4 – Giganotosaurus
The shoulder blade was very short and thick, with sudden kinks in its shaft. The ischium had a paddle-shaped end; the thigh bone, 1.43 m (4.7 ft) long in the holotype, had a head that was pointing relatively upwards. The mid dorsal vertebrae carried rather high spines. The total length of the holotype has been estimated between 12.2 and 12.5 m (40 and 41 ft), the largest specimen is 13.2 m (43 ft), and the weight between 6.5 and 13.8 tonnes (14,330 and 30,420 lb).
3 – Mosasaurus
Mosasaurus was among the last of the mosasaurids, and among the largest. As with most mosasaurids, the legs and feet of Mosasaurus were modified into flippers, and the front flippers were larger than the hind flippers. The largest known species, Mosasaurus hoffmannii, reached lengths up to 18 metres (59 ft).
2 – Velociraptor
Velociraptor was a mid-sized dromaeosaurid, with adults measuring up to 2.07 m (6.8 ft) long, 0.5 m (1.6 ft) high at the hip, and weighing up to 15 kg (33 lb). The skull, which grew up to 25 cm (10 in) long, was uniquely up-curved, concave on the upper surface and convex on the lower. The jaws were lined with 26–28 widely spaced teeth on each side, each more strongly serrated on the back edge than the front.
1 – Tyrannosaurus Rex
Tyrannosaurus rex was one of the largest land carnivores of all time. measured 12.3 metres (40 ft) long, and was 4 metres (13 ft) tall at the hips. Mass estimates have varied widely over the years, from more than 7.2 metric tons (7.9 short tons), to less than 4.5 metric tons (5.0 short tons), with most modern estimates ranging between 5.4 metric tons (6.0 short tons) and 6.8 metric tons (7.5 short tons). One study in 2011 found that the maximum weight of Sue, the largest Tyrannosaurus, was between 9.5 and 18.5 metric tons (9.3–18.2 long tons; 10.5–20.4 short tons)
For 6-10 click here