#Leedsichthys

[typhlonectes]

This ancient fish was bigger than a whale shark—and faster than scientists ever imagined

Leedsichthys problematicus could overturn the bony fish paradox

Scientists have long struggled to explain why bony fishes are so small: The heaviest—the ocean sunfish—is just 2.3 metric tons, but cartilaginous fishes like whale sharks can weigh up to 34 metric tons. Now, a new study of an ancient giant suggests this modern difference is merely an evolutionary accident. Bony fish, which make up some 95% of all fish species, might be constrained by their metabolism according to one argument. Larger animals generally have to make do with less oxygen per gram of tissue; because bony fish seem to have higher metabolic requirements than sharks, it might simply be impossible for them to grow much larger than the ocean sunfish. Enter Leedsichthys problematicus. The extinct fish—thought to be the largest on record—lived about 165 million years ago in Europe and South America. It grew to at least 16.5 meters in length and might have weighed 45 metric tons, which means it was larger even than today's whale shark...

Read more: https://www.science.org/content/article/ancient-fish-was-bigger-whale-shark-and-faster-scientists-ever-imagined

#leedsichthys #prehistoric #fish #science #ocean #animals #fossils #nature #ichthyology #marine biology

[arminreindl]

Thalattosuchus and Leedsichthys

Quickly stopping by to report on a new paper describing stomach contents of a thalattosuchian (Jurassic marine crocodile).

The paper in brief describes a specimen of Metriorhynchus superciliosus (aka Thalattosuchus) with preserved stomach contents, which is already rare enough as is. What's even more interesting is that the stomach contents preserve both the gill rakes of the large fish Leedsichthys as well as various mollusc shells. Strange prey for what's a rather small piscivore. Although it was previously suggested that Metriorhynchus/Thalattosuchus attacked living Leedsichthys, this appears to have been based on missinterpreted evidence and given the enormous size difference its way more likely that the fish was simply scavenged, sorta like a kind of Jurassic whalefall. This actually finds support in the mollusc shells, which might have been ingested on accident alongside the fish remains.

Top left: The skeleton of this Thalattosuchus specimen Top right: The stomach contents in detail (G are gill rakes, S are shells) Bottom left: Live reconstriction of Thalattosuchus by Gabriel Ugueto Bottom right: Live reconstruction of Leedsichthys by @knuppitalism-with-ue

The paper itself: Fossil Studies | Free Full-Text | The Diet of Metriorhynchus (Thalattosuchia, Metriorhynchidae): Additional Discoveries and Paleoecological Implications (mdpi.com)

#thalattosuchus #thalattosuchia #metriorhynchus #metriorhynchidae #leedsichthys #palaeoblr #paleontology #prehistory #jurassic

[theantiazdarcho]

Death of a leedsichthys problematicus

#paleoillustration #paleo meme #paleo art #paleontologist #paleozoic #paleoblr #paleoart #paleontology #paleostream #leedsichthys #jurassic period #rhamphorhynchus #liopleurodon #ocean #lineart #sketchbook #whale #filter feeder #sponge reef

[skyradiant]

Top twenty sea monsters for the 20th anniversary of Sea Monsters: A Walking With Dinosaurs Trilogy.

#sea monsters #chased by sea monsters #walking with #mosasaur #megalodon #liopleurodon #dunkleosteus #basilosaurus #cymbospondylus #cameroceras #archelon #xiphactinus #leedsichthys #arsinoitherium #megalograptus #pteranodon #elasmosaurus #nothosaurus #metriorhynchus #odobenocetops #hesperornis #tanystropheus #stethacanthus #mine #q

[indoraptorgirlwind]

I think ark just triggered my talassophobia even more than it was already...

#Ark #ark survival evolved #If land is already scary now imagine the ocean #I barely started and i already encountered megalodons and a fucking ledsichthys #Fucking shark almost kills my sarco #megalodon #Leedsichthys #I also spotted cnidarias and mantas

[pleistocene-pride]

Mesozoic Batch 2

#Mesozoic #jurassic #dinosaur #pterosaur #pterodactyl #pterodactylus #compsognathus #megalosaurus #archaeopteryx #dimorphodon #dilophosaurus #liopleurodon #leedsichthys #plesiosaurus #ichthyosaurus

[ailingwriter]

#223

Leedys

Earth

Mid-Range

Large

LP: High

Atk: Low

Def: Above Average

Acc: Below Average

Spd: Low

Support: Ally +Atk 10%, +Def 10%

Harden Plus and high LP gives Leedys plenty of time to support its allies with Super Enflame and an LP-Restoring move. In a pinch, it can reduce its own LP to devastate an opponent.

-

Leedsichthys

52 feet

Era: Mesozoic Jurassic

Diet: Plankton

Location: England, France, Germany, Chile

A huge filter feeder, this was the largest bony fish to ever live.

-

Leedys's body is mainly golden-yellow, but there are colorful, intertwining streaks of yellow, red, and green, appearing like tassels flowing from the head and towards the tail.

Leedys is found in curious fossil rocks. It has no super evolver.

(Thanks to @mojojax2500 for helping me figure out the name and what kind of fossil rocks you'd find them in!)

#fossil fighters #fossil fighters revival #vivosaurs #original vivosaurs #fanmade vivosaurs #leedsichthys #earth vivosaurs

[zyemuside]

The Big Snails can usually be found in redwood(mostly redwoods) or swamps on most ARK maps, though they only eat sweet veggie cakes, so a steady supply should be available before you go to tame one.

I had to cryopod mine because I didn’t have enough veggie cakes to feed them. God Luck!

thank you!

#Ark #zyemuside #I’m still working on getting a saddle for my pterosaur guy #and getting over my fear of water to get some fish meat from the Leedsichthys that’s stuck on shallow rocks #but eventually I will get myself Snail

[wjbminecraft]

Reblog if you voted.

#mineblr #minecraft #poll #polls

[artechoceneexplorer]

Hi Tumblr!! I have no idea how this thing works but I wanted to showcase some of my stuff to you all, hope you enjoy!! :>

A couple of Andalgalornis wait for their next meal to finish cooking, a ground sloth that couldn't outrun the flames.

A Leedsichthys juvenile swims next to the eye of an adult of its own species.

A mermaid and her baby encounter a deep sea camera deep in the Mediterranean sea.

An Otang (Theroanthropus africanus) treats an insect bite on his older partner's face using some chewed up medicinal plants.

A Bigfin Tiamat (Metamorphis megaloptera) swims alongside a school of Great Iricts (Nyctocaelora hemistriatus) in the Pacific ocean.

A map of Antarctica during the Artechocene period, 39my into the future.

#speculative evolution #paleoart #paleontology #speculative biology #art #illustration #creature

[wemblingfool]

Oh man, the ancient oceans would just be absolutely terrifying.

Given the insane amount of animals that have been preserved in the fossil record, it's still so incredibly sparse.

That said, we know how terrestrial creatures work at any given time, in any given ecosystem. Plop yourself down in America during the late Cretaceous, there's very little that could actually surprise you. Even with the high likely hood that your first encounter will be with a completely new species, you know how the terrestrial fauna works in this time.

Set yourself over the deep ocean, where we have never had access to fossils? When fossils we do have are highly debated and no one can decide if leedsichthys was 30 feet or 90 feet? Where animals we thought we understood for decades turned out to be really wrong (dunkleosteus)? Or where it took us decades to even figure out what the hell this thing attached to (helicoprion)?

There's just absolutely no telling what you would turn up. Even encountering something we know, it may be completely different than what we thought.

It's so terrifying, but also I can't think of a more exciting environment to explore.

#palaeoblr

[foxsnails]

I saw your gulper eel drawing, and the educational page with the cute realistic creatures immediately reminded me of Issy and the Leedsichthys.

oooohhh!!!!! This art!!!!!

i've never seen this book before but now it's on my list of books to get, thank you!!

#cool bugsex pfp btw #great moment to mention i absolutely love book recommendations btw #big fan of illustrated non fiction or children's books about nature and natural history

[opalescent-apples]

Mermay Prompts (Unofficial)- Prehistoric Edition

Anomalocaris

Trilobite

Megalodon

Essexella

Dunkleosteus

Ammonite

Icthyosaur

Plesiosaur

Cameroceras

Opabinia

Tamisiocaris borealis

Hurdia victoria

Hallucigenia

Wiwaxia

Ottoia prolifica

Haplophrentis carinatus

Isoxys

Marrella

Leanchoilia

Dickinsonia

Syllipsimopodi bideni

Styletoctopus

Tusoteuthis

Priscomyzon riniensis

Asterotrygon maloneyi

Glyphithyreus

Leedsichthys

Tylosaurus

Metriorhynchus

Kronosaurus

Prehistoric hominid (Reverse Mermaid!)

The last prompt is a bit of a wild card, with the human side being prehistoric as well as the fish.

(I personally will not be able to post every day, but I intend to fill all 31 prompts).

This is not intended to be scientific, more of an exploration of sea creature art, and the extinct sealife I see getting passed over in most MerMays. I'll still be making traditional mermaid art for most of these (with a twist). I hope you enjoy.

#Mermay #Mermay prompts #Unofficial prompts #drawing prompt

[skyradiant]

20th anniversary of "To Hell..... and Back?," the finale of Sea Monsters: A Walking With Dinosaurs Trilogy. The voyage through time came to a gruesome end November 23rd, 2003.

#sea monsters #chased by sea monsters #walking with #nigel marvin #mosasaur #liopleurodon #leedsichthys #pteranodon #tyrannosaurus rex #archelon #mine #thanksgiving but 75 million years ago the dinner is you #q

[mighty-talos]

The Gentle Emperor

One lonely Leedsichthys feeding on small fishes, followed by one stray Ichthyosaur, lurking for a chance to get some leftover.

In the latest reconstruction from Specimen BMNH P.10156, the size reaching up to 12 meters long, makes the size smaller than the previous reconstruction. But still, Leedsichthys are consider as the biggest prehistoric fish ever to unearthed.

#paleoart #digital painting #illustration #paleoillustration #paleontology #digitalart

[parakaryote]

Last night, I dreamt that I had a pack of snacks shaped like prehistoric fish - specifically Leedsichthys and Bothriolepis. Unfortunately, I woke up before I even got to open the pack.

#paleontology #dreams I had