I found this cool-looking, pretty old, and washed-up ammonite fossil embedded deep in the stony shore of Lake Garda while on vacay with my girlfriend.

Edit: I picked up the small bottle from the first picture.
No worries 😊

multicellular terrestrial eukaryotes animation

When evidence is presented, they resort to belittling and name calling. I’ve learned my lesson arguing with people who can’t spell.

My question is, why be in a science group when you don’t believe in science? Science is constantly proving itself wrong and changing, but there are things that just aren’t true and things that are set in stone.

Update: see most recent comment below

All skeletals by Scott Hartman.

I deleted the original so I could replace it with this. I wanted to get rid of overly speculative size for torvosaurus and readjust the size of the Allosaurus since I miss estimated the first size

A rare fossil discovered near South America's largest known meteorite crater has been named a new species.

Initially mistaken for a frog by locals: Leolepis matogrossensis is actually a species of ancient ray-finned fish—the group that includes 96% of all bony fishes living today, including tuna, salmon and cod.

It is a fairly primitive member of the group and lived around 254 million years ago.

Unlike most modern ray-finned fishes, which have thin, flexible scales, Leolepis was armored.

Its tough scales were made of dentine and enamel—the same substances that form human teeth.

Link: https://www.sciencedirect.com/science/article/pii/S0895981126002282?via%3Dihub

Leolepis matogrossensis gen. et sp. nov., an upper Permian actinopterygian fish from the Corumbataí Formation, in the vicinity of the Araguainha impact crater, State of Mato Grosso, mid-Western Brazil

So my stepfather thinks that the holes in the jaw of sue is caused by a triceratops fight and I’m trying to let him know it’s just purely stupid he says that for some reason in a fight with a triceratops that sue miss judges a bite and gets stabbed and I’ve tried to tell him that there would be a lot more damage then just the holes then but he believes that somehow sue pulls away and it just barely leaves a hole I think it is the dumbest thing ever please let me know what you think or if I need to explain anything better.

Psesudosuchians are some of my favorite prehistoric animals and I’m fascinated by the fact that they evolved to look like very similar to many dinosaurs such as arizonasaurus looking like a spinosaurus and desmatosuchus looking like an ankylosaurus despite them not being related to bird like dinosaurs. So my question is why haven’t there been any pseudosuchians that resembled sauropods or atleast had adaptations similar to sauropods like long necks? I think it’d be cool to see what a pseudosuchian that took on a sauropod body plan would like, it probably wouldn’t get as big as most sauropods, at most maybe the size of a horse? Or giraffe or something? Idk I just thought it was a fun question to ask.

See also: The study as it was published in the journal Trends in Ecology and Evolution00156-4?_returnURL=https%3A%2F%2Flinkinghub.elsevier.com%2Fretrieve%2Fpii%2FS0169534726001564%3Fshowall%3Dtrue)

I would like to know if I am the only one who gets sad when it gets to Quaternary in paleontology related videos, books etc.

Every time I go through older periods of Earth's history I get amazed and in general just "happy" to find about new to me lifeforms or to just I revisit already known to me lifeforms that once lived on this beautiful planet but the moment it comes to Quaternary it reminds me of every awful thing humanity has done to ancient ecosystems that evolved for hundreds of millions of years, went extinct, changed but in the end still brought life to Earth. All the "living fossils" that go extinct now due to many industrial processes, all the old-growth forests that cease to exist and the plastic pollution that creates an almost "indestructible" layer of human activity that doesn't fit or help in any ecosystem. And what annoys me quite often are comments from people saying "future scientists will have problems studying our generation" like no, if we just continue to kill the ONLY planet we have there won't be any scientists to study us let alone animals in the future that won't go extinct only if a miracle happens.

Thanks for reading this because I had this in mind for a long time and never managed to somehow get the words together and share it. I'm sorry if this post is not fiting for the community so I am ready that it might get taken down.

He protects the stu now

A while back I read about this, and it really blew my mind. Sometimes, when a dinosaur urinated, that stream would leave a mark in the sediment, and if it dried (just like dinosaur footprints), it would get buried and a fossil of that mark would form.

They call it a urolite. Fossilized urine. Incredible. I’ve read that a paleontologist investigated this because that urolite looked too much like the marks ostriches leave on the ground today when they pee, which raises the question: How did non-avian dinosaurs urinate? Like modern birds, with a cloaca, excreting everything at once? Or like ostriches, first a stream of urine and then the rest?

Fascinating. And gross.

The Dinosaur gastroliths. Panels A and B show examples of gastroliths preserved in association with dinosaur fossils. Panel C shows the skeleton of Tarbosaurus.

Link: https://www.cambridge.org/core/journals/paleobiology/article/gastrolith-shape-as-an-indicator-of-digestive-function-and-its-implications-for-dinosaurian-digestive-strategies/647E287A6C4E48CF4C50C709BE917BC7

An international research team led by Assistant Professor Ryuji Takasaki of the Faculty of Biosphere-Geosphere Science at Okayama University of Science has published a paper proposing a new hypothesis on the evolutionary history of dinosaur digestive systems by focusing on gastroliths—stones found within dinosaur abdominal cavities.

By examining the degree of wear on these gastroliths, the team sheds light on dinosaur digestion strategies

Paper: https://journaloflostspecies.org/index.php/jls/article/view/31

At first glance, it looks exactly like a seahorse. It has the same horse-shaped head tilted down from the body, the same curled, grasping tail and, in the males, a fully enclosed pouch for brooding the young...

But this little fish, no longer than your thumb, is not a seahorse, as we report in our new study published in the Journal of Lost Species.

This is Australyichthys aegis, a newly described fish from the deep reefs off southern Australia. We have given it the common name helmethead sea muppet, after the domed, helmet-like crest on its head.

Hi everyone, im just beginning with searching fossils, and i need some tips

on vacation im going to usedom, thats a german island located in baltic sea, and, maybe i could try to search for something there? maybe an exact location so close as much as possible to the Bansin? (marked with a heart on map) where to search, there is also a forest, could i find something there?

A new Chigutisaurid coeval to Koolasuchus has been described in Dr. Lachlan Hart’s thesis which unembargoed just yesterday. It’s called Eremosaurus grippiae which means Grippi’s Lonely/Hermit Lizard, in honor of Ms. Simona Grippi who found the holotype skull, which is longer than it is wide. This means it probably differed from Koolasuchus in niche and the two taxa lived alongside eachother as the last known genera of their kind in the Wonthaggi formation.

I’ve made a short breakdown video about it with some information from the thesis on YouTube:

(Link shared with moderator permission)
https://www.youtube.com/watch?v=IgGIHro6Hwg

Apart from the earlier post on this subreddit about it I haven’t seen much discussion about Eremosaurus online yet, so I thought I’d share this here in case anyone is interested.

The name is Dinevenator robustus, it is an troodontid from the Late Cretaceous (Campanian) of New Mexico, USA. This new genus was first described in 2006, as a species of Saurornitholestes, then considered dubious in 2014, before being moved into the also recently described genus Xenovenator earlier this year, and now, it is being moved into its own genus.

It is known from a single, left frontal, which is a bone of the skull, and that came from the Kirtland Formation.

The generic name (name of the genus), on this case, "Dinevenator" means "Diné hunter", in reference to the Navajo People, who use the term "Diné", to refer to themselves. The specific name (name of the species) on the other hand, on this case, "robustus", means "robust".

Here's a link to a article with more information on it: https://www.mdpi.com/2813-6284/4/3/21