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The Morrison Man | Tim

@themorrisonman.bsky.social
305 followers 259 following 114 posts

Biology student & Wikipedia editor with a love for the Morrison Formation, cetaceans and the natural world. Wants to study dead things some day. (he/him) Banner art by Joschua Knüppe

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j0nas-hakk3ns.bsky.social @j0nas-hakk3ns.bsky.social · 19/04/2026
Two versions of Cynthiacetus peruvianus. One bearing more a more whale-like oral setup, one more like terrestrial mammals.
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Petite Paleoartist | Sauriazoicillus @ppaleoartist.bsky.social · 01/04/2026
I was given the honour of illustrating the press release art of the new basal enisferan: Hex hepta! described by 初音&重音, (2026) (paper linked at the end of the 🧵) (1/4)
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Robert Boessenecker, Dr. of Whaleontology ™️ @coastalpaleo.bsky.social · 21/03/2026
🧵OK it's time for some catch up on recent papers in marine mammal paleontology. First up, out yesterday - bite marks on dwarf baleen whale and a beluga from the early Pliocene (3-4 myo) of Belgium, Lambert et al. 1/ www.app.pan.pl/article/item...
Partial cranium of the balaenid Balaenella brachyrhynus Bisconti, 2005 A. RBINS M.2344 (Kattendijk Formation, Lower Pliocene; Vrasenedok,
Belgium), right lateral view: photograph (A1), explanatory line drawing (A2), dorsal view: photograph (A3), explanatory line drawing (A4), posterodorsal
(A5) and anterior (A6) views. B. NMB 42001 holotype (Kattendijk Formation, Lower Pliocene, Waaslandkanaal, Belgium), 3D model in right lateral (B1)
and dorsal (B2) views provided for comparison. Grey shading indicates main parts covered with sediment; hatching, main break surfaces; red lines, shark
bites marks; small blue spot, shark tooth tip interpreted as belonging to the bluntnose sixgill shark Hexanchus griseus (Bonnaterre, 1788); red rectangles
in A, the location of detailed photos shown in Figure 3; red rectangles in B, the corresponding preserved part in RBINS M.2344. Bite mark types (TI–V)
follow Collareta et al. (2017a). Scale bars 100 mm.Fig. 4. A, C, D. Monodontid Casatia sp. (RBINS M.1922) from Kattendijk Formation, Lower Pliocene, Vrasenedok, Belgium. A. Partial cranium in dorsal
view (A1), detail of the rostrum base in dorsal view: photograph (A2), explanatory line drawing (A3). C. Fragment of the occipital shield in posterior view:
photograph (C1), explanatory drawing (C2). D. Proximal part of a single-headed rib in lateral view: photograph (D1), explanatory drawing (D2). B. 3D model
of the cranium of the Recent beluga Delphinapterus leucas Pallas, 1776 (USNM 305071) in dorsal (B1) and posterior (B2) views; to indicate the position of the
preserved parts (model downloaded from Phenome10k). Red lines, shark bites marks; small blue spot, shark tooth tip interpreted as belonging to the extinct
lamnid shark Carcharodon plicatilis (Agassiz, 1843). Bite mark types (TI–V) follow Collareta et al. (2017a). Scale bars A1, B, 100 mm; A2, A3, C, D, 50 mm.Reconstructed bite sequence corresponding to the set of parallel bite
marks observed on the occipital shield of the balaenid Balaenella brachyrhynus
Bisconti, 2005 (RBINS M.2344). The shark tooth best matching
the bite marks is the large (first) lower tooth of the bluntnose sixgill shark
Hexanchus griseus (Bonnaterre, 1788) (RBINS P.968, the Neogene of
Antwerp). The proposed sequence includes: (I) contact of the principal
cusp and at least five distal cusplets with the supraoccipital bone, followed
by a movement of the shark’s jaws towards the right side of the whale
cranium and at an angle with the tooth’s mesiodistal axis, (II) break of
the tip of the principal cusp, with the tip remaining stuck in compact bone
and related local broadening of the main bite mark, and (III) only the truncated
principal cusp retains a contact with the bone, together with the more
mesial part of the tooth crown, creating an additional mark posterior to
the mark made by the principal cusp. The cranium of the holotype of B.
brachyrhynus (NMB 42001) is shown in the same orientation to illustrate
the position of the bite marks (red rectangle) and the direction of the bite.
Large arrows, the proposed direction for the movement of the shark tooth;
small arrows, the orientation of the whale cranium; red lines, shark bite
marks; blue spot, broken shark tooth tip embedded in whale bone. Scale
bar for the cranium 100 mm; interpretive drawings not to scale.
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Mike Dickison @adzebill.bsky.social · 17/02/2026
Today I heard Paul Scofield, Senior Curator of Natural History at Canterbury Museum, give a public talk on moa resurrection and the museumʻs partnership with Colossal Biosciences (the “dire wolf” people).
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Ville Sinkkonen @villesinkkonen.bsky.social · 14/02/2026
Mammothssss
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Robert Boessenecker, Dr. of Whaleontology ™️ @coastalpaleo.bsky.social · 15/02/2026
#worldwhaleday Last week I was invited by @paleowin.bsky.social to give a lecture at her institution (SWOCC) on the evolution of whales. If you want to learn about about the origin of baleen and the importance of fossils from the Pacific Northwest, watch here: 🐬🦖🧪 www.youtube.com/watch?v=s7jg...
youtube.com
Fossil Whales of the Pacific Northwest and the Evolution of Baleen
YouTube video by Southwestern Oregon Community College (SWOCC)
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Ilari Pätilä @pelican-man.bsky.social · 23/01/2026
A simple portrait of Teratornis merriami, done in coloured pencils
A portrait of Teratornis merriami in coloured pencils against a blue backdrop.
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Darren Naish @tetzoo.bsky.social · 22/01/2026
#DinoConUK 2026 happens at the Hilton Birmingham Metropole on July 25th-26th and early indications are that it's gonna be huge. Tickets go on sale at our website TOMORROW. Be sure to get them early as we're anticipating a big turnout. www.dinocon.co.uk And follow @dinoconuk.bsky.social
dinocon.co.uk
DinoCon
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Cary Woodruff @doublebeam.bsky.social · 22/01/2026
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The Morrison Man | Tim @themorrisonman.bsky.social · 19/01/2026
This is Messapicetus gregarius from the Pisco Formation, a comically unserious animal. This is a longirostrine basal Ziphiid (beaked whale) that, alongside the more typical enlarged teeth in the lower jaw tip, preserves a functional toothrow in both jaws! (The crocodile is Piscogavialis!)
Diagram of the holotype skull of Messapicetus gregarius in dorsal and right lateral view, highlighting the large apical teeth. As figured in Bianucci & Collareta 2022
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Deep Sea Conservation Coalition @deepseaconserve.bsky.social · 17/01/2026
Today, the historic #HighSeasTreaty enters into force. The majority of the high seas is deep sea. As the COP process begins, the deep and the threats it faces must be at the center of implementation. #BBNJ #DefendTheDeep
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Michael Tripoli @triloboii.bsky.social · 17/01/2026
#Cenozoicpaleo2025 Meet Piscogavialis laberintoensis! #paleoart #sciart #gharial
Vector illustration of Piscogavialis laberintoensis, a marine gharial from Miocene Peru, swooping through the water towards the viewer. The long snouted crocodilian has large, forward facing eyes and narrow, needle like teeth. It is dark grey with a stark white and coppery underbelly, and dark stripes down its back and tail. Text reads: Piscogavialis laberintoensis. Camila Zamora-Vega, Pedro E. Romero, Maria Urbina et al. "Exceptional fossils from Peru and an integrative phylogeny reconcile the evolutionary timing and mode of Gavialis and its kin" Biol Lett (2025) 21 (8): 20250238 Aug 6 2025
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Krista Koeller @kristalerista.bsky.social · 06/01/2026
I just stumbled upon featherbase, a database of feather pictures from a bunch of bird species.🪶 So pretty! www.featherbase.info/zh/home
A picture of green jay feathers (Cyanocorax luxuosus). They are all lined up and organized: primaries, secondaries, coverts, tail feathers. Most of the feathers are gray with a green tip.
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Peter Nguyen @dptbirder.bsky.social · 13/12/2025
I can’t believe an albatross just walked right by me… 😭🪶
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Niao Collective @niaocollective.bsky.social · 13/12/2025
The 野史 (or maybe actual history?) is that the British released them from the Government House, where they were being kept, right before the Japanese invaded to give them a chance
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Alexander Lees @alexanderlees.bsky.social · 02/12/2025
Huge News from the Western Amazon: it's the year 2025 and we are still describing entirely new, strikingly-distinctive large-bodied bird species! Behold Tinamus resonans sp. nov. the Slaty-masked Tinamou mapress.com/zt/article/v... #Ornithology @tetzoo.bsky.social 🪶
Photo montage of Tinamus resonans sp. nov., a new species of tinamou from the montane forests of the Serra do Divisor, western Amazonia, Brazil. The species is distinguished by a unique combination of plumage pattern, vocal repertoire, and ecological characteristics, including a conspicuous dark slate facial mask, vivid rufous-cinnamon underparts, and a uniform brownish-gray back. Its vocalizations are remarkable, consisting of long and powerful songs that echo strikingly across the steep montane slopes, producing a characteristic resonant effect. The species was documented exclusively at higher elevations within a transitional zone between submontane and stunted forests, where the understory is densely structured by root mats. A preliminary population estimate, based on field detections and spatial extrapolation, suggests approximately 2,106 individuals restricted to the Serra do Divisor massif. Although no immediate anthropogenic pressures were observed within its range, the species may be highly vulnerable to climate change and to proposed infrastructure projects that threaten the integrity of this federally protected region. The discovery of T. resonans highlights the biological uniqueness of the Serra do Divisor, reinforces its status as a center of montane endemism, and underscores the critical importance of maintaining its long-term conservation.
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The Morrison Man | Tim @themorrisonman.bsky.social · 01/12/2025
Updates on Wisdom, the oldest known living bird!
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David Shiffman, Ph.D. 🦈 @whysharksmatter.bsky.social · 30/11/2025
Governments endorse support for greater protections for sharks, rays | AP News
apnews.com
Governments endorse greater protections for sharks amid concerns about overfishing
Governments have adopted greater protections for over 70 species of sharks and rays at an international wildlife trade conference.
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The Morrison Man | Tim @themorrisonman.bsky.social · 30/11/2025
Such gorgeous and weird birds!
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ipaintbirbs @ipaintbirbs.bsky.social · 29/11/2025
i like how the bark lines up with the bark :)
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Somniosus insomnus💤🦈 @somniosa.bsky.social · 28/11/2025
King of all the antlers. #Prehistoricplaneticeage #Megaloceros #ContinueThePrehistoricPlanet
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JuliArtWorld @juliartworld.bsky.social · 26/11/2025
It’s a bear. Finding the right rendering style for the fur took me a while, but I‘m so happy how it turned out. It’s one of the patreon stickers for this month and will also be a print later. #animalart #feralart
digital drawing in procreate. A grizzly bear sitting and holding a branch with blueberries.   He looks happy. Around him are more blueberries plants and a few birch trees. Two crows are sitting on either side on a tree. One has a berry in its beak another one squints at the blueberry branch.
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Natalia (娜塔莉) @wrycritic.bsky.social · 25/11/2025
I am running in the Palaeontological Association Council Elections, as an Early-Career Research Officer & Meetings Co-ordinator🏅If you are a member of the PalAss, and want me to be part of the council, maybe cast a vote or two? I'd love to fulfill the Early Career position 🤞
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Lizzie Harper Illustrator @lizzie-harper.bsky.social · 25/11/2025
Here's the second of the #botanicalillustration courses I'm teaching at #Cambridgeuniversity #botanicalgardens in the UK next year. This one is in May: www.botanic.cam.ac.uk/education-le... It's all about #illustrating #blue #flowers. Think #iris, #campanula, #bluebells....
Cut to white #sciart #botanicalillustration of one single #flower of the #bluebell #Hyacinthoides flower, showing pale stamens and recurved petals.Cut to white #naturalscienceillustration of the #Harebell #Campanula rotundifolia showing a specimen with a great many blooms at all angles, and linear as well as rounded leaves.Colour #diagram of the #structure of an #iris, #botanicalillustration #sciart #botany.  Showing stamens, ovaries, pistil, and the organisation of the petals / sepals.#Shetchbook sheet on the #Nootka #lupin showing the #flower spike, cross section of a flower, bud, roots, #seedpod, seedling, #habitsketch and seeds.  Cut to white #botanicalillustration
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Rosemary Mosco @rosemarymosco.com · 25/11/2025
As the year comes to an end, I'm reposting some of the comics I made this year, including this ridiculous thing.
A six-panel comic. In the first panel, a yellow warbler says "Hey so I'm going to go out on a limb here." In panels two through five, the warbler hops along a long branch against a blue sky with clouds. In panel 6, it stops at the end of the branch and sings.
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Rebecca Colesworthy @rcolesworthy.bsky.social · 25/11/2025
one of the coolest things about ChatGPT is how you can actually just never use it. you can fill your whole entire life with simply not once using it. it's incredible.
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Tits McGee @scientits.bsky.social · 26/10/2025
IMPORTANT
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Robert Boessenecker, Dr. of Whaleontology ™️ @coastalpaleo.bsky.social · 08/10/2025
#whalewednesday The spectacular early toothed whale Xenorophus sloanii from the Oligocene (~28 mya) of South Carolina! This is a critical transitional fossil, known from about a dozen skulls and partial skeletons. Read more about Xenorophus here on my blog: coastalpaleo.blogspot.com/2024/03/the-...
A black and white skeletal reconstruction of Xenorophus sloanii, and a pair of photos of the skull and neck vertebrae of the best known specimen in top and side view.
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Mark Witton @markwitton.bsky.social · 06/10/2025
Preview of my latest #paleoart piece: a baby bison flees the deadliest predator of Ice Age Europe. Harrowing, harrowing stuff.
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Emily Thomas 🦤🏳️‍🌈 @zhejiang0pterus.bsky.social · 03/09/2025
Huge azhdarchoid paper, at long last, ACCEPTED!!!! Prepare for some BIG insights!!!
Graphic of four azhdarchids (Quetzalcoatlus, Arambourgiania, Hatzegopteryx, and Cryodrakon) with the words "Azhdarchid Evolution". Art by @kiracuriee.bsky.social
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Joschua Knüppe @joschuaknuppe.bsky.social · 29/03/2025
In half an hour this years #paleostreamcon starts! Link to Twitch and the Disrcord server below!
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Joschua Knüppe @joschuaknuppe.bsky.social · 27/03/2025
This Saturday we will host once again #PaleostreamCon on Twitch and Discord! We are very exited for these talks and discussions!
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Darren Naish @tetzoo.bsky.social · 03/03/2025
Today's #ArtBoost: Australia-based Petite Palaeoartist aka Sauriazoicillus @ppaleoartist.bsky.social, whose work spans most palaeo subjects: plankton to #marinereptiles #dinosaurs and more. Recently published in landmark study on Australian theropods! Links at linktr.ee/ppaleoartist
Palaeoart marine scene showing big ammonite alongside thalattosuchian croc.Dark water palaeoart scene showing pliosaur pursuing much smaller ichthyosaur. Palaeoart depiction of Eryops above and below water.Screengrab of tweet discussing PP work appearing in Kotevski et al. technical paper, with art showing theropods in dispute.
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Joschua Knüppe @joschuaknuppe.bsky.social · 22/02/2025
#PaleostreamCon is upon us again! On the 29. of March we will hold it, on Discord, with a stream on Twitch! This year we want to experiment with new formats so we have a show-and-tell and poster session! Learn more and sign up below! #paleoart #paleontology
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Liam Elward Paleoart 🇵🇸 @paleobyliam.bsky.social · 12/02/2025
Since algorithms across various social media platforms are making it harder to see what you enjoy, here's a thread of #paleoart I think is underrated or a tad overlooked. Kicking things off with Sam Milkovits' azhdarchid portrait
Black and white digital painting of azhdarchid pterosaur head in profile. The tip of the beak has flaking keratin
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Robert Boessenecker, Dr. of Whaleontology ™️ @coastalpaleo.bsky.social · 06/12/2024
#artadventcalendar day 5&6 and #fossilfriday: watercolor paintings of the toothed baleen whale Coronodon havensteini (Oligocene, South Carolina) and a more ancestral archaeocete whale Zygorhiza kochii (Eocene, Mississippi). Each is 12x8". #paleontology🐡 #whaleontology #art #sciart #watercolor
Watercolor painting of a toothed whale skull in lateral view; the skull is light yellowish tan, has a long, slightly flattened snout, with single cusped teeth at the front of the mouth, and denticulate cheek teeth towards the back of the mouth; the enamel is dark brown. A few fractures exposing dark internal bone criss-cross the skull and lower jaw, which is somewhat open.Watercolor painting of a toothed whale skull in lateral view; the skull is light gray, has a long, somewhat cylindrical snout, with single cusped teeth at the front of the mouth, and denticulate cheek teeth towards the back of the mouth; the enamel is dark gray. A few fractures exposing dark internal bone criss-cross the skull and lower jaw, which is somewhat open.
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Mark Westneat 🐟 @mwestneat.bsky.social · 27/11/2024
This week I’m giving thanks for the Sling-Jaw Wrasse, and it’s amazing jaw #biomechanics! 🐟🦑🧪🌿
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Yohan Pochat-Cottilloux @yohanpochatcot.bsky.social · 26/11/2024
New #crocpaper alert ! 🐊🚨 Fossil crocodylomorphs lived in a wide diversity of environments compared to extant ones. This review (my first one !) focuses on those adaptations, from very early Triassic forms to crown group eusuchians ! doi.org/10.1002/ar.2... in @anatrecord.bsky.social
doi.org
A review of the non‐semiaquatic adaptations of extinct crocodylomorphs throughout their fossil record
Crocodylomorphs constitute a clade of archosaurs that have thrived since the Mesozoic until today and have survived numerous major biological crises. Contrary to historic belief, their semiaquatic ex...
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Joschua Knüppe @joschuaknuppe.bsky.social · 23/11/2024
All the dragons from the HTTYD stream. Detailed images below... 🧵 #paleostream #specevo #creaturedesign #sketches
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Olof Moleman @lordtrilobite.bsky.social · 20/11/2024
Need some more hadrosaur #paleoart goodness in December? Well, here is the #Hadvent calendar! @thysannia.bsky.social cooked up the idea and together we created this art prompt list. Feel like creating some hadrosaur art? You're welcome to join in the fun! #SciArt
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Neil Shubin @neilshubin.bsky.social · 20/11/2024
What do you do in Antarctica when the snow seals you inside your tents?? First, you dig out. Then you bake a cake. In Antarctica this tasted like fine pastry. At home it would be a doorstop. Deception Glacier, Antarctica Jan 2019. #antarctica #paleontology 💙🧪
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Joschua Knüppe @joschuaknuppe.bsky.social · 18/11/2024
Results from the #paleostream! Yuanyanglong, Romaleodelphis, Anaptomorphus and Armatites.
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Manusuchus @manusuchus.bsky.social · 13/11/2024
- A male Voay robustus rests with a female C. niloticus during the breeding season about 1000 years ago. He´s blissfully unaware that he is the last member of his species, but that's okay. What's extinction compared to the love of a lady and the warm rays of the sun on your face? -
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The Morrison Man | Tim @themorrisonman.bsky.social · 22/10/2024
Would you look at that, passed 200 followers! Thanks for stopping by everyone. As a little thank you, a teaser for whats to come soon:
An image from the 1980 description of Argentavis magnificens, showing the preserved bones of the skull.
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Dr Matt Dempsey @sketchy-raptor.bsky.social · 20/10/2024
So... video posting is a thing here now? Hey new followers. Have some T. rex. (Model, animation and effects by yours truly, environment assembled from PolyHaven and Smithsonian 3D assets)
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The Morrison Man | Tim @themorrisonman.bsky.social · 17/10/2024
Has anyone made a better paleontology feed than mine? Just checking! bsky.app/profile/did:...
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Lancian Idolatry @lancianidolatry.bsky.social · 17/10/2024
Skeletal reconstruction of Ankylosaurus magniventris, the iconic large armored dinosaur of Hell Creek
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The Morrison Man | Tim @themorrisonman.bsky.social · 17/04/2024
Been a while since I've looked here. What's new on BlueSky?
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