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Found 9 results

  1. Hello everyone, even though I haven't reached 35 fossils in my collection like I hoped for this year, I still managed to close 2023 with my 34th fossil! The one I'm going to show you today is, in fact, this 34th fossil, which is also the first mammal fossil I've ever owned Species: Merycoidodon sp. (Leidy, 1848) Size: ~3.0 cm long Age: 34-23 mya (Oligocene, stage indet.) Origin: South Dakota's Badlands (USA) About this fossil: a partial lower jaw of this genus, with four nicely preserved teeth. I personally like how, in this specimen, the matrix is still present, which helps to keep the two parts together and just makes the fossil look nicer
  2. Jawbone Discovery Suggests Modern Mammals Originated in The Southern Hemisphere By Clare Watson, Nature, ScienceAlert, 24 December 2022 Mammals island-hopped from Australia to colonise the world Claire Vince, Australian Museum, December 12, 2022 The open access paper is: Flannery, T.F., Rich, T.H., Vickers-Rich, P., Veatch, E.G. and Helgen, K.M., 2022. The Gondwanan Origin of Tribosphenida (Mammalia). Alcheringa: An Australasian Journal of Palaeontology, pp.1-14. Yours, Paul H.
  3. Marco90

    Merycoidodon culbertsoni

    From the album: My collection in progress

    Merycoidodon culbertsoni Leidy 1848 Location: Brule Formation, White River Badlands, South Dakota, USA Age: 34 - 23 Mya (Oligocene, Paleogene) Measurements: 3x6,5 cm Kingdom: Animalia Phylum: Chordata Subphylum: Vertebrata Class: Mammalia Subclass: Theria Superorder: Laurasiatheria Order: Cetartiodactyla Suborder: Tylopoda Family: Merycoidodontidae
  4. Marco90

    Mammuthus primigenius

    From the album: My collection in progress

    Mammuthus primigenius Blumenbach 1799 Location: Hatvan, Heves County, Hungary Age: 2,5 - 0,01 Mya (Pleistocene, Quaternary) Measurements: 7x15,5x14 cm Kingdom: Animalia Phylum: Chordata Subphylum: Vertebrata Class: Mammalia Subclass: Theria Superorder: Afrotheria Order: Proboscidea Suborder: Elephantiformes Family: Elephantidae
  5. Marco90

    Stephanorhinus sp.

    From the album: My collection in progress

    Stephanorhinus sp. Kretzoi 1942 Location: Bugyi, Pest County, Hungary Age: 2,5 - 0,01 Mya (Pleistocene, Quaternary) Measurements: 3,8x6,3 cm (tooth) Kingdom: Animalia Phylum: Chordata Subphylum: Vertebrata Class: Mammalia Subclass: Theria Superorder: Laurasiatheria Order: Perissodactyla Suborder: Ceratomorpha Family: Rhinocerotidae
  6. petoskeypicker

    Cretaceous Mammal Tooth Fossil ID Please

    Hi, I recently got this cretaceous mammal tooth from the Hell Creek formation, and I was wondering if you may help me find the scientific name of the species that it belonged to. I've done some research and learned that it was the premolar of a Multituberculate mammal. This order of mammals was diverse and there were many species. I think it might be one of the members of the Genus, Mesodma, Yet I could be wrong. I tried to narrow it down to the exact species, yet there are few examples to help me pinpoint to a certain Id. This tiny tooth is from Garfield County, Montana. it is from the late cretaceous period (~67 - 66 Ma). It measures approximately at 3/16" long by 3/16" wide (5 mm x 5 mm). It is thin and blade-like towards the top of the crown. The enamel has a grooved texture on the surface. The overall shape of crown resembles a saw blade. Hopefully I would be able to id. this specimen and to learn more about it. Feel free to ask me for better images.
  7. There's a new fossil ungulate-related article available online if anyone is interested: Nicolás R. Chimento; Federico L. Agnolin (2020). Phylogenetic tree of Litopterna and Perissodactyla indicates a complex early history of hoofed mammals. Scientific Reports 10 (1): Article number 13280. doi:10.1038/s41598-020-70287-5. The perissodactyl affinities of litopternans have been previously suggested by DNA-based analyses, but the paper by Chimento and Agnolin is the first morphology-based cladistic analysis to support a relationship between Perissodactylia and Litopterna. Moreover, some families assigned to the polyphyletic group "Condylarthra" are recovered as related to Perissodactyla, while the condylarth family Phenacodontidae is recovered along with Pleuraspidotheriidae as sister to Afrotheria (which includes elephants, aardvarks, hyraxes, elephant shrews, and sirenians).
  8. Gelfo, J.N., Goin, F.J., Bauza, N., and Reguero, M., 2019. The fossil record of Antarctic land mammals: commented review and hypotheses for future research. Advances in Polar Science. 30(3): 251-273 doi: 10.13679/j.advps.2019.0021 (open access) http://www.aps-polar.org/paper/2019/30/03/A190814000002 PDF: http://www.aps-polar.org/paper/2019/30/03/A190814000002/full Gelfo, J.N., López, G.M. and Santillana, S.N., 2017. Eocene ungulate mammals from West Antarctica: implications from their fossil record and a new species. Antarctic Science, 29(5), pp.445-455. (open access) https://www.researchgate.net/publication/318350360_Eocene_ungulate_mammals_from_West_Antarctica_implications_from_their_fossil_record_and_a_new_species https://www.researchgate.net/profile/Javier_N_Gelfo Yours, Paul H.
  9. Could belong to either Dasyurus viverrinus (Eastern Quoll), D. maculatus (Tiger Quoll) or D. geoffroii (Western Quoll).
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