#Late Jurassic Period

[blueiscoool]

Billionaire Ken Griffin Buys Stegosaurus Fossil ‘Apex’ For Record $44M

Stegosaurus skeleton, nicknamed 'Apex,' sells for record $44.6M

A nearly complete stegosaurus skeleton sold at a Sotheby's auction in New York on Wednesday for a record $44.6 million -- the most ever paid for a fossil.

The dinosaur, nicknamed "Apex" -- which lived between 146 and 161 million years ago in the Late Jurassic Period -- was originally expected to sell for between $4 million and $6 million, according to the auction house.

Sotheby's has said Apex is the "most complete and best-preserved Stegosaurus specimen of its size ever discovered."

The skeleton was discovered on private land in Moffat County, Colorado -- in northwestern Colorado and on the border with Utah and Wyoming -- in May 2022 by commercial paleontologist Jason Cooper, with excavation completed in 2023, according to Sotheby's. The county is an area where many other dinosaur fossils have been discovered and is home to the Dinosaur National Monument.

Apex measures 11 feet tall and 27 feet long from nose to tail. The skeleton consists of 319 bones -- 254 of which are fossils and the remainder being either 3D printed or sculpted. It's unclear if Apex was male or female.

Stegosaurus sp. Late Jurassic (approx. 161-146 million years ago) Morrison Formation, Moffatt County, Colorado, USA

[makairodonx]

A Brontosaurus valentine -two Brontosaurus excelsus bonding, male at the left and female at the right

[shattersaurus]

collection of all the prehistoric ocean period sets

[redlikewinter]

Gorgosaurus! Inspired by the gorgosaurus from walking with dinosaurs.

Not one of my favourite pieces.

[ancientfrozenglaciershark]

Museum of Natural History of Utah!

[mineralsrocksandfossiltalks]

March Madness Round 2 Bracket 3

Welcome back to another day of March Madness. Let's see who made it through to compete today! Our first competitor is the giant ray-finned fish Leedsicthys problematicus! As you can gather from its name, it is is found in Great Britain but has also been found in France, Germany and Chile in early to middle Jurassic-aged rocks.

It is going up against Lisowicia bojani the giant dicynodont. Lisowicia lived in Poland during the Late Triassic. This explains why I find it difficult to say.

[frenchyfoxy]

Fubuki doodle!! Also dino doodles past the break ❤

Stegosaurus is literally my favorite dinosaur, but I also drew a parasaurolophus and therizinosaurus. They're just quick doodles, nothing super accurate

[extinctworld-ua]

Thalassiodracon

Thalassiodracon — вимерлий рід плезіозаврів з родини Pliosauridae, що існував у пізньому тріасі – ранній юрі і відомий виключно з Нижнього Ліасу Англії. Типовий і єдиний вид — Thalassiodracon (Plesiosaurus) hawkinsi (Owen, 1838).

Повний текст на сайті "Вимерлий світ":

https://extinctworld.in.ua/thalassiodracon/

[nickysfacts]

Pteranodons use to be falling with style, with their sexy crests and always being high on oxygen!

😆

[joitiks]

graysexual ceratosaurus & questioning allosaurus !!

they can both be found here ~

[blueiscoool]

Large Kranaosphinctes Ammonite Late Jurassic Period (approx. 160 million years ago), Madagascar

While dinosaurs ruled the land during the Late Jurassic, the ammonite genus Kranaosphinctes could be found flourishing in the oceans.

Ammonites were a type of cephalopod — the taxonomic class that includes today's nautilus, octopus, and squid. Much like a submarine, ammonites employed gas- and liquid- filled chambers to regulate their position in the water column. The animal itself lived only in the outermost compartment, employing its tubular siphuncle to connect its chambers along the shell's ventral surface.

[makairodonx]

As the sun sets upon a redwood forest 154 million years ago in what is now the Morrison Formation of Colorado, A lone male Stegosaurus stenops takes one of his juveniles to feed on some fern leaves as a few Mesadactylus chase fleeting insects around the tree trunks.

[shattersaurus]

Apexpredator of the cretaceous oceans, Mosasaurus Hoffmanni

[redlikewinter]

Oviraptor vs. Velociraptor. One of my favourite pieces yet.

[sallywitchartist]

The first part of my dinosaur coloring-book series is finally out on Amazon! I would really appreciate, if you, lovely people, would go and check it out 💜

[mineralsrocksandfossiltalks]

Fossil Friday: Barosaurus or Supersaurus?

During my short time volunteering in the prep lab at the BYU Museum of Paleontology I was given one of the last jackets they had stored away from the Dry Mesa Quarry back in the 60's.

Here's a closeup as I was trying to piece the sucker back together.

It was a massive cervical (neck) vertebra and there were two dinosaurs paleontologists believed it could be: Barosaurus or Supersaurus. Both of these sauropods come from the Late Jurassic Morrison Formation, both can be found in Colorado and in the Dry Mesa Quarry (located near Delta, CO) and both are diplodocid sauropods.

Barosaurus, meaning "heavy lizard", averages about 82-89ft (12-20m) in length. The cervical vertebrae were up to 50% longer than Diplodocus cervicals while the caudal vertebrae were shorter. This meant Barosaurus had a longer neck but a shorter tail than Diplodocus. It also had shorter, more complex neural spines than Diplodocus.

Supersaurus, or "super lizard" averages about 108-115ft (33-35m) in length with at least one individual housed at BYU estimated to have been 128ft (39m) long. It was similarly built to Apatosaurus.

Now the vert I was working on (along with another one that had already been prepped out) are about 4.5 ft (1.4m) long which brings this animal's size up considerably, closer to 150 ft (45m) long.

So what do you think? Barosaurus or Supersaurus?