Jurassic Predators Had Surprisingly Sensitive Snouts
by Jeff Hecht
Pliosaurs had massive jaws, crushing teeth – and sensitive snouts. That is the conclusion of a study on an exceptionally preserved 2-metre-long fossil skull.
Pliosaurs were the top marine predators of the Jurassic, growing up to 12 metres long, but their biology is poorly understood because nothing quite like them is alive today.
Davide Foffa at the University of Bristol, UK, may now have added an important piece to the puzzle of how they detected prey. He has found channels in a pliosaur skull that probably contained nerves and blood vessels, suggesting that it had a well-developed sensory system extending to the tip of the snout.
Palaeontologists have long recognised that pliosaur skulls, like those of many other vertebrates, have small holes called foramina leading into the interior. In living species these connect to nerves. However, this is the first time anyone has been able to trace the networks inside a fossil…
big water dinosaurs are cool. I am qonna qo out on a limb and guezz yu axing me what the biggest water dinosaur was. Well big is a lil hard to define, but I can contribute a lil bit to longest water dinosaur.
On one hand we got da infamous Megalodon. He reached a total length of 16 meters (52 feet) but it has been thought that he could possibly gro up to 20.3 meters (67 feet). Imajin dat, a 67 foot shark.
But on another hand, we got a certain long Ichthyosaur named Shastasaurus. There is a bit of controversy ova his tru size, but he was suspected to have grown up to 21 meters (69 feet).
Last up we got Mauisaurus which was a type of plesiosaur (think Nessie yo, or Elasmosaurus). He grew up to 20 meters (66 feet) but wut was crazy bout im was dat his neck accounted fo 15 of dose meters (49 of dose feet)! his length was 75% neck and 25% body which make giraffes look like lil bitches
biggest water dinosaur
It wont let me post tha whole response here, so check an upcoming post por favor yo
As sad as dis may sound, I figya’d this blog mite end up like the water dinos its dedicated to… Extinct but still badazz. Yet all the recent activity has maed this rascal reconsider that && keep it goin longa still. Anyway, pictured above is Thalattoarchon Saurophagis n needless 2 say, hes a boss @$$ bitch.
As u all can prolly guess, he is an Ichthyosaur (like da Shonisaurus). He is akshully a relatively new water dinosaur that was found in Nevada in 2010 and formally described in 2013. Unfortunately, the only skeleton of my boi Thalattoarchon is still incomplete and his appearance has been sceintifically guezzed based on other Ichthyosaurs. This rascal actually looks verver similar to Cymbospondylus but a distinct characteristic bout him is dat his head is about twice as big (relative to da bod) and he has some big ol chompers.
Fun factoid: Thalattoarchon Saurophagis in Gr33k means Lizard Eating Sovereign of the Sea. Which aint too surprising given dat he was thought to be one of da FURST marine macropredators that wuz capable of eating prey that was almost da same size as himself. If that aint the hypest thing yu heard all day, then you must lead a pretty goddamn interestin life.
yoyoyo! not very often does this rascal get da chance to covah somethin that is mo o less a current event! Well today must be Not Very Often then! Above is a rapscallion known as entelognathus primordialis. His name translate to Primordial Complete Jaw and he is so impress’ because he is the first known fish/animal/organism to have a (somewhat [lol]) recognizable face. Befo him there were just feesh and shit with eyes and noses but they looked alien yo.
Their jaw is also pretti importante! It was fully formed and honestly somewhat resembles many many organisms today (including humans). Without this link in da evolutionary chain, we may all end up being ugly like eels and hagfishes (REAL ugly, not e’en tryna front)
Anyways, Entelognathus was a placoderm. Placoderms were the armored fishes that lived mainly during the Devonian. In case you have forgotten, Dunkleosteus (huge rascal) was a placoderm!
check out day strong, defined, masculine jaw! ^ I wondah who he got dat from…? hmm.??
yo yo yo! sorry bout da hiatus but when the goin gets tuff, the tuff get off tumblr fo a little while. Anywayz, im back and with me is this lil rascal, Vancleavea Campi. These guys were non-archosaurian archisauriforms, which besides soundin like it dont make no sense, what I gather from it is dat these were very early ancestors of what today is now crocodiles and certain birds. Vancleavea never got too big, averagin about 1.2 m (ruffly 4 ft) and lived during the late Triassic.
However, these lil rascals were a bit different. They differed from otha archosauriforms and tetrapods in that they tails had scale like things (called osteoderms) extending from them rather than tall neural spines. Their long fin like tail and their short limbs suggest they were semiaquatic lil ragamuffins, but I’d lean more to the aquatic side just because look at those arms…. tiny (do some curls or some’in).
Here we see Vancleavea on the long (& endless) quest fo some booty. maybe if he lifted things wuld b different. But alas, Vancleavea searches on, hopelessly…