Toothy Grin
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toothygrinart.bsky.social
Toothy Grin
@toothygrinart.bsky.social
70 followers 210 following 160 posts
I make palaeontology-themed merchandise including greeting cards, badges and t-shirts. Follow for product updates and random palaeo-related stuff. Buy something at toothygrin.com.au
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Reposted by Toothy Grin
reddirtpalaeo.bsky.social
@jorgoristevski.bsky.social just alterted me to this absolutely horrible page of false AI slop being passed off as an educational page on the Queensland Museum website.
www.museum.qld.gov.au/learn-and-di...

1/n
Drop Croc - Animals of Queensland | Queensland Museum
The Drop Croc is a purported species of prehistoric crocodile that scientists say once inhabited the lush forests of ancient Queensland. Unlike its modern aquatic relatives, the Drop Croc is believed ...
www.museum.qld.gov.au
November 17, 2025 at 12:50 AM
Reposted by Toothy Grin
ausarchosaur.bsky.social
A couple more reptiles I want to appear in PhP Ice Age are Paludirex and Quinkana. Megalania and the saltwater crocodile weren’t the only large predatory reptiles of Pleistocene Australia.

Here I’m going to focus on Paludirex.
https://pmc.ncbi.nlm.nih.gov/articles/PMC7759136/ Photo by Mark Marathon: https://commons.wikimedia.org/wiki/File:Quinkana_timara_skull.jpg#mw-jump-to-license
November 16, 2025 at 1:54 PM
toothygrinart.bsky.social
If you can't get any aDNA, use collagen instead. I wonder if this technique might help resolve the taxonomy of suggested "dwarfed" species like Macropus titan/giganteus or Sarcophilus laniarius/harrisii?
November 16, 2025 at 12:35 PM
Reposted by Toothy Grin
trigonotarbida.bsky.social
Well this is as done as it's going to get. Tiliqua frangens, a megafauna skink from pleiocene and pleistocene australia with large pointy scales feeding on spring wildflowers. #palaeoart #palaeoart #reptile #lizard
Digital illustration of a brown skink with white markings with large pointy scales, it is eating wildflowers and there are vegetated sand dunes in the background.
November 15, 2025 at 5:13 PM
Reposted by Toothy Grin
isaacarkerr.bsky.social
doi.org/10.1098/rsos...
new paper out now with @royalsociety.org on limb structure & function of the #fossil #kangaroo, Dorcopsoides fossilis, from central Australia. The oldest known macropodine (subfamily of all but one of living roos) & a fun glimpse into the great Late Miocene kangaroo radiation
November 12, 2025 at 6:26 AM
Reposted by Toothy Grin
arminreindl.bsky.social
New paper describing the eggshells likely belonging to the early mekosuchine Kambara, possibly indicating a different incubation method relative to modern crocodiles
doi.org/10.1080/0272...
Australia’s oldest crocodylian eggshell: insights into the reproductive paleoecology of mekosuchines
Alongside large madtsoiid snakes, the largest known lizards, thylacoleonid marsupials and a range of other terrestrial carnivores, the now extinct mekosuchine crocodylians were significant predator...
doi.org
November 11, 2025 at 8:49 PM
toothygrinart.bsky.social
Croc eggshell from Tingamarra!
www.tandfonline.com/doi/full/10....
Australia’s oldest crocodylian eggshell: insights into the reproductive paleoecology of mekosuchines
Alongside large madtsoiid snakes, the largest known lizards, thylacoleonid marsupials and a range of other terrestrial carnivores, the now extinct mekosuchine crocodylians were significant predator...
www.tandfonline.com
November 11, 2025 at 9:13 PM
Reposted by Toothy Grin
drongojackburb.bsky.social
Some tideous studies for an upcoming illustration of a certain fragmentary Wakaleo Species, perhaps the youngest of them...

Credit to gtg141 on DeviantArt for the W. schouteni and W. oldfieldi skull reconstruction as helpful guides to doing my own reconstruction of W. alcootaensis.
#sciart
November 10, 2025 at 1:00 PM
toothygrinart.bsky.social
I'd like to nominate "Diprotodudes" as word of the year.
ausarchosaur.bsky.social Ausarchosaur @ausarchosaur.bsky.social · 8d
I HEREBY CHALLENGE ALL RIPPER LIZARDS WITHIN A FIVE MILE RADIUS TO MORTAL COMBAT!!!

(…And any Diprotodudes)
November 10, 2025 at 12:21 PM
toothygrinart.bsky.social
The news today is making me think of this amended display in the biology building at UNSW.
November 7, 2025 at 9:31 PM
Reposted by Toothy Grin
trigonotarbida.bsky.social
this has to be one of the cutest animals ever
Figure from https://royalsocietypublishing.org/doi/10.1098/rspb.2023.0704 showing silhouette containing some material of Tiliqua frangens, an extinct megafauna skink
November 7, 2025 at 10:03 AM
toothygrinart.bsky.social
DROP BEAR!!
Screen-grab from the Prehistoric Planet: Ice Age preview. Thylacoleo leaps from a Eucalyptus tree, likely aiming for an unseen prey animal.
November 6, 2025 at 9:30 PM
Reposted by Toothy Grin
drongojackburb.bsky.social
(Recent art) Ceratodus nargan Illustration!

Ceratodus is a wide spread prehistoric lungfish species that is related to the extant queensland lungfish. Here lies a species in the Early Cretaceous of Southern Victoria, Australia, in the Euremella formation.

#paleoart #sciart #illustraation #fishart
November 5, 2025 at 7:32 AM
Reposted by Toothy Grin
serpenillus.bsky.social
One of the largest temmnospondyls ever to exist: the gigantic Koolasuchus was also the last non-lissamphibian temnospondyl to exist. It survived into the Early Cretaceous of Australia when all other stereospondyls were long gone

#temnospondyls #paleoart
Illustration of Koolasuchus next to the silhouette of a ca. 1.8 m tall human
November 3, 2025 at 4:49 PM
Reposted by Toothy Grin
emilyart.bsky.social
Leaellynasaura dinosaur illustration for James Stryker's paleoart project.

#Dinosaur #Paleoart #Leallynasaura #Paleoillustration
A mother Leaellynasaura and her two small chicks standing in a clearing with melting snow in the background and foreground. There are Wollemia trees topped with snow being backlit by the aurora australis. The dinosaurs are fully feathered and have a mostly speculative appearance with snow camouflage grey and white stripes.
October 29, 2025 at 4:53 PM
Reposted by Toothy Grin
andrejpaleo.bsky.social
The story of extinctions and population depletions in the late Quaternary is a complex one. Climate and humans interference in shaping diversity is always convoluted. Here is the story from the Australian lizards' point of view 👇
www.cell.com/current-biol...
🧪 ⚒️ #Paleobio #Macroecology
Predictors of genetic diversity and correlations with habitat suitability and altitude
October 30, 2025 at 9:15 AM
toothygrinart.bsky.social
Coming to CAVEPS next month? Get your conference shirts from the Toothy Grin online shop!
www.toothygrin.com.au/shop/categor...
The logos of Toothy Grin (a stylised theropod skull that looks chuffed) and CAVEPS 2025 (a stack of reconstructed prehistoric animals from South Australia, namely the plesiosaur Umoonasaurus, flamingo Phoeniconotius, lungfish Metaceratodus and echidna Megalibgwilia) are joined by a “+”, indicating a collaboration. Below, an assortment of items of apparel are arrayed, each with a form of the conference logo printed on it.
October 28, 2025 at 12:39 AM
toothygrinart.bsky.social
Replica skeleton of Baru iylwenpeny on display at the Queensland Museum. This is part of the new Croc! exhibit. #MuseumCore #CrocQM
Photo of the 3D-printed skull and anterior skeleton of a huge crocodilian. The jaws are relatively short and deep (by croc standards), and the teeth are very robust. In short, it is a head made for chomping.
October 28, 2025 at 12:34 AM
toothygrinart.bsky.social
Prototype greeting card, featuring Psychrolutes (A.K.A. “blobfish”).
A photo of a greeting card sitting on a bookshelf. The card features two images: at the top, a living blobfish looking chuffed. Below, a dead blobfish that has suffered catastrophic decompression, creating its internet-famous appearance of misery. The upper image is labelled “Sunday” while the lower is labelled “Monday”.
October 28, 2025 at 12:18 AM
Reposted by Toothy Grin
drongojackburb.bsky.social
(Old Art) Leaellynasaura Illustration!

I haven't posted this here yet, so just gonna show it here.

I have depicted a "Months of Light Seasons Morph" (Dark Variant) and a "Months of Dark Seasons Morph" (Light Variant), Inspired by old illustrations with different morphs in books. #sciart #paleoart
October 25, 2025 at 11:14 AM
Reposted by Toothy Grin
andrejpaleo.bsky.social
Orca sized lamniform sharks from the Aptian of Australia:
"Our results show that mega-body size is an ancient lamniform trait, with the Australian cardabiodontid being around 6–8 m and over 3 tons."
TL estimates for Cretaceous lamniforms.
October 26, 2025 at 8:51 PM
Reposted by Toothy Grin
lizzysteell.bsky.social
🦴New fossil alert🦴 Introducing Aeviperditus gracilis, a possible bowerbird from the Miocene of New Zealand. My first fossil description!

Artwork by the amazing Sasha Votyakova (Te Papa CC-BY-SA) (🧵1/11)
An artist's reconstruction of the St Bathans bowerbird. A small bird with long feet, coloured in dark olive green and yellow plumage, with a bright yellow eye. It's holding a thin twig in it's thick, sturdy beak and the bird is perched on a stick.
October 23, 2025 at 8:55 AM
Reposted by Toothy Grin
kennytravouillon.bsky.social
theconversation.com/hunters-or-c...
Hunters or collectors? New evidence challenges claim Australia’s First Peoples sent large animals extinct
Australia doesn’t have any ‘kill sites’. In fact, there’s no hard evidence people hunted the megafauna.
theconversation.com
October 22, 2025 at 2:40 AM
Reposted by Toothy Grin
swarmofthoughts.bsky.social
Red rocks of McGrath´s flat contain countless #fossils of the 11 MYA wet Eucalypt forest, probably not unlike this Watagan Ranges forest, near Newcastle, AU. New paper by colleagues from AusMus in Sydney explain how this diversity of forest fossils was preserved tinyurl.com/5xzjrtnr 🦖
October 21, 2025 at 8:38 PM
Reposted by Toothy Grin
trigonotarbida.bsky.social
Another from early last year of Progura campestris, a pleistocene megapode bird, encountering a monitor lizard. This one was inspired by getting called at by a malleefowl when I accidentally got too close to its nest 😅. #paleoart #palaeoart
Progura campestris, a large pleistocene megapode bird calls to intimidate a dark grey and white striped varanid who is approaching where she has just buried her eggs. The ground is orange and there are some flowering bushes visible.
October 20, 2025 at 2:54 PM