Birb - Casual Account

A weird little paravian, RT's stuff about biology.

[Michael Deak @deak_michael]

We lost another one. https://t.co/5YZUKJ45YM

[Fossil Crates 🦖🦕 @Fossilcrates]

#Xiphactinus swallowing a #Gillicus sculpt at the GeoCenter Mons Klint in Denmark.

We enjoyed the colors and the dynamism and had a great time at the museum, which pays homage to the amazing fossils found outside its doors at the base of sheer cliffs.

#FossilCrates

[TitanusPixel55 - Commissions open! @TPixel55]

I'm back! Not with paleoart this time but with a modern frog: Calyptocehalella gayi! An endemic living fossil of Chile. It's the first time I draw a frog, so this was mostly for practice.

[Nick Volpe @nvolpewild]

BIG TOAD . COM 🐸🤎

[Ausarchosaur @ausar_the]

A new genus of dasyurid Miyumba chrisdickmani (Marsupialia, Dasyuridae) from the Early Miocene deposits of the Riversleigh World Heritage Area, north-western Queensland
https://t.co/gvcF2LjBTs

[ミロ@古生物図鑑の人 @mirokunn2224]

#Cambrian #illustration #paleoart #イラスト

A brand-new face described in 2025! This radiodont was named after the Japanese monster “Mothra” for its moth-like appearance!

[DinoCon @DinoConUK]

#DinoConUK

[The Anatomical Record @AnatRecord]

New research on worm lizard Trogonophis wiegmanni shows skull & jaw shape change predictably as individuals grow. 3D GM revealed links b/w size & cranial morphology, suggesting ontogenetic allometry is a common pattern in Amphisbaenia
Hohl et al.: https://t.co/STOmVt5FxX

[Andrej Spiridonov @AndrejSpiridon4]

"appearance of the new apex predator cf. Saurosphargidae relatively soon after the [P\Tr] extinction event coincides with the reappearance of predatory cephalopods and precedes the full ecological and taxonomic recovery of benthic groups in the Dolomites"
https://t.co/nyF5zsekpK

[Fish in the News @FishInTheNews]

#NewSpeciesAlert - 𝑃𝑠𝑒𝑢𝑑𝑜𝑙𝑎𝑔𝑢𝑣𝑖𝑎 𝑘ℎ𝑎𝑖𝑟𝑖𝑖, a new species of diminutive (25.6mm SL) sisorid catfish, is described from the Budhabalanga River in Odisha, eastern India. This species represents the first sisorid catfish described from the Budhabalanga, and the second species of this genus known from the Eastern Ghats.

🔒 https://t.co/lXfdHLoJlD

𝗥𝗲𝘀𝗲𝗮𝗿𝗰𝗵 𝗧𝗶𝘁𝗹𝗲
𝑃𝑠𝑒𝑢𝑑𝑜𝑙𝑎𝑔𝑢𝑣𝑖𝑎 𝑘ℎ𝑎𝑖𝑟𝑖𝑖, a new diminutive catfish from Odisha, India (Teleostei: Sisoridae)

𝗖𝗶𝘁𝗮𝘁𝗶𝗼𝗻
Vijayakrishnan, B., Shinde, G.A. & Gogineni, P.C. (2026) 𝑃𝑠𝑒𝑢𝑑𝑜𝑙𝑎𝑔𝑢𝑣𝑖𝑎 𝑘ℎ𝑎𝑖𝑟𝑖𝑖, a new diminutive catfish from Odisha, India (Teleostei: Sisoridae). Zootaxa, 5853 (4), 584–592. https://t.co/RAPlrs8bC4

𝗔𝗯𝘀𝘁𝗿𝗮𝗰𝘁
𝑃𝑠𝑒𝑢𝑑𝑜𝑙𝑎𝑔𝑢𝑣𝑖𝑎 𝑘ℎ𝑎𝑖𝑟𝑖𝑖, a new sisorid catfish, is described from the Budhabalanga River in Odisha, eastern India.

The new species can be distinguished from all its congeners in possessing a prominent and fleshy protuberance along the dorsal-fin base. It can additionally be distinguished from congeners in having the following combination of characters: serrated anterior margin of dorsal-fin spine, ovoid thoracic adhesive apparatus, body depth at anus 15.0–19.2% SL, adipose-fin base length 13.2–18.3% SL, dorsal to adipose distance 17.0–22.4% SL, length of pectoral fin 25.7–31.8% SL, caudal fin length 27.7–33.4% SL, dorsal-fin base 7.6–13.5% SL, head depth 10.9–13.8% SL, and creamish bands on the body.

𝗘𝘁𝘆𝗺𝗼𝗹𝗼𝗴𝘆
The specific name ‘𝑘ℎ𝑎𝑖𝑟𝑖𝑖’, is a tribute to Khairi, the famous tigress from Odisha, which was orphaned as a cub in 1974 in the forests near the Similipal National Park located adjacent to the type locality. Khairi was hand-reared by noted naturalist and forest officer Saroj Raj Choudhury, and his wife Nihar Nalini Swain, and became one of the most extensively studied tigers in history, playing a pivotal role in understanding of tiger behaviour.

𝗣𝗵𝗼𝘁𝗼 𝗖𝗿𝗲𝗱𝗶𝘁
Top - 𝑃𝑠𝑒𝑢𝑑𝑜𝑙𝑎𝑔𝑢𝑣𝑖𝑎 𝑘ℎ𝑎𝑖𝑟𝑖𝑖, NZC/ZSI/NRC/F-10776, paratype, 24.9 mm SL, showing live colouration.
Bottom - Map showing the type locality of 𝑃𝑠𝑒𝑢𝑑𝑜𝑙𝑎𝑔𝑢𝑣𝑖𝑎 𝑘ℎ𝑎𝑖𝑟𝑖𝑖 in Odisha State, India.

© 2026 the Author(s). Published in the journal Zootaxa.

#NewSpecies #Ichthyology #Taxonomy #Biodiversity #AquariumHobby #Fishkeeping #Aquarist #TropicalFish #FishTank #Khairi #Catfish #Catfishes #India #Sisorid #Pseudolaguvia #Sisoridae #Odisha #Siluriformes #Sisorinae #EasternGhats #SimilipalNationalPark #Morphology #Tigress #BudhabalangaRiver #SimilipalHills

[King Hooky 🪱🧬🦖👾 @PrayingHagfish]

My top three reasons on why I hated creationism as a concept:

3. It's a boring-ass worldview devoid of imagination

2. I've met WAAYY too many people irl who denied evolution

1. It enables people to exploit the enviornment because "god made it for us to rule over"

[Swamp_Ape_Science @SouthApe]

Terror birds were around for so long and in so many unique forms that they could hold up a documentary all by themselves to be honest.

[Joschua Knüppe @JoschuaKnuppe]

Gearing up for day 2 at #DinoconUK! We already sold a lot, but also lost so much money to our fellow vendors! A clear win-win situation.
Come visit us at stall 9!

[Ausarchosaur @ausar_the]

This is laughable. Not least of which because it’s questionable how much a large terror bird would even see an animal as large as an adult Toxodon as prey, let alone something probably over twice as tall as that.

[Ed @Elemental93]

Here's the creature of the hour, Saurolophus! Or at the very least one of them. This giant Hadrosaur is found from the Nemegt formation at the end of the Cretaceous. Despite having a wealth of information on this animal it seems to never show up in media...

[Armin Reindl @ArminReindl]

#DinoConUK is imminent

[Nick Volpe @nvolpewild]

HALLOWEEN PHASE AMAZON TREE BOA OMMMMMG!!!!! 🤯🐍

[🦕A Tired Pterosaur🦖 @ATiredPterosaur]

ARMSBY BROUGHT THE SKETCHBOOK!!
#DinoConUK

[Dr. M. O'Sullivan @Irishpalaeo]

#Dinoconuk

[Ausarchosaur @ausar_the]

What do T. rex, Arctodus simus, Venaticosuchus, and the Clovis people all have in common?