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Showing results for tags 'Eocene'.
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Hello, Another weird fossil found in Al Ain close to Jebel Hafeet. It's very detailed and tuberculated all over. Looks similar to some crab pieces I've seen.
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This is a re-post of a topic I started late this last summer, but got lost during the August forum migration. Late in July I took a trip with a few friends out to the American Fossil Quarry and Fossil Butte National Monument to hunt for fossils out of the lower Eocene Green River Formation. The Green River Formation is a lagerstatte which is perhaps the best site in the world for articulated fossil fish, many of which also display varying degrees of soft tissue preservation. Fossils from this locality are mined commercially and are ubiquitous on the fossil market. Living in Denver, the Green River Formation is only a few hours away by car and I've always wanted to plan a trip out there to collect it, which is very easy to do and fairly cost-effective thanks to numerous pay-to-dig quarries where you get to keep essentially everything you find. I decided to plan a dig at American Fossil Quarry, which is one of the more popular quarries. I managed to convince two of my friends to come with me, and we spent a day and a half (12 hours total) at the quarry while camping at the nearby Lake Viva Naughton. It was my two friends' first times ever hunting for fossils, and they both report that their expectations were far exceeded at the quarry! There's a very good chance this trip was the start of the making of two new fossil fanatics. We had a blast out in the quarry, with the thrill of discovery doing plenty to stave off the oppressive sun and desiccating dust. We also made sure to visit some of the fossil shops located in Kemmerer and spent some time at the museum in the visitor's center of Fossil Butte National Monument, which is fantastically well put together and was so awesome to see. Each of us found plenty of treasures, including lots of Knightia and Diplomystus fish as well as coprolites (fish, stingray, and turtle), scales, occasional plant material, and even a few rarer fish. Here's some pictures from our adventure: Myself posing with a very nicely preserved Knightia eocena. My two friends hard at work splitting shale for ancient treasures. A few of my day one finds on my shelf. A very nice partial Priscacara found by one of my friends. A small stingray with associated Knightia found by a different participant the first day we were there. A mostly complete Amphiplaga brachyptera (one of the rarer fish) found by me, associated with a Knighta alta. Only the tail and part of the dorsal fin is missing, the rest of the fish is intact! Easily my prettiest fish: An absolutely perfect Diplomystus dentatus found by me the second day. One of the displays at the visitor's center of Fossil Butte National Monument. Cheers, and thanks for reading!
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- american fossil
- diplomystus
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Hello again, Here's another Eocene fossil from Al Ain, found close to Jebel Hafeet. There are also some nummulites in the matrix. I'm guessing it's a coral of some type. The preservtion is quite odd, almost like there's some iron oxide layer present. I've only seen this a handful of times, usually only on fossil gastropod shells. Edit: Forgot the scale! They honeycomb structure measures just under 1cm across (less than half an inch)
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Here's my Basilosaurus isis tooth . This is attached to a piece of jaw.
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- 34 à 40 millions dannées
- 34 to 40 million years
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M. praecursor is a relatively common find in vertebrate lenses of the Castle Hayne Formation. Leriche (1905) believing the species to be an Eocene version of the much younger Oxyrhina desori (Isurus desori) erected Oxyrhina desori praecursor. Leriche (1942) erected Oxyrhina praecursor americana for teeth with slightly different root and blade characteristics. These were placed into Isurus (White, 1931) and eventually a new genus, Macrorhizodus by Glickman (1964). Both praecursor and americana were accepted as distinct species (White 1956, Ward & West 1990, Zhelezko & Kozlov 1999 and Case & Borodin 2000a). Ebersole, Cicimurri & Stringer 2019 determined through studies of the extant Isurus oxyrhynchus that these different characteristics are attributable to heterodonty and placed americana as a junior synonym of praecursor. References: Ebersole, Cicimurri & Stringer, 2019. Taxonomy and biostratigraphy of the elasmobranchs and bony fishes (Chondrichtyes and Osteichthyes) of the lower to middle Eocene (Ypresian to Bartonian) Clairborne Group in Alabama, USA, including an analysis of otoliths. pgs 56-58 as Isurus praecursor Chandler, Richard 2015. Fossil Fish, Volume 3 of 4. North Carolina Fossil Club. pgs 67-68 Case and Borodin, 2000. A Middle Eocene Selachian Fauna from the Castle Hayne Limestone Formation of Duplin County, North Carolina. Plate 3 fig. 21-26
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- castle hayne
- eocene
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Hello everyone, I would appreciate if anyone can tell me if these are fossil wood or bone. It is from bracklesham bay (eocene). It is 1cm long Sorry if the pictures aren't clear enough
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Curious if anyone recognizes this beetle (?) from the Florissant Formation (Eocene; Teller County, Colorado). I had a look through "The Fossils of Florissant" (Meyer 2003) but did not see an obvious match.
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Here are my 2 best finds from today from my local Eocene pit. A really nice dark colored Otodus auriculatus (ric) and a nice little sixgill cowshark, Hexanchus agassizi. The ric is about 2.5 inches.
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From the album: Fossil Collection: DC Area and Beyond
Otodus obliquus Unknown location, Morocco Unknown Eocene -
From the album: Fossil Collection: DC Area and Beyond
Plant Fragment Bonanza, UT Green River Formation Eocene -
Thought I would share with you folks a little project I just finished up... until next field season starts. Last spring/summer I collected from two Eocene sites where I have found small mammal teeth in the past in the hopes of finding more small teeth (and bones). One site I screen wash; I quarry on site and find largeish bones and then scoop up the stuff I have excavated for screen washing. The highlight of in situ quarrying last spring was three turtle scapulae and a very small mammal maxilla. I screen wash it twice. A five gallon bag will break down to about a pint (not sure the metric equivalents) of rocks and fossils. Lots of broken pieces and lots of fish bones, and some reptile pieces such as lizard jaws and snake verts, and then a few mammal teeth. The other site is a quarry; I sit there and break rocks looking for little fossils then prep them under the microscope when I get home. I got about 30 mammal teeth and one jaw with two teeth in it that day. To organize the collection, I mount them on toothpicks and store them in 2 inch square plastic boxes. (Numbers 121 and 122 are yet to be found). Then I take photos and create stereophotos of each tooth. I am a big fan of stereophotos so get a kick out of this. Here are some pix for you all to look at. I have shown stereophotos here before, and there are instructions online on how to see them, but the basic idea is to relax your eyes let the two images merge into a middle image and then focus on that middle image. It will pop put at you in 3D. Or you can use a stereoviewer if you have laying around. (Tool's last cd came with one as one of the band members is also a 3d fan as is Brian May of Queen). I confess that my specialty is finding and prepping. I am not an expert at IDing these things, but where I can say something about the photo, I will. Each of these specimens is measured in millimeters and mounted onto a round toothpick. No scale bar, but the toothpick is about 2mm in diameter and will give you an idea of size. I take the photos through the eyepieces on my microscope. I do not have photostacking software so many have focus issues. In a perfect world I would also take pictures form the sides of some of these, but hey, there are more fossils to work on. The teeth are all seen looking at the occlusal (=chewing) surfaces The first batch of teeth are from the Washakie Fm of Sweetwater County, Wyoming. Bridgerian (middle Eocene) in age. These are the screenwashing finds 1. This is a very small upper third molar of a carnivorous or insectivorous mammal: I found this tooth in two pieces. Yo can see the glue line at the base of the high peak. 2. an upper molar 3. another upper molar 4. a rodent? sacrum; two fused verts: ( a contender for coolest fossil of the year) 5. A very interesting ungual. I have not seen this sort of toe bone before but I actually found two of these in my screen washings this fall. 6. This is the mammal maxilla that I found in the field. It includes two molars and a premolar. This is a strong candidate for my best find of 2023. 7. And this is a lower jaw with one molar. The next batch are from the quarry site in the Wind River Fm of Fremont County, Wyoming. They are early Eocene, probably Wasatchian in age. 8. another upper molar 9. a small astragalus 10. and still another upper molar 11. a very small premolar 12. A third lower molar 13. I think this one is a rodent molar And that's it for now Thanks for looking.
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- eocene
- microvertebrates
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Is this big round thing a fossil? It is next to a rock with fossilized shells I found. Where: Las Llajas Canyon, Simi Valley, California - dating back to Eocene Period, known for many fossils as this whole area used to be under water. Weight: 6.16 pounds Thank you
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Linthia Hovelacquei Eoceno Ypresiense© A.L.R
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Hello, I am looking for confirmation and if possible specific identification of these two insects I have from the Eocene-aged Green River Fm. of Colorado. 1. Labeled as "Mosquito" 2. Labeled as "Mantis"
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Hello dear forum participants. I present to your attention a tooth that has caused some discussion among us. The main version is that this is a rounded Physogaleus tooth, but in appearance it seems that its roots are not broken. Curious to know your opinion. The tooth was shown to specialists, and there is literature on our regional sharks. It appears to be Physogaleus but would like more clarity. Age: Upper Eocene, Middle Urals Thanks for your attention Question - if there are new questions and findings, is it possible to continue posting in this topic or is it better to create a new one based on our findings, if, of course, the reader is interested? Best regards, Anton.
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Ocean related fossils are something I'm relatively unfamiliar with, but I noticed this landscaping rock from Central Texas over the holidays that caught my eye. It didn't look to be the right material or texture for petrified wood. It reminded me of some of the coral pictures I've seen here. The rock was pulled from an area around the Hooper Formation I believe. The Wilcox Group. The rock is about two feet long by one foot wide. Could it be favosites?
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- central texas
- coral?
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One week fossil collecting trip out west, my sixth time in the past six years. Flew into Denver. Rented a car and headed down to Castle Rock where I spent the night at a motel. Next day drove up to Florissant Fossil Quarry. It was Wednesday and they're normally closed during the week in September, but I made special arrangements for a few hours visit. Compared to my two previous visits there, didn't do as well. The other times, I was there for the whole day, this time was just for three hours, and they had had a considerable amount of rain recently and so the shale was more crumbly and more difficult to split. Here are some of my finds. Plants:
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"Wie het kleine niet eert, is het grote niet weerd!" goes the Dutch saying (who does not appreciate the small, isn't worthy of the big). Three small fossils, any help with the ID's? The brown one looks like a bulla to me, from a dolphin maybe? No idea about the other two. All found on the Dutch coast, on the same location. Mammal bones on this location are from the pleistocene and holocene, shark teeth and bones from fish and sea mammals (dolphins and whales mostly) are from the eocene-pliocene.
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This came into my email inbox just now. This bird looks very familiar to many of us.... https://cowboystatedaily.com/2023/11/06/rare-first-of-its-kind-wyoming-fossil-bird-donated-to-chicago-museum/?utm_source=Klaviyo&utm_medium=campaign&_kx=FNPCgSCz7FplU90B8_ouKgYat5AOYRhTA2s_dLpzjqBx2CdT-fhicfAJbOddWJMi.UXPtrV
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I wasn’t expecting much from this weekend adventure, been having a dry spell with the last few hunts and a lot of misses. Gave it the good OL’College try again and oh did it pay off big time with finding not one but 2 teeth in extraordinary condition on back to back days and 2 different epochs vastly separated from each other geographically which is really cool. Time traveling but without the DeLorean! (Front and back photos of the larger tooth) 2 & 5/8 inches from tooth tip to the larger side of the root; which would be about 66 mm.
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- chubutensis
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I have a single shark tooth from an Eocene Cook Mountain Formation location in Newton County, Mississippi. I would like confirmation or correction on the ID, please. My best guess is Striatolamia macrota, but I could easily be very wrong. Unfortunately about half the root is missing and I'm not sure whether a nutrient groove was present of not. The blade is clearly not serrated. Total height is a hair under 2.1 cm and restored width is estimated at 2.1 cm also. Any and all help would be appreciated. Here are three pictures to show the shape (scale bar divisions are cm): And here is one close up view of the one remaining cusplet: Thanks for looking. Mike
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- cook mountain fm
- eocene
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My younger son Mel just led his first fossil trip of the year on our Eocene/Oligocene M&M Ranch in Nebraska last week. My sons, Mel and Marco Jr., are starting to get back from their prepper some of the fossils that they found on our ranch in 2018. Not all fossils go to the prepper. Mel preps some of the specimens himself. Below is a picture of the specimens Mel found in 2018 that he will prep. Here are a few pictures of 2018 specimens just back from the prepper. Mel found another saber cat in 2018 that is in prep. Below are a saber cat skull found by Mel and saber cat skeleton found by Marco Jr. in previous years on the ranch. They have found seven or eight so far on the ranch. I'll probably be going out to the ranch a couple of times this year. However, I spend most of my time at the ranch taking matrix that contains micro squamate, bird, amphibian, and mammal specimens. I'm currently working with seven researchers on this micro material. Marco Sr.
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Two sets of two rocks. Both from the marine eocene of Catalonia, Spain. Probably just some weirdly eroded rocks but just in case...
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