#fossilfriday

[fossilprep]

Happy Fossil Friday! This is the skull of Liberty the Lambeosaurus from the upper Judith River formation near Havre, Montana. It was found by Jack Wilson and Denver Fowler in 2020 and its preparation is nearing completion in our lab.

#fossilfriday #dinosaurs #paleontology #palaeoblr #paleoblr #palaeontology #badlands dinosaur museum #fossils #photography #biology #geology #lambeosaurus #prehistoric #extinct #Liberty

[bobnichollsart]

The third edition of DINOSAURS: HOW THEY LIVED AND EVOLVED, by Darren Naish and Paul Barrett is out now. Here is my Ceratosuchops cover art and the draft designs I submitted to the London Natural History Museum.

Do you agree with their cover choice?

#Art #Painting #PaleoArt #PalaeoArt #SciArt #SciComm #DigitalArt #Illustration #Dinosaurs #Birds #Reptiles #Palaeontology #Paleontology #FossilFriday

[amnhnyc]

What a croc! 🐊 This Fossil Friday, let’s take a bite out of the weekend with Deinosuchus—a giant crocodilian that lived alongside the dinosaurs some 75 million years ago. Reaching lengths of more than 35 feet (10.7 m) and weighing more than 8,000 lbs (3628.7 kg), Deinosuchus was as long as a school bus and as heavy as an elephant, making it one of the most powerful predators in its ecosystem. In fact, partially healed bite marks found on the bones of a tyrannosaur in North America match this giant croc’s teeth, suggesting Deinosuchus could go toe to toe with even the most formidable of dinosaurs. This image is a historical reconstruction from 1942 and is not representative of current size estimates. Photo: Image no. 318634 © AMNH Library #paleontology #fossils #dinosaurs #fossilfriday #amnh #museum https://www.instagram.com/p/CqLMKD5M5cW/?igshid=NGJjMDIxMWI=

#paleontology #fossils #dinosaurs #fossilfriday #amnh #museum

[mesozoicmarket]

A pair of fossilized fish teeth, likely Lanxangichthys alticephalus from the Grès supérieurs Formation in the Savannakhet Province of Laos. These ancient lepisosteiforms or gar relatives had durophagous button-like teeth used to crush hard-shelled prey. This species was one of the possible prey for Asian spinosaurids like Ichthyovenator and Siamosaurus.

#fish #fossils #paleontology #palaeontology #paleo #palaeo #lanxangichthys #lepisosteiformes #cretaceous #mesozoic #prehistoric #science #paleoblr #fossil friday #fossilfriday #ランサンイクチス #レピソステウス科 #化石 #古生物学

[dinonerdsblog]

Hi I will add more photos of Zuul😃

Also I will add another dinosaurs too❗️

#dinosaur #paleontology #art #japan #ankylosauria #zuul #fossil #museum #science #jurassic world #fossilfriday

[geologyjohnson]

I've been working as part of the BASE project for the last 18 months, drilling the 3.22 billion year old Moodies group in South Africa to get fresh unweathered material in the least deformed sections. We finished drilling late last year, and last week we were able to sample the core.

To say this material is well preserved is an understatement. It's better preserved than some Phanerozoic material I've worked with.

My role will be to look for organic walled microfossils in the fine grained sedimentary rocks. Previous researchers found some large organic spheres in the Moodies in 2010, but those rocks were from a gold mine and the spheres were badly preserved. Our material has not been affected by hydrothermal gold mineralisation so we are hoping to find some nice fossils. Regardless, as you can see below, the microbial textures are beautifully preserved with lots of primary features.

Click on each photo to read the explanation in the caption.

You can learn more about the BASE project here https://www.facebook.com/profile.php?id=100076245104891

Here's the paper talking about the fossils from 2010

#geology #geologyjohnson #palaeontology #precambrian #fossils #fossilfriday #acritarch #archean #south africa #micro fossil #microbial #microbialmat

[thecoffeeisblack]

It's Fossil Friday🦴, be like Carnotaurus sastrei: Run like the wind! 🦖

#illustration #paleoart #art #paleontology #paleo #sciart #artistsontumblr #digitalart #science #digitalillustration #carnotaurus #dinosaur #humanartist #fossilfriday

[stealth-science]

I have started volunteering at a local nature center. They have this very cool piece petrified wood in their collection.

#science #science rules #geology #geology rocks #colorado #fossil #fossilfriday #petrified wood #museum #nature center #Starsmore #volunteering

[mineralsrocksandfossiltalks]

FOSSIL FRIDAY: STEGOSAURUS

Stegosaurus, the "roof lizard" is by far the best dinosaur and that is a fact not my heavily biased opinion.

It was discovered by Arthur Lakes in Morrison, Colorado

and named by your boy, Marsh.

Originally, poor Marsh believed Stegosaurus to be some sort of turtle-like animal which is where the name originated from.

This is one of the first dinosaurs we learn as kids due to the recognizability of the plates and spikes.

(this comic is far too relatable haha)

Stegosaurus was over 20ft long and weighed several tons.

It had a small skull with small, triangular teeth in the back of its mouth for grinding. There were no teeth in the front of the mouth which was probably covered by a keratinous beak.

Stegosaurus had around 10 cervical (neck), 17 dorsal (back), 4 sacral (hips), and 46 caudal (tail) vertebrae. The dorsal verts were stretched and the caudal neural spines began to bifurcate (split) halfway down the tail.

They have three toes on their back feet and five toes on their front feet.

The most recognizable parts are, of course, the plates and spikes. Both of these are highly specialized osteoderms (bony cored scales) similar to modern crocs.

The largest plates were over the hips and were up to 24 in (60cm) wide and tall. The function of the plates has been hotly debated for a very long time. I even wrote a paper about it in one of my paleo classes in college. There are blood vessels running throughout the plates which make them pretty poor for physical defense. However, they would potentially be ideal for flushing blood into and changing the color just like modern lizards.

This could be used for aggressive behaviors, male to male warnings or to warn predators to back off. The plates could certainly make a Stegosaurus look larger than it really was. Now, that doesn't mean they were completely without protection. A study done in 2010by Christensen and Tschopp found skin impressions on Hesperosaurus plates and determined it probably had a keratin sheath over the plates making them stronger. Another possible use of the plates was thermoregulation. They could have dumped excess heat the way cattle horns or duck bills do today.

Then, there's the thagomizer. The word actually came from a Far SIde comic and paleontologists liked it so much we just sort of...adopted it.

And can you believe there's actually been debate over whether they actually used them?

Robert Bakker believed the tail was flexible enough (despite the argument that the plates would make this impossible) to be a weapon due to a lack of ossified tendons seen in other dinosaurs to stiffen the tail. He also said that the front legs were muscular enough to allow it to deftly swivel it's back half threateningly. McWhinney and others did a study that showed high incidence of trauma-related damage to the tail and spikes implying they were, in fact, used as a weapon. Plus, there is an Allosaurus caudal with a puncture that a Stegosaurus spike would fit into snuggly.

There are two, possibly three species of Stegosaurus: S. ungulatus, S. stenops, and S. sulcatus. The first is probably just a synonym of S. stenops and S. sulcatus is likely an entirely different genus. Only time and more data will tell.

S. sulcatus...which looks nothing like the others.

My absolute favorite thing about Stegosaurus is...well, there two things. First, one specimen was found with throat armor which is just freaking cool.

Second, baby stegos are called steglings. Freaking STEGLINGS. How damn cute is that?

We have found a Stegosaurus tooth at the Evil Tree Bonebed and I really hope we find the animal. A baby would let me die happy. Want to help me find a Stegosaurus? Come join us this summer at CNCC for our summer field program. Check out the link below.

#paleontology #dinosaur #fossils #fun facts #stegosaurus #fossilfriday #favorite

[corvuserpens]

I wasn’t gonna post this one, it’s a bit wonky bc finding good references is a bitch and I’m still figuring out ceratopsian proportions, but I haven’t done anything in graphite in roughly three years and even if they look weird, I’m happy with the technical result. Have a pair of Centrosaurus, my favorite ceratopsian, for this Fossil Friday.

Find me on deviantArt and twitter

#palaeoblr #paleoart #dinosaurs #palaeoart #artists on tumblr #dinosaur art #fossilfriday #extinct fauna #prehistoric fauna #ceratopsian #paleontology #mesozoic #my art

[prasemvanguardgerman]

For this Fossil Friday i fished already dry of some other specimen from my collection.

Probably some Gryphea arcuata shells.

Ask to all : Brachiopod shell fossils or are these nautiloide shell rock Fossils?

#fossils #rocks #geology #fossil identification #nautiloid #brachiopods #fossil collecting #fossil friday #fossilfriday #Fossil

[tff-praefectus]

Mosasaur skull

#mosasaur #fossilfriday #paleontology #science #reptile

[bobnichollsart]

My 25 years of palaeoart chronology...

I'm continuing with the acrylic paintings I created in 2000. This one is Devourer of Giants, it features three Otodus megalodon, which have been attracted to some dead and bloated Anancus. The Anancus were drowned by a flash flood and carried out to sea.

#Art #Painting #PaleoArt #PalaeoArt #SciArt #SciComm #DigitalArt #Illustration #Dinosaurs #Birds #Reptiles #Palaeontology #Paleontology #FossilFriday

[amnhnyc]

Happy Fossil Friday! This photo is a blast from the past. Snapped circa 1959, it features a visitor admiring the iconic Stegosaurus. With its plated back, spiked tail, and tiny head, it’s one of the Museum’s most recognizable dinosaurs. This large herbivore, which lived during the Jurassic some 140 million years ago, could reach lengths of more than 28 feet (8.5 meters). At one time, some scientists thought this dinosaur had a second brain because the one in its head seemed too small for such a massive animal. Stegosaurus did, however, manage with one small brain. Photo: Image no. ptc-876 © AMNH Library #amnh #dinosaurs #paleontology #fossilfriday #dinosaursarecool https://www.instagram.com/p/CpVQPlsr3fj/?igshid=NGJjMDIxMWI=

#amnh #dinosaurs #paleontology #fossilfriday #dinosaursarecool

[mesozoicmarket]

A fossilized tooth of an indeterminate basilosaurid, possibly Basilosaurus isis from the Samlat Formation in Dakhla, Morocco. It is unclear if the larger teeth from these ancient whales can be attributed to Basilosaurus.

#synapsid #mammal #fossils #paleontology #palaeontology #paleo #palaeo #basilosaurus #dorudon #cetacean #whale #eocene #cenozoic #prehistoric #science #paleoblr #fossil friday #fossilfriday #バシロサウルス #ドルドン #化石 #古生物学

[dinonerdsblog]

Zuul crivastator in National Science Museum in Tokyo, Japan 🇯🇵🦖. It reconstructed with Gorgosaurus which tried to attack Zuul ‼️ The mummified ankylosaur is one of most incredible fossil in earth history.

#dinosaur #paleontology #japan #zuul #fossil #museum #ankylosaurus #gorgosaurus #science #fossilfriday