Post by dinosauria101 on Apr 11, 2019 15:25:57 GMT 5
Kronosaurus queenslandicus
Kronosaurus (meaning "lizard of Kronos") is an extinct genus of short-necked pliosaur. With an estimated length of 9 to 10.5 metres (30 to 34 ft), it was among the largest pliosaurs, and is named after the leader of the Greek Titans, Cronus. It lived in the Early Cretaceous period (Aptian to Late Albian). Fossil material has been recovered from the Toolebuc Formation (middle to late Albian) and Wallumbilla Formations (Aptian) of Queensland and New South Wales in Australia, and from the upper Paja Formation (late Aptian) in Boyacá, Colombia, and assigned to two species. Current estimates put Kronosaurus at around 9 to 10.5 metres (30 to 34 ft) in length. In 2009, K. queenslandicus was estimated to weigh up to 11,000 kilograms (11 t). The strength of the limb girdles, combined with evidence of large, powerful swimming muscles, indicates that Kronosaurus was likely a fast, active swimmer. Kronosaurus teeth exceed 7 centimetres (2.8 in) in length (the largest up to 30 centimetres (12 in) long with 12 centimetres (4.7 in) crowns). However, they lack carinae (cutting edges) and the distinct trihedral (three facets) of Pliosaurus and Liopleurodon teeth.
Carcharocles angustidens
Carcharocles angustidens is a species of prehistoric megatoothed sharks in the genus Carcharocles, which lived during the Oligocene and Miocene epochs about 33 to 22 million years ago. This shark is related to another extinct megatoothed shark, Carcharocles megalodon. Like other known megatooth sharks, the fossils of C. angustidens indicate that it was considerably larger than the extant great white shark, Carcharodon carcharias. The well preserved specimen from New Zealand is estimated at 9.3 m (31 ft) in length. This specimen had teeth measuring up to 9.87 cm (3.89 in) in diagonal length, and vertebral centra around 1.10 cm (0.43 in) in diameter. However, reports of larger C. angustidens fossils have been made. C. angustidens was an apex predator and likely preyed upon penguins, fish, dolphins, and baleen whales.
Credit to Wikipedia
Kronosaurus (meaning "lizard of Kronos") is an extinct genus of short-necked pliosaur. With an estimated length of 9 to 10.5 metres (30 to 34 ft), it was among the largest pliosaurs, and is named after the leader of the Greek Titans, Cronus. It lived in the Early Cretaceous period (Aptian to Late Albian). Fossil material has been recovered from the Toolebuc Formation (middle to late Albian) and Wallumbilla Formations (Aptian) of Queensland and New South Wales in Australia, and from the upper Paja Formation (late Aptian) in Boyacá, Colombia, and assigned to two species. Current estimates put Kronosaurus at around 9 to 10.5 metres (30 to 34 ft) in length. In 2009, K. queenslandicus was estimated to weigh up to 11,000 kilograms (11 t). The strength of the limb girdles, combined with evidence of large, powerful swimming muscles, indicates that Kronosaurus was likely a fast, active swimmer. Kronosaurus teeth exceed 7 centimetres (2.8 in) in length (the largest up to 30 centimetres (12 in) long with 12 centimetres (4.7 in) crowns). However, they lack carinae (cutting edges) and the distinct trihedral (three facets) of Pliosaurus and Liopleurodon teeth.
Carcharocles angustidens
Carcharocles angustidens is a species of prehistoric megatoothed sharks in the genus Carcharocles, which lived during the Oligocene and Miocene epochs about 33 to 22 million years ago. This shark is related to another extinct megatoothed shark, Carcharocles megalodon. Like other known megatooth sharks, the fossils of C. angustidens indicate that it was considerably larger than the extant great white shark, Carcharodon carcharias. The well preserved specimen from New Zealand is estimated at 9.3 m (31 ft) in length. This specimen had teeth measuring up to 9.87 cm (3.89 in) in diagonal length, and vertebral centra around 1.10 cm (0.43 in) in diameter. However, reports of larger C. angustidens fossils have been made. C. angustidens was an apex predator and likely preyed upon penguins, fish, dolphins, and baleen whales.
Credit to Wikipedia