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Rivers (@RiversKnown21) profile picture

Rivers

@RiversKnown21

Psych student with a heart in the Jurassic 🦕🎶 Allosaurus lover | Digging into minds & fossils | Art, music, & dino facts on repeat | I want to fossil hunt🦖💚

 Virginia, USA
Joined February 2025
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Photo by Rivers (@RiversKnown21)Photo by Rivers (@RiversKnown21)Photo by Rivers (@RiversKnown21)Photo by Rivers (@RiversKnown21)Photo by Rivers (@RiversKnown21)Photo by Rivers (@RiversKnown21)Photo by Rivers (@RiversKnown21)Photo by Rivers (@RiversKnown21)Photo by Rivers (@RiversKnown21)Photo by Rivers (@RiversKnown21)
Colors of the Dekkar Formation - Spinosaurus sp. Here are a beautiful pair of Spinosaurus teeth! The smaller one, a juvenile, lies in-situ with the beautiful colors of the matrix Behind is an adult Spinosaurus tooth In my mind the adult protects the juvenile; a family 💙
Image from Rivers (@RiversKnown21)
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The Japanese government shared a video promoting international tourism to Fukui Prefecture, which is well-known domestically for its dinosaur fossils and museum, but is not famous abroad. They are hoping that foreign dinosaur lovers will visit.
The Gov't of Japan (@JapanGov) profile pictureThe Gov't of Japan
@JapanGovJan 30
Dinosaurs are all the rage in Fukui Prefecture 🦖! Discover Japan's Dinosaur Kingdom, home to world-class research, excavation projects ⛏️, and one of the largest dinosaur museums in the world. #RegionalRevitalization
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Here is Jack Horner asking if Jeffery is available so he and his student can visit him
Image from Rivers (@RiversKnown21)
Ellie Leonard🇺🇦 (@RedPencilScript) profile pictureEllie Leonard🇺🇦@RedPencilScript19 Oct 2025
Email from Jack Horner on Jeffrey Epstein's upcoming visit to the Museum of the Rockies in Bozeman, MT
Image from Ellie Leonard🇺🇦 (@RedPencilScript)
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Portrait of Allosaurus jimmadseni. Based on the Walking White Dinosaurs documentary. #Allosaurus
Image from Repti (@ElReptileano)
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Moth Quetzalcoatlus icon!
Image from SilverOwl Arts (@SilverOwl_Arts)
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a THIRD paper has hit the Nanotyrannus confirmations
Thomas R. Holtz, Jr. 🦖💕 (he/him) (@TomHoltzPaleo) profile pictureThomas R. Holtz, Jr. 🦖💕 (he/him)@TomHoltzPaleoJan 14
T. rex grew up slowly: New study reveals 'king of dinosaurs' kept growing until age 40 phys.org/news/2026-01-rex-gr… via @physorg_com
T. rex grew up slowly: New study reveals 'king of dinosaurs' kept growing until age 40

T. rex grew up slowly: New study reveals 'king of dinosaurs' kept growing until age 40

For decades, scientists have been counting annual growth rings—similar to tree rings—inside fossilized leg bones of Tyrannosaurus rex to estimate how old the giant carnivores were when they died and...

phys.org
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lets be silly with mama #paleo #paleoart #sciart #slayleoart
Image from dino dan (@ddinodan)
Image from dino dan (@ddinodan)
Image from dino dan (@ddinodan)
Image from dino dan (@ddinodan)
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Image from 🌸Cassandra🌸🏳️‍⚧️🦕🖌️ (@TenontosaurusT)
木下いたる/ ITARU KINOSHITA (@kurinosukeboy) profile picture木下いたる/ ITARU KINOSHITA
@kurinosukeboyJan 5
We are nominated for MANGA WE WANT TO SEE ANIMATED RANKING! Please VOTE for "No.30 Dinosan (Dinosaur Sanctuary)"!!!!! I'll show you how to vote in the replay below. ⚠️Deadline to vote is January 30th, 2026. VOTE from here⏬ anime-japan.jp/activities/aj…
Image from 木下いたる/ ITARU KINOSHITA (@kurinosukeboy)
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We are nominated for MANGA WE WANT TO SEE ANIMATED RANKING! Please VOTE for "No.30 Dinosan (Dinosaur Sanctuary)"!!!!! I'll show you how to vote in the replay below. ⚠️Deadline to vote is January 30th, 2026. VOTE from here⏬ anime-japan.jp/activities/aj…
Image from 木下いたる/ ITARU KINOSHITA (@kurinosukeboy)
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Utahraptor ostrommaysi
Image from Niki Joy (@paleobug)
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It's real. And it's spectacular. Sometimes, one fossil really can change everything you think you know. NEW PAPER (see bottom of thread) AND 🧵
Image from Dr. James G. Napoli (@JGN_Paleo)
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Could any #paleoartists help me understand muscles in sitting therapods? Or muscles in therapods? I want to make an #allosaurus sculpture, but I don't quite know how the muscles work/what I need to change. Any tips, references, or more are greatly appreciated!! #dinosaur
Image from Rivers (@RiversKnown21)
Image from Rivers (@RiversKnown21)
Image from Rivers (@RiversKnown21)
Image from Rivers (@RiversKnown21)
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Could any #paleoartists help me understand muscles in sitting therapods? Or muscles in therapods? I want to make an #allosaurus sculpture, but I don't quite know how the muscles work/what I need to change. Any tips, references, or more are greatly appreciated!! #dinosaur
Image from Rivers (@RiversKnown21)
Image from Rivers (@RiversKnown21)
Image from Rivers (@RiversKnown21)
Image from Rivers (@RiversKnown21)
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Witch
Image from Kentaro Kameda 亀田 健太朗 (@kntrkmd224)
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Before I'm off to the fieldwork, I write a brief 🧵on Hell Creek flora (what we know about the HC flora and what we got it wrong).
Image from 🎃 Tyler Carpenter 🎃 (@TyRex_68mya)
🎃 Tyler Carpenter 🎃 (@TyRex_68mya) profile picture🎃 Tyler Carpenter 🎃@TyRex_68mya10 Jun 2025
Okeydokey! I will give a brief on Hell Creek flora 🌴🦖(Late Cretaceous) just a few days before off to the fieldwork. It will be about what we know about the HC flora, and what we got it wrong. Look forward to it
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What if Extinction didn't have to be Forever?
Image from Francoo192 (@Francooo192)
Image from Francoo192 (@Francooo192)
Image from Francoo192 (@Francooo192)
Image from Francoo192 (@Francooo192)
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Merry Christmas! Dinocember Day 11 - Deinonychus
Image from Inkasaur 🇵🇭 (@Inkasaur)
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Rivers retweeted
caxela (@caxela1) profile picture
caxela@caxela19 Aug 2025
Young Dinornis at the Beach 🏖️
Image from caxela (@caxela1)
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Jimmadseni (quick comm)
Image from Literally Miguel 🇻🇪💥🔫 (@LiterallyMiguel)
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Rivers retweeted
Jay (@KakapoJay) profile picture
Jay@KakapoJay10 Aug 2025
Trying out a new texturing method with this Herrerasaurus! I've been wanting to figure out how to make my animals' scales feel a bit *crunchier*
Portrait of a green, brown, and white Herrerasaurus

ALT Portrait of a green, brown, and white Herrerasaurus

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