Monday, 24 November 2014

giganotosaurus

Giganotosaurus

          Name: Giganotosaurus
Meaning: Gigantic lizard
Found: Argentina
Period: 100 Million years ago (Late Cretaceous) 
Length: 13-14 meters 
Weight: 6-7 tonnes
Wikipedia:  
Giganotosaurus is a genus of carcharodontosaurid dinosaurs that lived in what is now Argentina during the early Cenomanian age of the Late Cretaceous Period, approximately some 100 to 97 million years ago.

Friday, 21 November 2014

Triceratops

Triceratops

Name: Triceratops
Meaning: Three horned face
Found: USA 
Period: 65 Million years ago (Late Cretaceous) 
Length: 29 feet 
Weight: 6.1--12 tonnes
Wikipedia: 
Individual Triceratops are estimated to have reached about 7.9 to 9.0 m (26.0–29.5 ft) in length, 2.9 to 3.0 m (9.5–9.8 ft) in height,] and 6.1–12.0 tonnes (13,000–26,000 lbin-weight. The most distinctive feature is their large skull, among the largest of all land animals. The largest known skull (specimen BYU 12183) is estimated to have been 2.5 meters (8.2 ft) in length when complete, and could reach almost a third of the length of the entire animal. It bore a single horn on the snout, above the nostrils, and a pair of horns approximately 1 m (3.3 ft) long, with one above each eye. To the rear of the skull was a relatively short, bony frill, adorned with epocippitals in some specimens. Most other ceratopsids had large fenestrae in their frills, while those of Triceratops were noticeably solid.

Tyrannosaurus rex

T-Rex hunting a Gallimimus

T-Rex



Name: Tyrannosaurus Rex 
Meaning: Tyrant lizard king 
Found: USA 
Period: 65 Million years ago (Late Cretaceous) 
Length: 40 feet 
Height: 20 feet 
Weight: 6.35 Metric tons (6,350 Kilograms)
          Strength: 22 tons bite force and size
WikipediaTyrannosaurus Rex was one of the largest land carnivores of all time; the largest complete specimen, located at the Field Museum of National History and known colloquially as FMNH PR2081 and nicknamed "Sue", measured 12.3 meters (40 ft) long, and was 4 meters (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 9.5–18.5 metric tons (9.3–18.2 long tons; 10.5–20.4 short tons), though the authors stated that their upper and lower estimates were based on models with wide error bars and that they "consider [them] to be too skinny, too fat, or too disproportionate". Packard et al. (2009) tested dinosaur mass estimation procedures on elephants and concluded that those of dinosaurs are flawed and produce over-estimations; thus, the weight of Tyrannosaurus could have been much less than previously thought. Other estimations have concluded that the largest known Tyrannosaurus specimens had masses approaching or exceeding 9 tonnes. The neck of Tyrannosaurus Rex formed a natural S-shaped curve like that of other theropods, but was short and muscular to support the massive head. The forelimbs had only two clawed fingers, along with an additional small metacarpal representing the remnant of a third digit. In contrast the hind limbs were among the longest in proportion to body size of any theropod.