Archelon

Archelon

Archelon Archelon is an extinct marine turtle from the Late Cretaceous, and is the largest turtle ever to have been documented, with the biggest specimen measuring 460 cm (15 ft) from head to tail, 400 cm (13 ft) from flipper to flipper, and 2,200 kg (4,900 lb) in weight. It is known only from the […]

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Cotylorhynchus

Cotylorhynchus

Cotylorhynchus Cotylorhynchus is an extinct genus of very large synapsids that lived in the southern part of what is now North America during the Early Permian  period. It is the best known member of the synapsid clade Caseidae, usually considered the largest terrestrial vertebrates of the Early Permian, though they were possibly aquatic. Cotylorhynchus was a heavily built animal with a disproportionately small head and […]

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pliosaurus

Pliosaurus

Pliosaurus Pliosaurus(meaning more lizard) is a genusofthalassophonean pliosauridknown from theKimmeridgianandTithonianstages (LateJurassic) ofEuropeandSouth America. Their diet would have includedfish,cephalopods, andmarine reptiles. This genus has contained many species in the past but recent reviews found only six to be valid, while the validity of two additional species awaits a petition to theICZN. Pliosaurus currently consists of thetype […]

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sarcosuchus-3

8 Facts About Sarcosuchus World’s Biggest Crocodile

Sarcosuchus was by far the biggest crocodile that ever lived, making modern crocs, caimans, and gators look like insignificant geckos by comparison. Below are 8 interesting Facts About Sarcosuchus. Sarcosuchus Is Also Known as the SuperCroc The name Sarcosuchus is Greek for “flesh crocodile,” but that apparently wasn’t impressive enough for the producers at National Geographic. In 2001, this cable […]

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Sarcosuchus

Sarcosuchus

Sarcosuchus Sarcosuchus (meaning flesh crocodile) is a genus of crocodyliform and distant relative of living crocodylians that lived 112 million years ago. It dates from the early  Cretaceous Period of what is now Africa and South America and is one of the largest crocodile-like reptiles that ever lived. It was almost twice as long as the modern saltwater […]

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Quetzalcoatlus-by-johnson-mortimer

Quetzalcoatlus

Quetzalcoatlus Quetzalcoatlus northropi is an azhdarchid pterosaur known from the Late Cretaceous of North America (Maastrichtian stage) and one of the largest known flying animals of all time. It is a member of the family Azhdarchidae, a family of advanced toothless pterosaurs with unusually long, stiffened necks. Its name comes from the Mesoamerican feathered serpent god, Quetzalcoatl. When […]

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Tylosaurus

Tylosaurus

Tylosaurus Tylosaurus was a mosasaur, a large, predatory marine lizard closely related to modern monitor lizards and to snakes. A distinguishing characteristic of Tylosaurus is its elongated, cylindrical premaxilla (snout) from which it takes its name and which may have been used to ram and stun prey and also in intraspecific combat. Early restorations showing Tylosaurus with a dorsal crest […]

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dicinodontos-therapsid-Triassic-period

Therapsids

Therapsida is a group of synapsids that includes mammals and their ancestors. Many of the traits today seen as unique to mammals had their origin within early therapsids, including having their four limbs extend vertically beneath the body, as opposed to the sprawling posture of other reptiles. The earliest fossil attributed to Therapsida is Tetraceratops insignis from the Lower Permian. Therapsids evolved from […]

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