prehistoric turtle


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Welp i said what i was going to do and so behold! Giraffes! Plesiosaurs! Giant Sea Turtles! AND MOST IMPORTANTLY A FAT PUG!!!! (to apologise for the giant arachnid. Have fun slaying that thing.) 

  • Mayura, (Peacock)
  • Gerfauntz, (Giraffe)
  • Niseag, (Plesiosaur)
  • Zaratan, (Sea Turtles/Archelon)
  • The Nope, (Whip Scorpion)
  • Grimble, (Pug)

There will be more (I know @shoddymoddy and @niklisson both want cat grimm). Honestly, I’d end up doing an entire post on prehistoric and deep sea grimm because that map of Remnant has a lot of water and many islands so naturally there would be grimm to reflect the animals in those environments. 

Who’s up for Jurassic Remnant >v> ?

Also check out @ask-team-clst and their Big Book of Grimm tag, as they’ve done bios for the first batch of grimm (x)


10. ANOMALOCARIS (~ 525 Ma)
This one metre long invertebrate surely deserves to be included on the list, being one of the first complex oceanic predators to ever have existed. Anomalocaris stalked the Cambrian oceans, viewing the world with a deadly new evolutionary innovation - eyes. Complex eyes allowed this creature to storm its way to the top of the food chain, and with powerful appendages covered in spines it had no trouble devouring prey with tough carapaces. Whilst Anomalocaris is dwarfed by the other contenders on this list, it was still over 10 times larger than any other animal of its time.

9. KRONOSAURUS (125-99 Ma)
Kronosaurus, a Cretaceous mosasaur, is named after the Greek titan, Cronus. Its name is well deserved as this ancient beast was a remarkably powerful being. Kronosaurus could reach up to 10 metres long and had a mouth full of sharp, conical teeth. Unlike most other mosasaurs its tail was relatively short, however, evidence shows that Kronosaurus has immensely powerful fins and a pectoral girdle making it an impressive swimmer and hunter.

8. HELICOPRION (290-250 Ma)
Helicoprion has astounded scientists since its discovery over 100 years ago. It is iconic for its bizarre spiral of teeth, there are still debates on where exactly these teeth where on the shark with proposals stating they were inside the mouth, on the tip of the tail, the dorsal fin or hanging under the jaw. The most commonly accepted location of the teeth is inside the lower jaw enabling Helicoprion to cleanly slice its prey into pieces.

7. XIPHACTINUS (~110-70 Ma)
Xiphactinus was an extraordinary fish that lived during the Cretaceous. It was an esteemed predator that could reach an incredible 6 metres in length and specimens are renowned for their stunning preservation. One such example was 4 metres long and found with another exceptionally well preserved fish just short of 2 metres inside it implying that this particular Xiphactinus individual died shortly after its last feast. Xiphactinus had immensely sharp, slim teeth and an unmistakable underbite which was a possible aid when snaring creatures from below.

6. TYLOSAURUS (86-75 Ma)
Tylosaurus is considered a mosasaur and was a vivacious predator all be it smaller than its relative Mosasaurus. Tylosaurus could reach up to 15 metres in length and was one of the apex predators of its day. Fossilised stomach contents of Tylosaurus contain fish, sharks, turtles and other marine reptiles. Despite having an impressive set of teeth, the frontal areas of the jaws exhibit a large reduction in tooth size as well as a more heavily reinforced snout in comparison to other mosasaurs suggesting that Tylosaurus may have rammed into victims with immense force damaging prey internally.

5. MOSASAURUS (70-66 Ma)
The mosasaurs ruled the Cretaceous oceans and Mosasaurus was no exception. It could reach up to 17 metres long, longer than most other mosasaurs. Mosasaurus had a strong jaw packed with numerous conical teeth, bite marks of which have been found in huge prehistoric turtles and ammonites suggesting that Mosasaurus was a formidable hunter capable of catching large prey. Mosasaurus was a profound swimmer with strong paddle-like limbs and a huge tail capable of rapidly accelerating the animal when required.

4. DUNKLEOSTEUS (382-358 Ma)
Dunkleosteus terrorised the oceans around 370 million years ago and was part of a dynasty known as the placoderm fish (meaning armoured). Dunkleosteus could reach a whopping 6-10 metres in length and probably weighed over a ton. The skull was made up of huge, solid bony plates giving unrivalled protection allowing them to dominate the oceans. Placoderm fish were some of the first organisms to have a mobile jaw, as can be seen in Dunkleosteus’ impressive shearing plates which were used to slice cleanly through prey. Despite an revolutionary jaw, Dunkleosteus could not chew and several fossilised regurgitated remains of its meals have been found that the giant fish simply could not stomach.  

3. DAKOSAURUS (157-137 Ma)
Dakosaurus was the largest of a group of marine reptiles that were distant relatives of crocodiles. Dakosaurus could reach up to 5 metres long and had a streamlined body with large paddle-like fins and a long muscular tail implying that is was a very efficient swimmer. The diet of Dakosaurus consisted mostly of fish. The teeth of Dakosaurus are lateromedially compressed and serrated which is a similar morphology to modern killer whales indicating that Dakosaurus was an apex predator of the Jurassic oceans. Skull fenestrae provides evidence that Dakosaurus had very large adductor muscles (which are responsible for the jaw closing) and so it was certainly capable of a forceful bite.

2. LIOPLEURODON (160-155 Ma)
Liopleurodon stormed the Jurassic oceans, its huge 7 metre long frame effortlessly cruised through the water. The skull itself could reach a massive 1.5 metres long with a jaw that was packed with teeth up to 10cm long and was capable of an immense bone-crushing force. Liopleurodon was a remarkable hunter with the ability to swim with its nostrils open and so could use its powerful sense of smell to track prey from afar, much like sharks do. Liopleurodon most likely had good camouflage such as a lighter underside and a darker topside so it would blend in with the water to prey above and below.  

1. MEGALODON (~16-2.6 Ma)
Megalodon rightfully deserves the top position of the greatest prehistoric ocean predators, ruling the seas for an incredible 14 million years. Megalodon has been estimated to reach up to 18 metres in length and weighing over 40 tonnes. Megalodon is known for its huge 6 inch teeth which were serrated on both sides for an efficient slicing action. Fossils of Megalodon’s prey have also been found, the shark appeared to have adapted its hunting tactics for different sized prey; for smaller prey they would just use their bone crushing bite to pulverise internal organs, but for larger prey they would bite or rip flippers off of creatures to immobilise them and then go in for the kill.
The exact bite force of Megalodon has been estimated at around 110,000 N which was more than enough to shatter even the most robust bones. The hunting methods of Megalodon will unfortunately remain a mystery but it was been hypothesised that they swam at great depths and used short bursts of speed to swim up and tear into their preys vulnerable underbelly.
Sharks have existed for over 420 million years and still continue to be some of the most successful predators alive, Megalodon is a perfect example of how deadly they can be.

anonymous asked:

because im super tsukki trash, domestic tsukki headcanons pleeeaaasee :>

Tsukki trash UNITE!! And in sad news, I’m out of Mike and Ike’s :(((( 

~~Admin Keiji


Tsukishima domestic HCs:

  • One of Kei’s biggest pet peeves are dishes left in the sink for more than a day. So every night, you two will stand at the sink and do dishes together. He insists on being the washer because drying is too bothersome to him. It’s a nice way to guarantee you spend at least a little time together everyday.
  • You didn’t grow up in a household that announces arrivals and departures at the door, so it’s weird for you at first when Kei always said “I’m leaving!” or “I’m home!” You slowly got used to it, and you’re not sure if you could go back to never announcing yourself
  • Pillow forts are actually a thing. Even though you’re both adults, you channel the inner child within on Saturday movie nights.
  • Kei insists on sleeping on the left side of the bed, but you like to sleep closer to the door. Because of this, you had to rearrange the entire room once you two realized the left was near the door. 
  • Never let that boy paint a wall a new color. The first (and only) time you let him try, he painted the baseboards an awful green. Thankfully, you caught it in time. There’s now a couch in front of it.
  • You go every other week with making dinner. You liked to make more traditional Japanese foods, but Kei was better at cooking western food> Switching who cooks puts a nice balance in your diet.
  • Speaking of diet, you are 100% content with buying convenience store bento everyday. When Kei found out, he was appalled. Now all the ladies at work have asked you at least once about how to make such a wonderful bento for their boyfriends. They’re in shock when you say that Kei made it!
  • Kei is a super cuddler, contrary to appearance. He has a hard time falling asleep if he’s not wrapped around you. He also hates getting up in the morning when he has to leave the warmth of you and the bed.
  • You decide to get a pet together, but neither of you are confident enough to get a high maintenance animal, so you get a turtle. He names it Archelon, after the prehistoric turtle. You call him Archie. Kei pretends he hates the nickname, but he secretly thinks it’s really cute. 
Cryptid ABCs: Zaratan

Zaratan is the name given to a giant sea turtle with a shell that looks like sloped land. The creature submerges itself at nightfall, dragging down everything around it. The Zaratan is also sometimes depicted as a giant whale or octopus.

Most reports of the creature came from sailors who saw mysterious moving islands. Some were not so lucky as to only pass it by. Some ships would mistake it a land and drop anchor, only to be dragged beneath the waves at nightfall as the turtle submerged again.

When the Zaratan hunts, it opens it’s mouth to release a sweet odor. Fish are attracted to the smell and swim in, and the beast snaps it’s jaws shut behind them. Zaratan is basically a giant snapping turtle.

The main explanation put forth for these sightings is a prehistoric turtle. Several turtle species used to be absolutely massive and much bigger than humans. It’s possible that water distortion made them look even bigger. Still, the idea that it was the size of a small island doesn’t quite make sense, and can most likely being chalked up to simply being a sailor’s tale. If it is a whale rather than a turtle, perhaps a whale that lingered too long at the top of the ocean is to blame, and it had some algae or moss growing on its back. Sailors could have mistaken it for a small island, and then been dragged down when the whale left.

interesting fact: 

animal that lives near me that people are normally afraid of: 
The Alligator

This animal is not actually scary. It is a big fat water lizardthing that lays around in the sun and will not bother you unless you are dumb enough to be swimming around in reedy, dark, suspiciously swampy-ass lookin’ water. This animal is cool and ordinarily causes no trouble unless people have been feeding it or have encroached on its natural territory. This animal does not attack boats. This animal lays around with his mouth open because he’s getting warm. 

Animal that lives near me that I actually am concerned about (not the guy in the hat, he is probably relatively harmless)

Alligator Snapping Turtle. 

This bad boy can be huge. That mouth can and will take off your fingers and toes. Even a small one can fuck your hands or feet up something good. He likes to live not only in swampy-ass gator waters, but also in nice clear streams and rivers where you like to go swimming barefoot. He hangs out under logs and in hollows with his maw hangin open waiting for a yummy fish to come by. He will also accept your toes and fingers as possible food. He likes to get hung up while you are fishing, meaning that you will possibly have to reel him in and remove the hook and line from him while he is trying to bite your hands off. He is a prehistoric turtle-kaiju made of pure hatred that can bite a broomstick in two. He will fuck you up. He is the reason parents yell at their children not to stick their hands or feet in underwater holes. He is hatred. He is murder. Respect the alligator snappin turtle. 

If tha 1rst thing that came to yo mind was butterfly turtle, then we in the same goddamn boat. This was Henodus and he was an odd lil rascal. He may look quite like a lil turt-turt, but there were some anatomical differences as well yo. Turtles got limbs situated inside their ribcage where this rascal had normally positioned limbs (not that you can tell cuz of his funky lil shell).

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Even with his “normal” limbs doe, they were apparently pretty weak (doesnt even lift) and suggested lil Heno spent little to no time on land. The water called to lil Heno and he answered. Although Henodus is a placodont (marine reptiles usually not very large) he seems to be an exception cuz he lived more in brackish (salty-fresh water) or fre$hwater lagoons rather than tha big open sea. 

Anyways, Henodus lived in the waters of the Late Triassic. Being a placodont, he usually never got bigga than a meter long (tree feet). Besides that strange lil rascal on his back tho, another funfact characteristic was that he only had 2 teeth! One on each side and a beak in da middle. 

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Not much tops da Henodus in terms of strange water dinosaurs. He was a swimming bloq if yu aks me.