It Real? How to Recognize Fossil Fabrications
Hello all, I have been long searching for an exceptionally high/museum quality aspiration example from Green River. I recently have found myself with the opportunity to acquire this specimen. I've been told that there is a small amount of restoration on the tail of the Priscacara but I don't know exactly how much/what it entails yet. I'd ideally prefer a specimen with 0% restoration but I don't know how realistic that is. For scale, the diplo is 18" long, I'm told. It's obviously pretty cool that this is a Priscacara aspiration as my understanding is that this is pretty uncommon. -
My wife and I went on a 7500+ mile ramble to break out of our COVID doldrums. Due to the virus we had to change up many of our original plans... which conversely added a number of additional fossil hunting locals as they allowed us to mostly avoid our fellow humans and maintain social distancing by many many miles. As part of our trip preparations my wife sewed us a number of masks, including a whole series of fossil hunting masks for me. Originally we were supposed to stay in Chicago, but we elected to avoid staying in the city, so we only got to do a drive by
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I still have about 30 more to finish preparing, but so far, here are the best two I have prepped from my 2019 Green River run:
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Last year, to celebrate finishing my undergraduate degree, my girlfriend and I went on a long (9,000+ mile) road trip around the western US and at long last (a little over a year since their discovery) the last of the fossils we found are out of the refrigerator and I’ve finally gotten all of them photographed. Here are some of the highlights and best fossils we found. A rough map of the route of the trip While the trip wasn’t entirely fossil centric we wanted to hunt at a few cool spots along the way. We chose to visit 5 fossil locations, the first of which was
