Cadurcodon ardynensis was an odd-toed ungulate that lived in what is now Mongolia during the late Eocene, about 37-34 million years ago.
It was around 2m long (6'6") and, despite its very tapir-like appearance and lack of horns, it was actually closer related to modern rhinoceroses – it was part of a group of early rhino-cousins known as amynodontids, which convergently evolved both hippo-like and tapir-like lifestyles.
Cadurcodon was the most tapir-like of the tapir-like amynodontids, with a short deep skull and retracted nasal bones that indicate it had a well-developed prehensile trunk. Males also had large tusks formed from their upper and lower canine teeth, which may have been used for fighting each other.
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References:
Averianov, Alexander, et al. "A new amynodontid from the Eocene of South China and phylogeny of Amynodontidae (Perissodactyla: Rhinocerotoidea)." Journal of Systematic Palaeontology 15.11 (2017): 927-945. https://doi.org/10.1080/14772019.2016.1256914
Громова, В. [Gromova, V.] Болотные носороги (Amydontidae) Монголии. [Swamp rhinoceroses (Amynodontidae) of Mongolia.] Trudi Paleontol. Inst., Akad. Nauk SSSR 55:85-189 (1954) https://www.geokniga.org/books/13983
Prothero, Donald R., and Robert M. Schoch. Horns, tusks, and flippers: the evolution of hoofed mammals. JHU Press, 2002. http://www.rhinoresourcecenter.com/pdf_files/141/1415340780.pdf
Wall, William P. "Cranial evidence for a proboscis in Cadurcodon and a review of snout structure in the family Amynodontidae (Perissodactyla, Rhinocerotoidea)." Journal of Paleontology (1980): 968-977. https://www.jstor.org/stable/1304363
Wikipedia contributors. “Amynodontidae.” Wikipedia, 17 Dec. 2023, https://en.wikipedia.org/wiki/Amynodontidae
Wikipedia contributors. “Ergilin Dzo Formation.” Wikipedia, 12 Feb. 2024, https://en.wikipedia.org/wiki/Ergilin_Dzo_Formation
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Various scaled reptiles. The life of vertebrates. 1962.
Internet Archive
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I’m sorry, but some of y’all really need to see this…
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some illustrations about Meganeura and how much we know about its anatomy based on fossil fragments and close relatives
links
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Bat and human arm bones~
I figured it’d be something to help a child visualise the similarities
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NEW PRINT!
A fantastical, retro-futuristic laboratory for black hole research. Originally created for The Institute for Advanced Study – The Institute Letter.
The graphics on the small screens represent real black hole characteristics: Kerr black holes, donut-shaped accretion disks, gravitational effects, binary systems & more.
Credit: Olena Shmahalo for The Institute for Advanced Study
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Repostober 7: He stretch his leggy out real far! Anchiornis from 2018, a piece from grad school.
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The mancallines were a lineage of flightless semi-aquatic birds closely related to auks. Known from the Pacific coasts of what are now California and Mexico, between about 7.5 and 0.5 million years ago, they convergently evolved a close resemblance and similar lifestyle to both the recently-extinct North Atlantic great auk and the southern penguins.
Miomancalla howardi here lived in offshore waters around southern California during the late Miocene (~7-5 million years ago). The largest of the mancallines, it just slightly beat out the great auk in size – standing around 90cm tall (~3') and weighing an estimated 5kg (11lbs).
Like great auks and penguins it would have been a specialized wing-propelled diver, swimming using "underwater flight" to feed on small bait fish. It probably spent much of its life out at sea, probably only returning to land to molt and breed.
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Fossils of fish fins, showing their evolution. La terre avant le déluge. 1874.
Internet Archive
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It’s Cactus garden time for the #juneinbloom2022
This one is quite personal because it’s a bit representative of the region where I live in, La palma, a small heart shaped island from the Canary Islands. Its what we call a”tunera” a prickly pear cactus in bloom and with some fruits (yummy), and an endemic butterfly called Vanessa vulcania or the Canary red admiral.
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