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Showing results for tags 'paleogene'.
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As Larry familiarizes himself with how to attach photos to his posts, I will be posting for him. Larry is a humble collector of mammals but he is very experienced. He is one of the rare mammal collectors with knowledge of Eocene-Pleistocene groups. Most collectors specialize in Oligocene or Miocene-Pleistocene of North America but he knows a wide variety of forms specializing in ungulates (hoofed mammals of the Perissodactyla and Artiodactyla. He's hunted from California to Nebraska and South Dakota to Texas. The first specimen he'd like to share with the forum is a 2-tooth max
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Odd Carcharhiniform tooth from the Late Oligocene of South Carolina
siteseer posted a topic in Fossil ID
I was looking at some of my Oligocene teeth and took a little extra time with this one. I don't remember when I got it. I've bought from and traded with a few South Carolina dealers and collectors over the years. This one is from the Late Oligocene Chandler Bridge Formation. It measures about 11mm along the slant with fine serrations to the tip. I think it's an early Carcharhinus tooth but would like to hear from other collectors on this one. I was blanking on some names but I've got the call out to some of you. The Late Oligocene is a time before Carcharhinus became the wild -
I found this weird rock around limestone of Paleogene age near Khurais east of Riyadh Saudi Arabia. is it a agate? and how does it form. thank you all for your time!
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Hello! I found these shells in a Paleogene area near Khurais, Saudi Arabia and I was wondering if these species could confirm that they are truly Paleogene aged. I was also wondering why they look rusty colored. thank you for your time!
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Hello! I found these fossils along with other shells and sorts in a Paleocene area near the city Khurais which is 200km east of Riyadh in Saudi Arabia. The area is known for shark teeth and fish bones. what could these barbed bones be?
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From the album: My collection in progress
Mastigusa sp. Menge 1854 Location: Sambian Peninsula, Kaliningrad Oblast Age: 56-34 Mya (Eocene, Paleogene) Measurements: 2,1x1,8 cm (amber), 5 mm (length of spider) Kingdom: Animalia Phylum: Arthropoda Subphylum: Chelicerata Class: Arachnida Order: Araneae Suborder: Opisthothelae Family: Hahniidae -
From the album: My collection in progress
Machilidae unidentified sp. Grassi 1888 Location: Rivne Oblast, Ukraine Age: 56-34 Mya (Eocene, Paleogene) Measurements: 2,8x2,5 cm (amber), 1,7 cm (length of bristletail) Kingdom: Animalia Phylum: Arthropoda Subphylum: Hexapoda Class: Insecta Subclass: Monocondylia Order: Archaeognatha Suborder: Machilida Family: Machilidae -
From the album: My collection in progress
Lithobiidae unidentified sp. Newport 1844 Location: Sambian Peninsula, Kaliningrad Oblast, Russia Age: 56-34 Mya (Eocene, Paleogene) Measurements: 1,9x1,1 cm (amber), 1,1 cm (length of centipede) Kingdom: Animalia Phylum: Arthropoda Subphylum: Myriapoda Class: Chilopoda Order: Lithobiomorpha Family: Lithobiidae -
From the album: My collection in progress
Striatolamia macrota Agassiz 1843 Location: Morocco Age: 56-48 Mya (Ypresian, Eocene, Paleogene) Measurements: 1,8x2,8 cm Kingdom: Animalia Phylum: Chordata Subphylum: Vertebrata Class: Chondrichthyes Subclass: Elasmobranchi Superorder: Selachimorpha Order: Lamniformes Family: Odontaspididae -
From the album: TEETH & JAWS
Plagiolophus (and sister taxa) are palaeotheres, a successful and variable family of perissodactyls (horses, rhinos, tapirs, et. al.) in the Eocene of Western Europe. Not true horses, palaeotheres may be the ancestors of horses. Plagiolophus represents one genus of palaeothere, extinct since the Oligocene. Plagiolophus minor, a browser, was the only member of its family to survive more than fleetingly the mammalian faunal turnover, the "Grande Coupure," which occurred during the earliest Oligocene in Europe. La Debruge is one of about 15 terrestrial faunas (fossil remains of all kinds: pl© Harry Pristis 2014
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I'm finally getting around to posting pictures of this Moroccan shark tooth, which I believe is either a transitional Otodus obliquus or a transitional Palaeocarcharodon orientalis. My original thought was Otodus but @Al Dente flagged in the mailbox thread a few weeks ago that it might be Palaeocarcharodon instead. Any thoughts on this one? The tooth measures 49 mm on the slant and is 39 mm wide across the root.
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Balkanatolia: the forgotten microcontinent, the Grande Coupure, and European mammal evolution
Oxytropidoceras posted a topic in Fossil News
Balkanatolia: the forgotten continent that sheds light on the evolution of mammals, CNRS News, February 22, 2022 Balkanatolia: the forgotten continent that sheds light on evolution of mammals. UPI, February 22, 2022 Scientists Discover the Long-Lost Continent ‘Balkanatolia’ The landmass existed 40 million years ago and may have facilitated the migration of Asian mammals into Europe. Becky Ferreira, Vice, February 23, 2022 the paper is: Licht, A., Métais, G., Coster, P., Ibilioğlu, D., Ocakoğlu, F., Westerweel, J.,-
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- palaeotheres
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***Need professional help with Paleogene/Eocene shark teeth identification***
Morte posted a topic in Fossil ID
Hello everyone!)) Need help of paleontologists and paleoichthyologists with identification of eocene shark teeth from Russia. I'm not professional, just a fan and rooky, so I choose possible species options for every tooth, according to books and scientific publications which I have. Hope I make right something at least. Be glad and thankful if somebody will help me figure it out)). -
Paleobiology of the Upper Cretaceous-Lower Paleogene Trans-Saharan Seaway, Mali (open access publication)
Oxytropidoceras posted a topic in Fossil News
O'Leary, M.A., Bouaré, M.L., Claeson, K.M., Heilbronn, K., Hill, R.V., McCartney, J.A., Sessa, J.A., Sissoko, F., Tapanila, L., Wheeler, E.A. and Roberts, E.M., 2019. Stratigraphy and paleobiology of the Upper Cretaceous-Lower Paleogene sediments from the Trans-Saharan Seaway in Mali. (Bulletin of the American Museum of Natural History, no. 436). http://digitallibrary.amnh.org/handle/2246/6950 Warning: the low-resultion PDF is about 204 MB and the high-resolution PDF is about 383 MB. Yours, Paul H.- 2 replies
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An article on the Cretaceous-Eocene Trans-Saharan Seaway in "Natural History" magazine
siteseer posted a topic in Fossil Literature
In the September 2021 issue of "Natural History" magazine, there's an article, "The Trans-Saharan Seaway," by Devin Reese, Robert V. Hill. and Leif Tapanila. Anyone who collects fossil shark teeth knows Morocco and other parts of northern Africa were submerged by an inland sea as recently as the early-middle Eocene but there was also an arm of the sea that cut south all the way from what is now Algeria to what is now the Gulf of Guinea. The article summarizes the work of a team of geologists and paleontologists across a ten-year period in the early 2000's. It reviews a number of fossil find -
Serious, experienced replies, please! This 0.5 cm long object is attached to a broken coprolite from the Eocene/Oligocene of NW Nebraska. Trying hard to figure it out. Wrong twexture for a tooth and it doesn't look like a seed, either. I have a guess, but right now a guess is all I have. Any coprolite specialists out there? I know the pictures could be better, but I don't have a microscope out here in the field.
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On Tuesday, I made a trip back to the East Texas creek where I had found micro teeth last month. This creek is a Kincaid Formation outcrop. I had found the one and only productive area there just before I had to leave last time, so wanted to explore it better. Rain threatened the entire time I was there Tuesday, but it didn't really rain hard until I had gotten back home. Unlike my last time there, I found very little soft matrix on top of the limestone this time. At first, I wondered if it was just because our dry spell lately had hardened everything, but the more I explored, the
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Adventures in the White River Badlands of Colorado
Opabinia Blues posted a topic in Fossil Hunting Trips
I just got back from an amazing and very fruitful week of fossil collecting on the White River Formation in northeastern Colorado. The White River Formation is a very easy and fun rock unit to collect vertebrate fossils on. The White River Formation was deposited during the very latest Eocene and the early Oligocene, though the faunal diversity in the areas I was collecting on suggest it was laid down during the Orellan North American Land Mammal Age, which centers on around 33 million years ago during the Rupelian age of the Oligocene Epoch. I am very lucky to have a grand uncle- 24 replies
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The Boltysh impact structure: An early Danian impact event
Oxytropidoceras posted a topic in Fossil News
The dinosaurs didn’t go out the way you think they did — study The paper is: Pickersgill, A.E., Mark, D.F., Lee, M.R., Kelley, S.P. and Jolley, D.W., 2021. The Boltysh impact structure: An early Danian impact event during recovery from the K-Pg mass extinction. Science Advances. Vol. 7, no. 25, eabe6530 DOI: 10.1126/sciadv.abe6530 Yours, Paul H. -
There is a new publication on fossil peccaries from North America now available online, if anyone is aware: Prothero, D.R., 2021. The systematics of North American peccaries (Mammalia: Artiodactyla: Tayassuidae). New Mexico Museum of Natural History and Science Bulletin 85: 1–76. https://books.google.com/books?id=fJcwEAAAQBAJ&newbks=0&hl=en&source=newbks_fb This publication provides a comprehensive overview of fossil peccaries from North America, and also erects three new genera, of which two were assigned to Prosthennops.
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K-Pg Impact Spurred the Evolution of the Modern Rainforest
Oxytropidoceras posted a topic in Fossil News
How the Dinosaur-Killing Asteroid Spurred the Evolution of the Modern Rainforest New evidence from fossil plants shows today’s South American rainforests arose in the wake of Earth’s fifth mass extinction. Smithsonian Magazine Prior to the Chicxulub impact, rainforests looked very different Plant fossils from Colombia show a turnover from conifers to today's forests. by Doug Johnson, Ars Technica, April 1, 2021 Paper Carvalho, M.R., Jaramillo, C., de la Parra, F. et al. 2021. Extinction at the end-Cretaceous and the origin of modern- 1 reply
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I found this on online and am considering on getting it. Also, I'm new to online and don't know much about it.
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Good evening. I need your help. This bone was found in Paleogene sandstones (not redeposition, bedrock) next to a petrified opalized tree. Replacement is visible on the break. Who do you think it could belong to? Thanks! Have a nice evening
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L1: 7.6 cm L2: 6.2 cm W: 6.0 cm
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I propose to show us your Cenozoic corals. It is not necessary that it are identified although it would be better. What is necessary is that it are dated. Ok? Come on, I'll start. Cyathoseris castroi (Mallada, 1887) Lutetian South Pyrenean basin
