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It exceeded 3 m (9.8 ft) in length, and would have weighed in at around 200 kg (440 lb), much larger than any other known mustelid, living or extinct. [158] [159] [160] There were other giant otters, like Siamogale, at around 50 kg (110 lb) [161] and Megalenhydris, which was larger than a modern-day giant river otter. [162]
The plant-eating dicynodont Lisowicia bojani is the largest-known of all non-mammalian synapsids, at 4.5 m (15 ft) and 9,000 kg (20,000 lb). [65] [74] [75] The largest carnivorous therapsid was the aforementioned Anteosaurus from what is now South Africa during Middle Permian epoch. It reached 5–6 m (16–20 ft) long, and about 500–600 kg ...
The largest shark in the fossil record is the megalodon (Otodus megalodon), a colossal Neogene lamniform. The range of estimates of the maximum length for megalodon are from 17 to 20.3 m (56 to 67 ft), with a mass ranging from 65 to 114 short tons (59 to 103 t). [41] [42] [43] It is also regarded as the largest macro-predatory fish ever.
A new study posits that the ancient megalodon shark was longer and slimmer than previously believed. The ancient shark has been compared to the great white, but it may have more closely resembled ...
A new study finds that megatooth sharks’ warm-blood adaptation and giant size may have played a role in their extinction.
The Megalodon was a prehistoric shark, much like a great white ... but 60-feet long. Researchers don't actually believe it was a Megalodon, but they do think it was a giant shark: a great white ...
Fossil remains show a trend for specimens to be larger on average in the Southern Hemisphere than in the Northern, with mean lengths of 11.6 and 9.6 meters (38 and 31 ft), respectively; and also larger in the Pacific than the Atlantic, with mean lengths of 10.9 and 9.5 meters (36 and 31 ft) respectively.
It is slightly larger than the Indian rhinoceros (Rhinoceros unicornis), which can range up to a weight of 4,000 kg (8,800 lb). [92] The extinct Elasmotherium sibricum was the largest rhino to ever exist. It stood approximately 2 m (6.6 ft) tall at the shoulder, up to 5 m (16 ft) long (excluding horn), and weighed from 3,000 to 5,000 kg (6,600 ...