Strangest Prehistoric Animals in the World

1) Josephoartigasia :
Josephoartigasia is AN extinct genus of large gnawing animal from the first to Late Pliocene epoch concerning the living pacarana. The genus includes the most important illustrious gnawing animal, Josephoartigasia monesi. the 2 species would have resembled large pacarana, or capybaras the scale of cows.The species is one in every of 2 within the Josephoartigasia genus, the opposite being J. magna. J. monesi is typically referred to as the large pacarana, once its nighest living relative, the pacarana within the family Dinomyidae. The species might have weighed a large amount, significantly larger than its nighest living relative, the pacarana.

Strangest Prehistoric Animals in the World

The rodent’s alarming front teeth and enormous size might are wont to fight over females for breeding rights and will even have helped defend against predators, as well as carnivorous marsupials, saber-toothed cats, and terror birds.The placental eutherian might have lived in an water surroundings or a delta system with forest communities,and may have eaten soft vegetation.It has been explicit that J. monesi most likely wolfed aquatic plants and fruits, as a result of its molars area unit tiny and not smart for grass or alternative abrasive . Larger mammals even have the advantage of access to low-quality food resources, similar to wood, that smaller species area unit unable to digest.
2) Deinotherium :
Deinotherium is that the “terrible beast”, lived twenty one million years agone.It is a form of elephants shorter trunk, and had a sickle-shaped tusks down that is hooked up to the jowl.Deinotherium is that the genus of the family Deinotheriidae, that evolved from the smaller, early epoch Prodeinotherium. These proboscideans represent a completely distinct line of biological process descent to it of alternative elephants, one that most likely diverged terribly early within the history of the cluster as an entire. the massive cluster to that elephants belong once contained many alternative connected groups: besides the deinotheres, there have been the gomphotheres. 3 species area unit recognized, all of nice size. Deinotherium giganteum is that the species, and is delineate on top of. it’s primarily a late epoch species, most typical in Europe, and is that the solely species illustrious from the circum-Mediterranean. Its last reportable incidence is from the center Pliocene epoch of Balkan nation. a whole bone, found within the Lower Pliocene epoch beds of Eppelsheim, Hesse-Darmstadt in 1836, was four foot long and three foot wide, indicating AN animal surpassing fashionable elephants in size. Deinotherium indicum is that the Asian species, illustrious from Republic of India and West Pakistan. it’s distinguished by a a lot of strong dentition and p4-m3 intravalley tubercles.
3) Phorusrhacids:
Phorusrhacids, informally referred to as terror birds, area unit AN extinct biological group of huge carnivorous wingless birds that were the most important species of apex predators in South America throughout the Cenozoic era; their temporal vary covers from sixty two to one.8 million years agone.They were roughly 1–3 metres tall. Their nighest contemporary relatives area unit believed to be the eighty cm-tall seriemas. Titanis walleri, one in every of the larger species, is additionally illustrious in North America from Texas and Everglade State. This makes the phorusrhacids the sole illustrious massive South yank predator to migrate north throughout the good yank Interchange, that commenced once the Isthmus of Panama land bridge rose regarding ten to fifteen Ma. Most phorusrhacids were in no time and agile. All members possessed an oversized, sharp beak, a strong neck and sharp talons. However, even with these attributes, the phorusrhacids area unit assumed to possess preyed on smaller animals that would be sent with a minimum of struggle. this can be because of the actual fact that with the phorusrhacids’ beak proportions, the jaw couldn’t generate an excellent deal of bite force with that to kill the prey.
4) Quetzalcoatlus :
The first Quetzalcoatlus fossils were discovered in Texas, u. s.. It lived around seventy to sixty five.5 million years agone.It is one in every of the most important illustrious flying animals of all time. it’s a member of the family Azhdarchidae, a family of advanced toothless pterosaurs with outstandingly long, stiffened necks. Its name comes from the Mesoamerican feathered serpent god Quetzalcoatl.

Strangest Prehistoric Animals in the World

Mass estimates for big azhdarchids area unit very problematic as a result of no existing species share an identical size or body arrange, and in consequence printed results vary wide. whereas some studies have traditionally found very low weight estimates for Quetzalcoatlus, as low as seventy kilograms.
5) Deinocheirus:
Deinocheirus could be a genus of huge ornithomimosaur that lived throughout the Late Cretaceous around seventy million years agone. In 1965, a try of huge arms, shoulder girdles, and a number of alternative bones of a replacement archosaurian were 1st discovered within the Nemegt Formation of Mongolia. In 1970, this specimen became the example of the sole species at intervals the genus, ornithomimid mirificus; the genus name is Greek for “horrible hand”.Deinocheirus was AN uncommon ornithomimosaur, the most important of the biological group at eleven m (36 ft) long, and deliberation vi.36 t . although it had been a large animal, it had several hollow bones that saved weight. The arms were among the most important of any two-footed archosaurian at two.4 m long, with large, blunt claws on its three-fingered hands. The legs were comparatively short, and bore blunt claws. Its vertebrae had tall neural spines that fashioned a “sail” on its back.The classification of ornithomimid was long unsure, and it had been at the start placed within the theropod dinosaur cluster carnosauria, however similarities with ornithomimosaurians were before long noted. once a lot of complete remains were found, ornithomimid was shown to be a primitive ornithomimosaurian, most closely concerning the smaller genera Garudimimus and Beishanlong, along forming the family Deinocheiridae. Members of this cluster weren’t custom-made for speed, in contrast to alternative ornithomimosaurs. ornithomimid is assumed to possess been omnivorous; its bone form indicates a diet of plants, fish scales were found in association with one specimen and gastroliths were additionally gift within the abdomen region of the specimen.
6) Microraptor :Microraptor was a genus of tiny, four-winged paravian dinosaurs. varied healthy fossil specimens are recovered from Liaoning, China. They originate the first Cretaceous Jiufotang Formation , one hundred twenty million years agone. 3 species are named, although any study has steered that each one of them represent variation in a very single species, that is correctly referred to as M. zhaoianus. Cryptovolans, at the start delineate as another four-winged archosaurian, is typically thought-about to be a equivalent word of Microraptor.well-preserved fossils of Microraptor give vital proof regarding the biological process relationship between birds and dinosaurs. Microraptor had long pennaceous feathers that fashioned mechanics surfaces on the arms and tail however additionally on the legs.Microraptor was among the foremost ample non-avialan dinosaurs in its scheme, and therefore the genus is delineated by a lot of fossils than the other dromaeosaurid, with presumably over three hundred fossil specimens delineated across varied repository collections.
7) Therizinosauridae
Therizinosauridae (“reaper lizards”) could be a family of theropod dinosaur dinosaurs whose fossil remains are dated to the Mid-to-Late Cretaceous period (100 to seventy mya). although representative fossils have solely been found throughout China, Mongolia, and therefore the u. s., the vary of Therizinosauridae was believed to possess spanned abundant of the supercontinent of Laurasia at its height.Therizinosauridae was named once the massive, claw-bearing horny structure found on the hand of members within the cluster. This feature has diode to very little insight regarding the ecology of the family, and therefore the purpose of the claw remains unknown.Other notable aspects of the physiology of those animals embrace a changed pelvis, strong hind-limbs, and a extremely derived, nearly vertebrate inner-ear. Moreover, the larger taxonomic cluster of Therizinosauroidea is believed to be the earliest group during which straightforward feathers are documented.Research into therizinosaurids has additionally centered on uncovering a lot of regarding the distinctive ecology and fossilology of the family. a good portion of recent analysis has focused on the feeding-patterns of those reptiles, as they’re thought-about to be the most effective regarded candidate for the emergence of herbivory at intervals Theropoda.
8) Helicoprion:

Helicoprion could be a long-lasting genus of extinct, shark-like eugeneodontid holocephalid fish. most fossil specimens area unit of spirally organized clusters of the individuals’ teeth, referred to as “tooth whorls.” Helicoprion 1st arose within the oceans of the first Permian period. 290 million years agone, survived the Permian–Triassic extinction event, and eventually became extinct throughout the first Triassic period, 250 million years agone. Its name is Greek for “spiral saw”.

 Strangest Prehistoric Animals in the World

The nighest living relatives of Helicoprion area unit the chimaeras. the sole illustrious fossils of this genus on record were their teeth, that were organized in a very “tooth-whorl” powerfully admire a power saw. because the skeletons of chondrichthyid fish area unit manufactured from animal tissue, as well as those of Helicoprion and alternative eugeneodonts, the whole body disintegrates once it begins to decay, unless exceptional circumstances preserve it. it had been not till the invention of the bone of a connected genus of eugeneodont, Ornithoprion, that it had been complete that the tooth-whorl was within the jowl. The tooth-whorl delineated all the teeth made by that individual within the lower jaw; because the individual grew, the older, smaller teeth were captive into the middle of the whorl by larger newer teeth showing.

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