René Dederichs

Cover des Buches Die Welt der Plesiosaurier von Achim Schwermann und Sven Sachs

Rückseite des Buches Die Welt der Plesiosaurier von Achim Schwermann und Sven Sachs

NEUES BUCH

Ich freue mich, die bevorstehende Veröffentlichung meines ersten Buches „Die Welt der Plesiosaurier – Paläontologische Abenteuer“ anzukündigen, das ich gemeinsam mit Achim Schwermann geschrieben habe und das Joschua Knüppe (@joschuaknuppe.bsky.social) eindrucksvoll illustriert hat.

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Result from the Agate Fossil Beds #paleostream!
This early Miocene lagerstätte from Nebraska (USA) is a fantastic window into our understanding of the transition from forest communities to grassland biomes...

Oh True. I remember that there are more Special issues with Morrison FM. Connection - all in the making/in the waiting

We both know how long this will
Take and we’re not even close..🥹 I mean I am still struggling to get my first contribution submitted

Welcome! You are invited to join a webinar: Bizarre dinosaurs from the Middle Jurassic of Morocco: implications for armoured dinosaur evolution. After registering, you will receive a confirmation emai... The Middle Jurassic is a critical time in the evolution of the dinosaurs because it witnessed the radiation of many groups, giving rise to a diversity of familiar forms such as the plated stegosaurs a...

Next Tuesday evening I'm giving an online seminar on Spicomellus for our funders, the British Institute of Libyan and Northern African Studies. It's free and anyone can come! Sign up here if you're interested us02web.zoom.us/webinar/regi...

This final version of this work is now available as a PDF. On behalf of my co-authors, I'd like to thank the editors and reviewers for their expertise and handling of the manuscript. www.ameghiniana.org.ar/index.php/am...

I am not the only one that had a rough year, so while suiting up for 2026 in the best armor I can get - please don’t loose hope, reach out when you are struggle, and thank
you for tagging along in this journey. See you soon!

Artworks I used are by @joschuaknuppe.bsky.social

Name dropping is something that I
always find difficult because I fear to exclude people or that it looks like to much of glazing.
Nevertheless, I want to thank all of the folks that I worked together with, shared some laughter and helped me regain hope when it was needed

I also continued with staying close to the people that welcomed me into academia, into scientific communication and into the world
of museums. One of these gave me actually a job that I have until
March next year and was the proof that my efforts are being
rewarded in time

However, one thing that I promised myself was to visit new people/ new museums
and reconnect with others. I met fantastic folks at smaller spots, visited at least three museums
for the first time and had some
wonderful days, I dare to say the best of the year.

While I had the honor to be CoAuthor in two papers (on diplodocoids and ornithomimosaurs) as guest researcher at the Universiy of Zurich, which I am absolutely thankful for, I wished that I could have done more.. but I couldn’t for several personal reasons - so I hope 2026 helps me more on that

This year was one of my personal worst - however, I don’t want to lose hope. Not when I still can do stuff that I love, not when I find sometimes good. Anyways, some highlights of my 2025, with a lot of appreciation for the people that I met and opened their arms. Here is a short thread with images

I would invite you so that we could share dinosaur facts to everyone!

🦌 🎅; Daily Paleo 🦌 🎅; Sinomegaceros spp.

Oh deer, Rudolf really let himself go... From Late Pliocene to Late Pleistocene Central and east Asia, "Chinese great horn" is a genus of prehistoric deer of up to 500kg with flat and broad branches and robust, pachyostotic mandibles

Art by Rudolf Hima

Christmas cards, created by the de la Rue Company for the Natural Museum of London, 1875-1885. Ideal impression of a future creation discovered by Professors Ichthyosaurus, Megalosaurus, & Co

“A rink in the Glacial Period.”

“Study of the Mammoth and Dinotherium”

Merry Christmas 🎄✨

Merry Christmas, to one and all!

🎉 Congratulations to Scripps Oceanography master’s student Rhowan Ho who has been selected for the 2026 Museum of Science, Boston Digital Science Communication Fellowship that supports emerging scientific leaders in mastering digital storytelling, strategic communication and public engagement!

Can you give more details on the Quadrate? We are currently looking into that and we are not fully sure if that is from an allosauroid.

Super cool stuff!! Tess has put a massive amount of work into this project, and the end result is really incredible. Certainly worth a read, and major congrats to @tessasaurus.bsky.social and the rest of the team!

That’s a bloody shame. We can tell so much about Dodos and there are still some surprises to tell. Is it also because of the execs (like why we did not get hominids)?

Portrait of Mary Anning wearing a green cloak and straw bonnet, holding a hammer and with a basket over her arm.

Extract of a letter from Elizabeth Philpot to Mary Buckland about Mary Anning: 'yesterday she had one of her miraculous escapes in going to the beach before sunrise and was nearly killed on passing over the bridge by the wheel of a cart which threw her down and crushed her against the wall, fortunately the cart was stopped in time to allow of her being extricated from her most perilous situation and happily she is not prevented pursuing her daily employment.'

Early 20th century postcard showing the bridge (circled) where Mary Anning had her accident on 8 December 1833. The Fossil Depot to the right of the bridge had nothing to do with Mary Anning and was demolished with other buildings on that side of the bridge to widen the road in 1913.

9 December 1833: In Lyme Regis Elizabeth Philpot writes to Mary Buckland in Oxford to tell her that Mary Anning was almost killed by a cart on the narrow bridge over the River Lym as she was heading for the beach before dawn. This was one of at least 6 occasions when Mary narrowly escaped death.

I went today to a very small museum in Niederweningen as they found several wooly mammoths while building the small city in #Switzerland. Lovely staff, cute exhibition and a nice example how your own home can add something wonderful to a big picture. #museums #paleontology

Very excited to share that our latest paper is out in Science! We show that the type specimen of Nanotyrannus—an isolated skull—is fully grown, showing that it is not a juvenile Tyrannosaurus rex but a distinct species (1/12)
www.science.org/doi/10.1126/...

Nanotyrannus and Tyrannosaurus coexisted at the close of the Cretaceous - Nature A well-preserved skeleton of a nearly mature tyrannosaur from the Hell Creek Formation in Montana, USA supports the existence of a second Nanotyrannus species, Nanotyrannus lethaeus sp. nov., and vali...

The final, formatted version of the Zanno & @jgn-paleo.bsky.social Nanotyrannus paper is out:

Zanno, L.E., Napoli, J.G. Nanotyrannus and Tyrannosaurus coexisted at the close of the Cretaceous. Nature (2025). doi.org/10.1038/s415...

In case someone needs this gif

I will just say: if the otter sequence ended with a homo erectus watching the otters while holding a spear and a burning stick with sth like “but even otters can be dethroned” in the narration, that would have been an insane cameo and it would have been much accurate to what happened at this time

Then chapeau to the entire team. I loved all the designs and the cave lion is the best design of all time for the cat 🫶🏻

Who made the coloration of the cats? And are the cave lion and s. Populator based on cave painting interpretations?

Yes, there was a deliberate push to get rid of all scientific names; of course, I think this is a massive mistake. And, indeed, no roaring for sabretooths, their hyoid anatomy indicates that they couldn't do it :) #PrehistoricPlanetIceAge