Post by poseidon on Aug 1, 2021 15:50:04 GMT -5
Purussaurus Brasilensis
Purussaurus is an extinct genus of giant caiman that lived in South America during the Miocene epoch, from the Colhuehuapian to the Montehermosan in the SALMA classification. It is known from skull material found in the Brazilian and Peruvian Amazon, Colombian Villavieja Formation, Panamanian Culebra Formation and the Urumaco and Socorro Formations of northern Venezuela. The skull length of the largest known individual of the type species, P. brasiliensis is 1,453 millimetres (57.2 in). It has been estimated that P. brasiliensis reached about 10.3 metres (34 ft) in length, weighing about 5.16 metric tons (5.69 short tons). Another estimate gave a larger size of 12.5 metres (41 ft) in length and 8.4 metric tons (9.3 short tons) in weight, with a mean daily food intake of 40.6 kilograms (90 lb). However, these proportions have been met with a lot of scrutiny, and it is more likely that Purussaurus reached only 10.9 metres (36 ft) long and 5.6 metric tons (6.2 short tons). As only skulls have been found, the actual length is not certain. Bite force has been estimated to be around 52,500 N (around 5.3 metric tons-force).
Tylosaurus Proriger
Tylosaurus (from the ancient Greek τυλος (tylos) "protuberance, knob" + Greek σαυρος (sauros) "lizard") was a mosasaur, a large, predatory marine reptile closely related to modern monitor lizards and to snakes, from the Late Cretaceous. Tylosaurus was one of the largest mosasaurs of all time. The largest known specimen, a skeleton of T. proriger from the University of Kansas Natural History Museum nicknamed "Bunker" (KUVP 5033), has been estimated to measure between 12–15.8 meters (39–52 ft) long. Some isolated fragments have been estimated to belong to individuals measuring 14 meters (46 ft) or more. The genus exhibits Cope's rule, in which its body size has been observed to generally increase over geologic time. In North America, the earliest representatives of Tylosaurus during the Turonian and Coniacian (90-86 mya), which included early T. nepaeolicus and its precursors, typically measured 5–7 meters (16–23 ft) long and weighed between 200–500 kilograms (440–1,100 lb).[16] During the Santonian (86-83 mya), T. nepaeolicus and newly-appearing T. proriger were 8–9 meters (26–30 ft) long and weighed around 1,100 kilograms (2,400 lb). By the Early Campanian, T. proriger attained lengths of 13–14 meters (43–46 ft).
Purussaurus is an extinct genus of giant caiman that lived in South America during the Miocene epoch, from the Colhuehuapian to the Montehermosan in the SALMA classification. It is known from skull material found in the Brazilian and Peruvian Amazon, Colombian Villavieja Formation, Panamanian Culebra Formation and the Urumaco and Socorro Formations of northern Venezuela. The skull length of the largest known individual of the type species, P. brasiliensis is 1,453 millimetres (57.2 in). It has been estimated that P. brasiliensis reached about 10.3 metres (34 ft) in length, weighing about 5.16 metric tons (5.69 short tons). Another estimate gave a larger size of 12.5 metres (41 ft) in length and 8.4 metric tons (9.3 short tons) in weight, with a mean daily food intake of 40.6 kilograms (90 lb). However, these proportions have been met with a lot of scrutiny, and it is more likely that Purussaurus reached only 10.9 metres (36 ft) long and 5.6 metric tons (6.2 short tons). As only skulls have been found, the actual length is not certain. Bite force has been estimated to be around 52,500 N (around 5.3 metric tons-force).
Tylosaurus Proriger
Tylosaurus (from the ancient Greek τυλος (tylos) "protuberance, knob" + Greek σαυρος (sauros) "lizard") was a mosasaur, a large, predatory marine reptile closely related to modern monitor lizards and to snakes, from the Late Cretaceous. Tylosaurus was one of the largest mosasaurs of all time. The largest known specimen, a skeleton of T. proriger from the University of Kansas Natural History Museum nicknamed "Bunker" (KUVP 5033), has been estimated to measure between 12–15.8 meters (39–52 ft) long. Some isolated fragments have been estimated to belong to individuals measuring 14 meters (46 ft) or more. The genus exhibits Cope's rule, in which its body size has been observed to generally increase over geologic time. In North America, the earliest representatives of Tylosaurus during the Turonian and Coniacian (90-86 mya), which included early T. nepaeolicus and its precursors, typically measured 5–7 meters (16–23 ft) long and weighed between 200–500 kilograms (440–1,100 lb).[16] During the Santonian (86-83 mya), T. nepaeolicus and newly-appearing T. proriger were 8–9 meters (26–30 ft) long and weighed around 1,100 kilograms (2,400 lb). By the Early Campanian, T. proriger attained lengths of 13–14 meters (43–46 ft).