Post by dinosauria101 on Oct 20, 2019 20:14:20 GMT 5
Purussaurus brasiliensis
Purussaurus is an extinct genus of giant caiman that lived in South America during the Miocene epoch, 8 million years ago. It is known from skull material found in the Brazilian, Colombian and Peruvian Amazonia, and 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 6.2 tons. Bite force has been estimated to be around 69,000 N (around 7 metric tons-force).. Two other extinct crocodilians, Sarcosuchus and Deinosuchus, have similar proportions, but both are geologically much older, dating from the Early and Late Cretaceous, respectively, and another from the Miocene of India, Rhamphosuchus, is estimated to be slightly smaller, though assumed to have been proportioned like a gharial. During the summer of 2005, a Franco-Peruvian expedition (the Fitzcarrald expedition) found new fossils of Purussaurus in the Peruvian Amazon (600 km from Lima).
Carcharocles subauriculatus
Carcharocles subauriculatus is an extinct species of prehistoric megatoothed sharks in the genus Carcharocles, that lived during Oligocene, Miocene, and Pliocene epochs, approximately 28 – 5 million years ago. This shark is considered to be a close relative of the famous prehistoric megatoothed shark, C. megalodon. Carcharocles subauriculatus was larger than C. angustidens. Teeth of C. subauriculatus can approach 130 millimetres (5.1 in) in slant height (diagonal length), which according to a size estimation method proposed by Gottfried at al, in 1996, indicate a 12.2 m (40 ft) long specimen. Carcharocles subauriculatus was likely an apex predator and commonly preyed upon fish, sea turtles, cetaceans (e.g. whales), and sirenids.
Credit to Wikipedia
NOTE: Given what we know about modern sharks and crocodilians this can most likely be considered sympatric
sharkboy101 , here you go!
Purussaurus is an extinct genus of giant caiman that lived in South America during the Miocene epoch, 8 million years ago. It is known from skull material found in the Brazilian, Colombian and Peruvian Amazonia, and 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 6.2 tons. Bite force has been estimated to be around 69,000 N (around 7 metric tons-force).. Two other extinct crocodilians, Sarcosuchus and Deinosuchus, have similar proportions, but both are geologically much older, dating from the Early and Late Cretaceous, respectively, and another from the Miocene of India, Rhamphosuchus, is estimated to be slightly smaller, though assumed to have been proportioned like a gharial. During the summer of 2005, a Franco-Peruvian expedition (the Fitzcarrald expedition) found new fossils of Purussaurus in the Peruvian Amazon (600 km from Lima).
Carcharocles subauriculatus
Carcharocles subauriculatus is an extinct species of prehistoric megatoothed sharks in the genus Carcharocles, that lived during Oligocene, Miocene, and Pliocene epochs, approximately 28 – 5 million years ago. This shark is considered to be a close relative of the famous prehistoric megatoothed shark, C. megalodon. Carcharocles subauriculatus was larger than C. angustidens. Teeth of C. subauriculatus can approach 130 millimetres (5.1 in) in slant height (diagonal length), which according to a size estimation method proposed by Gottfried at al, in 1996, indicate a 12.2 m (40 ft) long specimen. Carcharocles subauriculatus was likely an apex predator and commonly preyed upon fish, sea turtles, cetaceans (e.g. whales), and sirenids.
Credit to Wikipedia
NOTE: Given what we know about modern sharks and crocodilians this can most likely be considered sympatric
sharkboy101 , here you go!