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Showing results for tags 'Oligocene'.
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Would someone have the following PDF? Dixon, HL & SK Donovan, 1998. Oligocene echinoids of Jamaica. Tertiary Research 18#3-4: 30 p., 6 figs, 10 pls, 3 tables Thanks Mike
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I recently saw this carnivorous mammal tooth from the Brule Formation for sale. It is labelled as being that of a Hesperocyon gregarius, but what little I know of carnivorous mammal dentition leads me to believe that the tooth could in fact come from a Hyaenodon. As always, I've decided I'm going to play it safe and ask someone of greater expertise to verify this. It is my understanding that @jpc, @Randyw and @ParkerPaleo are all Brule Formation specialists, so I will take the liberty of "@ing" you all in. Thanks in advance for any guidance Othniel
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From the album: Vertebrates
Propercarina sp. Early Oligocene Rupelian Frauenweiler Germany-
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I'm very belated with this report, but it took until today to finish all the prep work on the pieces I picked up on this trip. This time was fun and quite productive, I went out with my brother and 2 of our friends. None of them are of the fossil hunting persuasion, but they enjoyed it nonetheless. This Liracassis apta was a great opportunity to test out the chisel attachment on my new air scribe.
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A Fossil Show Victory - My White River Formation displays takes first place at a gem and mineral show!
Opabinia Blues posted a topic in General Fossil Discussion
So this happened back in late March and I’m just now getting around to posting (or boasting?) about it. At this years gem and mineral show in Loveland, Colorado I entered a display case of White River Formation fossils which I have collected mostly in Colorado over the last few years. I emphasized diversity, attempting to show the diversity of the organisms (or at least prominent organisms) in the ecosystem while aiming to educate show visitors about the under-appreciated Eocene to Oligocene transition. Over 4,000 people came to the show, and at the end of the weekend the judges selected my case for first place in the fossils category, which I was very happy with because there were some other really awesome fossil displays people had put together. For the win I received a trophy and blue ribbon. I definitely intend to display again next year at the same show!- 21 replies
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From the album: Fin Lover's South Carolina Finds
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Matilija Canyon Plant Fossil - Los Padres Mountains, Southern California
ezeemonee posted a topic in Member Collections
Found a carbonized plant fossil in Sespe formation conglomerate stone in the Matilija Canyon area of the Los Padres Mountains of Southern California. Likely something from the Horsetail family or something in the bamboo family. Based on the below report, these rocks are likely from the Oligocene or Eocene periods. The area has mostly Marine fossils but this was probably a land plant that washed out to sea and was deposited along with other flood debris on the shallow sea floor. Some credit on the geology of the area to: BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA V o l . 39 . pp. 1 0 8 7 - 1 1 0 2 D e c em b e r 30.'1928 SIGNIFICANCE OF THE MATILIJA OVERTURN BY PAUL P. KERR AND HUBERT G. SCHENCK (Read before the Society December SO, 1927)-
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From the album: Fin Lover's South Carolina Finds
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I have been working on sorting teeth I've collected from the Chandler Bridge Formation (Oligocene, ~28 MYA) from one site by species. I've not put adequate time into learning how to differentiate the smaller teeth such as these, and am working on filling those gaps in my knowledge. Here I have isolated 6 "distinct" types of teeth that I am attempting to put a name on. Apologies on the photo quality, I was in a bit of a rush, hopefully there is enough detail to understand the general characteristics I am attempting to distinguish between. 1. Wide root, flat and, typically, curved to one side. Is serrated from where the enamel meets the root all the way down onto the blade. 2. Wide thin root, thin straight blade, serrations. 3. Almost identical in shape to number 2, except straight blade with no serrations. 4. Larger teeth in general compared to the others, curved and straight blade with nos errations, has enamel "wrinkles" similar to serrations near the root only. 5. Very stubby root (horizontally compressed and somewhat more bulbous than the other teeth). Long, straight blade with no serrations. 6. Smaller in general than the other teeth. Serrations along root, but not on the blade. Blade is slightly curved. These are my proposed identification of the teeth: 1. Reef/Requiem shark upper teeth of some kind 2. Unknown 3. Lemon shark lower lateral teeth 4. Lemon Shark upper teeth 5. Lemon shark lower central teeth 6. Requiem shark lower teeth
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Hi, appreciate any ID help on this one from Chivo Canyon in Southern California. About 4-5" in diameter found inside of a roughly 1 foot diameter rock. The area is known for Eocene and Oligocene period fossils. Guessing this may be a sponge, coral, or possibly echinoderm like a Sea Urchin. Stumped on the ID so far. Most of the other fossils in the canyon are mollusks and gastropods. Thanks! -Chris.
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Just posting some pics of some finds from Chivo Canyon from 2020 and 2024. Would really appreciate any ID inputs on the Unknown Fossils especially the roundish one with many circles in it. It was roughly 4-5" in diameter in the center of a roughly 1 foot diameter rock. Guessing Sponge, Coral, or may an Echinoderm like an Urchin. The Chivo Canyon area is known to have fossils from the Eocene, and Oligocene periods. There are also a couple other unknown fossils which could be bones but not sure. The Tower Snails or Turritellas are probably mostly Turritella Uvasana. I don't know what the other Gastropods are. Thanks in advance for any ID ideas! -Chris.
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From the album: Fin Lover's South Carolina Finds
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My first contribution to science
Fin Lover posted a topic in Partners in Paleontology - Member Contributions to Science
I am excited to finally announce my first contribution to science! This is a section of dentary/beak of a Pelagornis cf. sandersi from the Ashley Formation in Summerville, South Carolina. This was found in December 2023 and has been donated to the new Charleston Center for Paleontology, where it will reside in their collections. A paper featuring it and other Pelagornis sandersi fossils from the area (which there aren't many of) is in progress. Here it is after prep:- 11 replies
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- ashley formation
- charleston center for paleontology
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Where can Otodus angustidens teeth be found outside the U.S.?
bthemoose posted a topic in General Fossil Discussion
In the U.S., Otodus angustidens teeth seem fairly common (primarily from South Carolina). From scouring the web, it looks like O. angustidens can also be found in at least in a few other countries, including Australia, Germany, Kazakhstan, and Mexico. However, I very rarely see these pop up, whether it's for sale or otherwise. In contrast, I see other members/stages of the chronospecies--obliquus, auriculatus, sokolovi, chubutensis, megalodon--show up not infrequently from multiple locations around the world. Is this because there are fewer accessible Oligocene-aged marine deposits globally, more restrictions on fossil collection and/or export where these deposits do occur outside the U.S., or for other reasons? Do you know of any other countries besides those I've listed where angustidens are found? If you have any non-U.S. angustidens teeth in your collection, please also do share photos! This is the only non-U.S. one I own, from Baja California, Mexico.- 5 replies
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- oligocene
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From the album: Chandler Bridge Formation Microfossils
Perhaps a piece of a pharyngeal plate?© CC BY-NC-SA 4.0
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- jaw
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From the album: Chandler Bridge Formation Microfossils
A grinding plate or gastric mill?© CC BY-NC-SA 4.0
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- oligocene
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From the album: Chandler Bridge Formation Microfossils
© CC BY-NC-SA 4.0
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- mandible
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- ghost shrimp
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From the album: Vertebrates
Trachinus minutus (Jonet, 1958) Early Oligocene Rupelian Jamna Dolna Poland-
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References: Gale, B., Gale, P., & Gale, A. (2020). A Beachcomber's Guide to Fossils. University of Georgia Press. Miller, A., Gibson, M., & Boessenecker, R. (2021). A megatoothed shark (Carcharocles angustidens) nursery in the Oligocene Charleston Embayment, South Carolina, USA. Palaeontologia Electronica, 24(2), 1-19.
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Shark Vertebra (possibly Otodus/Carcharocles auriculatus or angustidens) from the New Bern Quarry in North Carolina
shark57 posted a gallery image in Vertebrates
From the album: Fossils
1.5 inch lamnid type shark vertebra in matrix from the New Bern quarry. Not sure if this is from the Oligocene River Bend Formation or the Eocene Castle Hayne Formation. If you think you recognize which formation this is from, leave a comment.-
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- castle hayne formation
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From the album: Fin Lover's South Carolina Finds
The missing cusp is a shame!-
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It looks different from Pulalius Vulgaris, has a more flattened carapace, and one claw is noticeably larger.
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- grays harbor county
- lincoln creek formation
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Finished up the 2nd Pulalius of my career. Overall I am pleased with it, but I have had to endure the great disappointment of having the claws cave in on me. On the left, just part of the claw broke off; hardly noticeable. On the right the whole propodus crumbled, a great tragedy considering how beautiful it was...you could see all the little nodules on it. Perhaps I have to reevaluate my desire to expose the whole front side of the claw...the fact they are so small and hollow tells me I may end up with this result over and over again if I keep being greedy.
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- lincoln creek
- oligocene
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