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Showing results for tags 'Oligocene'.
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While playing with my poo (the fossilized version), I noticed this imprint. It is adjacent to a bone fragment. I'm assuming it is the imprint of a piece that broke away from the bone inclusion. It looks a bit unusual/ornamental, but I am hoping it is recognizable to one of you brilliant bone folks. This is from the Oligocene, Brule Formation, South Dakota. @Carl
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A friend of mine sent me some photos of a really strange bone, and I believe it is a part of a vertebra. It was found on a dredge island across the river from the Wando shipping terminal in Mt. Pleasant, S.C. I collected at the terminal for a couple of years so I know that the only fossil formations found there are the Ashley formation (late Oligocene marine exposure) and some unknown late Pleistocene formation. The processes on this vertebra (if it is a vertebra) are really strange. The primary mammals from the Ashley formation are cetaceans and dugongs, but this does not look like it belongs to either one. There are also some large fish, like billfish and sawfishes. Does anyone have any idea?
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This is another skull in my collection that look very similar to the other that I posted. I believe this might be another Hyaenodon. Please have a look and let me know what you think.
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I have had this interesting skull for many years and was hoping someone might be able to narrow down what it is. I do not have any collection information as the person who found it is deceased. I know it is from the White River/ Brule formation. My best guess is some type of Beardog Daphoneus? Any help would be appreciated.
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I have had a bunch of broken bits of Oligocene mammal coprolites sitting in a cup for years. I got them before I had a proper microscope. I decided to pick through another one last night. This one had what I thought could be a rodent incisor. So I started excavating with my X-acto blade. As I uncovered the bone, I realized it was not a tooth. I started noticing these very fine crescent shaped objects (which I unfortunately did not photograph). So I decided to give the poo a little vinegar bath overnight. As I lightly removed an unremarkable bit of fossilized fecal mass this morning, it split away revealing what might be a feather. I wet a bit of downy feather and photographed it for comparison. What do you all think? @Carl, didn't you have a coprolite with a feather inclusion? If so, did it look like this? The bone that I exposed is very furrowed and hollow. Of course this may not mean anything other than it is partially digested. Could it be a bird bone? @Auspex Here is the before and after photo of the coprolite fragment. Here is a magnified image of the a wet modern feather and the possible undigested feather.
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What was for supper? Did they love meeces to pieces in the Oligocene?
GeschWhat posted a topic in Fossil ID
Since I couldn't go out to dig for fossils, I decided to go on a micro dig. Today's dig was in a coprolite fragment from the Oligocene. Prior to excavation, the broken face of the coprolite looked like this. You can see a little bit of bone peeking through. After about an hour of excavation under 40X magnification, I uncovered what I think is a rodent tooth and possibly a toe bone and claw??? What do you think? Does anyone out there know their Rupelian rodents? Grinding Surface of the tooth: Side view showing roots: Small toe bone and claw or an fractured toe/foot bone? Is fossil poop cool or what???
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- brule formation
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Trying to confirm id of two jaw fragments. From an old family collection. Label: Oligocene - White River, Nebraska, Sioux County, USA Both noted as Poebrotherium (tiny extinct camel) First three photos are the first fragment. Based on the large canine tooth and size of the other teeth, I'm thinking it might actually be an oreodont? Last four are the second fragment. Smaller teeth and wider jaw. Maybe labeled correctly as poebrotherium?
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These Oligocene shark teeth from Temse (Boom formation, Rupelian, Oligocene) were classified as Odontaspis robusta, but I'm not so sure about it, as some of them lack cusplets. Could they be Isurolamna/some kind of Isurus?
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Help request! I am putting together a tool for judging rock age based on very crude, whole-rock, hand-sample observations of fossil faunas/floras -- the types of observations a child or beginner could successfully make. I view this as a complement to the very fine, species-level identifications commonly employed as index fossils for individual stages, biozones, etc. Attached is what I've got so far, but I can clearly use help with corals, mollusks, plants, vertebrates, ichnofossils, and the post-Paleozoic In the attached file, vibrant orange indicates times in earth history to commonly observe the item of interest; paler orange indicates times in earth history to less commonly observe the item of interest. White indicates very little to no practical probability of observing the item of interest. Please keep in mind that the listed indicators are things like “conspicuous horn corals,” purposefully declining to address rare encounters with groups of low preservation potential, low recognizability, etc. Got additions/amendments, especially for the groups mentioned above? Toss them in the comments below! Thank you..... https://docs.google.com/spreadsheets/d/1tVm_u6v573V4NACrdebb_1OsBEAz60dS1m4pCTckgyA- 5 replies
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- algae
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Upper anterior tooth Lit.: Bieńkowska-Wasiluk, M. and Radwański, A. 2009. A new occurrence of sharks in the Menilite Formation (Lower Oligocene) from the Outer (Flysch) Carpathians of Poland. Acta Geologica Polonica, 59 (2), 235–243. M. Szabo, L. Kocsis 2016: A preliminary report on the Early Oligocene (Rupelian, Kiscellian) selachians from the Kiscell Formation (Buda Mts, Hungary), with the re-discovery of Wilhelm Weiler’s shark teeth. Fragmenta Palaeontologica Hungarica, 33, pp 31-64.
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Found washed up on beach in Isle of Palms SC outside of Charleston. Are they Megalodon or White and what Epoch are they from
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Having found this in my unidentified drawer and without the documentation as to the species. Help?
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- coral
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Lit.: Ermanno, Quaggiotto & Antonio, De. (2014). Eosphaeroma obtusum (von Meyer, 1858) (Isopoda, Sphaeromatidae) dell’Oligocene inferiore della Valle del Ponte (Laverda, Vicenza, Italia settentrionale). Lavori Società Veneziana di Scienze Natutali. 39. 67-75.
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- aix-en-provence
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I enquired a unidentified tooth from an oligocene sandstone quarry in Eurasia, im kind of convinced its a entelodont tooth,doesn't look like a crocuta one... (i will find it and show you the file)
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From the album: Vertebrates
Diaphus sp. Lanternfish Oligocene Menilite Formation Jamna Dolna Poland- 3 comments
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- diaphus
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I purchase a horse tooth, supposedly form Dakota White River Formation Include 4 pictures. ID as Mesohippus S. Dakota Oligocene. These horses use to be 60 cm tall but my tooth is 48 mm long. In my opinion too big tooth for such a small horse. Is this possible?
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References: Kotlarczyk, J., Jerzmanska, A., Swidnicka, E. & Wiszniowska, T. (2006) A framework of ichthyofaunal ecostratigraphy of the Oligocene–Early Miocene strata of the Polish Outer Carpathian basin. Annales Societatis Geologorum Poloniae, 76: 1–111.
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Been doing some work with a dissecting scope and noticed this serrated barracuda tooth. Tooth is from the Old Church Formation (Oligocene). Is this common for small barracuda teeth?
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From the album: Vertebrates
Scophthalmus stamatini PAUCA, 1931 Oligocene Menilite Formation Jamna Dolna Poland -
From the album: Invertebrates
Eosphaeroma sp. Isopoda Early Oligocene Mallemort Département Bouches-du-Rhône France Possibly Eosphaeroma obtusum (von MEYER, 1858) -
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With my last project wrapping up, this small skull was sitting on my desk and needs to get done. Way too much of my collection is in a half done state. Eumys is a cricetid, which includes modern voles, hamsters, mice and rats. When identifying one, the primary character I use is the shape of M1 and the fact it has no premolars. It's the only White River rodent I'm aware of with 3 teeth in the maxilla, most have 4 or 5 (I am prepared to be contradicted ) . M1 is very distinctive in that it has 5 cones. My plan is to remove the matrix from the side of the skull and expose the zygomatic (if its fully there). Will leave matrix in the orbits for stability. Then cut the base of the block below the occiptals and have the nose pointing in the air. I have been doing alot of pin and vice work to get it to this current state, I'll use a MicroJack-3 to get rid of the majority of the block. Not the greatest skull, and I have some better ones, but definitely something that you don't see every day.
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Hi all. Please help me identify this Oreodont. Found in White River, Oligocene. Thank you
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I'm posting a current project in the hopes that it actually makes me finish it. I have a tendency to start several projects and set them aside for years. This Lepticitis was found in Wyoming in the late 90's. The initial prep was done by someone else (unknown) before the specimen made it to my collection. I've spent the last 5-6 hours under a scope removing glue, I would have almost surmised it was dipped in penetrant. It appears to have some abrasion damage as well, see the dorsal view of the skull above the orbits. I also took the opportunity to clean out foramen and do other various cleaning with pins and needles to get it to the state it is in now. Wish I'd though to get a pic before I started. Thanks to @jpc, I have some excellent photos of another Leptictis to base reconstruction off of. I'll post some more photos as the work progresses.
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The garage was a bit chilly to work in today so I decide to work in the office at my scope a bit instead. I'd like to be able to identify this piece (Peratherium, Centetodon?) but I'm struggling with all the post cranial elements covering the teeth. Any suggestions from the perpetrator community for how to proceed?
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