Ruairidh Duncan's Avatar

Ruairidh Duncan

@inxcetus.bsky.social

Whaleontology PhD candidate (Monash University/Melbourne Museum) and palaeoartist (of sorts) from Port Glasgow. πŸ––πŸ‹πŸŽοΈπŸ¦• Okay at some things. (he/him)

119 Followers  |  314 Following  |  2 Posts  |  Joined: 25.08.2023  |  1.4237

Latest posts by inxcetus.bsky.social on Bluesky

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They’ve only waited 120Ma.
A new glimpse into theropod diversity from Early Cretaceous Australia: megaraptorids, an unenlagiine, and for the first time, carcharodontosaurians.

Read it here: tandfonline.com/doi/full/10....

Artwork by Jonathan Metzger.

1/10

19.02.2025 19:51 β€” πŸ‘ 82    πŸ” 35    πŸ’¬ 2    πŸ“Œ 1
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An annotated checklist of Australasian fossil mammals Australasia has had a rich history of discovery of fossil mammals, with the first specimens collected within Wellington Caves, New South Wales and described by Richard Owen in 1838. Currently, a to...

New publication: taxonomy and classification of every fossil mammal species in Australasiaβ€”Wallace Line to New Zealand!

www.tandfonline.com/doi/full/10....

10.02.2025 01:34 β€” πŸ‘ 20    πŸ” 7    πŸ’¬ 1    πŸ“Œ 1
Photographs of the skull and mandible of Cochimicetus convexus in dorsal view - like other baleen whales, the skull resembles a surfboard in shape. Unlike modern species, the blowhole is located very far anteriorly and there are very large temporal fossae.

Photographs of the skull and mandible of Cochimicetus convexus in dorsal view - like other baleen whales, the skull resembles a surfboard in shape. Unlike modern species, the blowhole is located very far anteriorly and there are very large temporal fossae.

Photographs of the skull and mandible of Cochimicetus convexus in ventral view - the palate is broadly exposed here and is long and flat.

Photographs of the skull and mandible of Cochimicetus convexus in ventral view - the palate is broadly exposed here and is long and flat.

Cladogram or evolutionary tree for the study, showing eomysticetid whales, including Cochimicetus, as a single clade. toothed baleen whales are positioned further down the tree, along with dolphins and an archaeocete.

Cladogram or evolutionary tree for the study, showing eomysticetid whales, including Cochimicetus, as a single clade. toothed baleen whales are positioned further down the tree, along with dolphins and an archaeocete.

πŸ¬πŸ¦– New paper by Cedillo-Avila et al. in Palaeo-Electronica: newly named eomysticetid baleen whale from the Oligocene of Baja California, Cochimicetus convexus! Elated to see another eomysticetid named from the Pacific coast. Read it here: palaeo-electronica.org/content/in-p...

06.01.2025 18:37 β€” πŸ‘ 16    πŸ” 4    πŸ’¬ 0    πŸ“Œ 0
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New Artwotk - " Migration "

12.12.2024 23:38 β€” πŸ‘ 123    πŸ” 22    πŸ’¬ 2    πŸ“Œ 0
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seafood.

05.12.2024 22:07 β€” πŸ‘ 1006    πŸ” 225    πŸ’¬ 10    πŸ“Œ 3
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Variation in whale (Cetacea) inner ear anatomy reveals the early evolution of β€œspecialized” high‐frequency hearing sensitivity Our findings support sensitivity to low-frequency sound in the archaeocete Zygorhiza kochii and an early toothed mysticete cf. Aetiocetus. Narrow-band high-frequency hearing was present in Oligocene ...

I have a new paper out on the evolution of hearing in toothed whales! It looks like a narrow range of high-frequency auditory sensitivity in some living dolphins and porpoises may be an ancestral physiology rather than novel specializations in select groups.

onlinelibrary.wiley.com/doi/10.1111/...

04.12.2024 02:14 β€” πŸ‘ 98    πŸ” 26    πŸ’¬ 5    πŸ“Œ 1
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Thrilled to have been a co-author and palaeoartist on my good friend Jake Kotevski's first PhD chapter (who does not use Bluesky). Always nice to have a reason to draw some theropod dinosaurs πŸ¦–

doi.org/10.1016/j.cr...

03.11.2023 03:15 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

All cetaceans are classified as "even-toed ungulates" (Order: Artiodactyla), while horses are "odd-toed ungulates" (Order: Perissodactyla).

That means a giraffe is more closely related to a narwhal (58 MYA) than to a zebra (76 MYA).

(diagram by K. L. Mariott)

07.09.2023 01:35 β€” πŸ‘ 126    πŸ” 36    πŸ’¬ 6    πŸ“Œ 2
https://doi.org/10.1111/mms.13067 Wiley Online Library requires cookies for authentication and use of other site features; therefore, cookies must be enabled to browse the site. Detailed information on how Wiley uses cookies can be fo...

New paper by my colleagues and I on the reproductive anatomy of a leopard seal 🦭

Leopard seal reproduction is mostly unknown. This note from a Monash Uni dissection discusses the importance of morphology in providing some clues.

Open access paper here:
doi.org/10.1111/mms....

04.09.2023 14:21 β€” πŸ‘ 4    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0
Fucaia goedertorum, a small toothed baleen whale from the Pacific northwest around 30-25 million years ago. Its mouth be agape and it be looking chuffed.

Fucaia goedertorum, a small toothed baleen whale from the Pacific northwest around 30-25 million years ago. Its mouth be agape and it be looking chuffed.

A humpback whale with its mouth open in the act of lunge feeding, with the throat expanding due to incoming water. Best animal, fight me.

A humpback whale with its mouth open in the act of lunge feeding, with the throat expanding due to incoming water. Best animal, fight me.

A Victorian polar megaraptor walking towards the viewer. Reconstructed as a dark brown, large clawed meat eating dinosaur with beige stripes increasing in prominence from the torso to the tail and with speculative red head crests.

A Victorian polar megaraptor walking towards the viewer. Reconstructed as a dark brown, large clawed meat eating dinosaur with beige stripes increasing in prominence from the torso to the tail and with speculative red head crests.

A porgerbear chimeara, a combination of: puffin, polar bear, tyrannosaur, beluga, and porg (those feathered, gremlin-looking jellybeans from the sequel trilogy)

A porgerbear chimeara, a combination of: puffin, polar bear, tyrannosaur, beluga, and porg (those feathered, gremlin-looking jellybeans from the sequel trilogy)

Hello new social media hellscape! I'm Ruairidh, a palaeontology PhD candidate and palaeoartist (of sorts) at Monash University and Melbourne Museum studying toothed baleen whales. I like DS9 and making weird animals out of other animals. Please share all the cool science and art with me! πŸ‹πŸ––πŸ¦–

04.09.2023 12:31 β€” πŸ‘ 12    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

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