Within the first decades after Triceratops was described, various skulls were collected, which varied to a lesser or greater degree from the original Triceratops, named T. horridus by Marsh (from the Latin horridus; "rough, rugose", suggesting the roughened texture of those bones belonging to the type specimen, later identified as an aged individual). This variation is unsurprising, given that Triceratops skulls are large three-dimensional objects, coming from individuals of different ages and both sexes, and which were subjected to different amounts and directions of pressure during fossilization. Discoverers would name these as separate species (listed below), and came up with several phylogenetic schemes for how they were related to each other.
36u5ast8eg
Tyrannosaurus rex may have been the largest carnivore ever to walk the earth, but researchers have found it seldom picked on prey its own size. Photo / Supplied
It was the biggest-ever carnivore to stalk the land and with banana-sized teeth and a set of jawbones that could swallow a kitchen table, Tyrannosaurus rex truly earned its name as king of the dinosaurs. But now scientists may have uncovered T-rex's dirty secret - it was a prolific baby killer.
A study into the predatory habits and diet of the biggest and most ferocious of the dinosaurs has concluded that T-rex and the other members of its carnivorous theropod family preferred to dine on juvenile prey, preferably small enough to eat whole.
A study into the predatory habits and diet of the biggest and most ferocious of the dinosaurs has concluded that T-rex and the other members of its carnivorous theropod family preferred to dine on juvenile prey, preferably small enough to eat whole.
that T-rex and the other massive meat-eating dinosaurs that hunted on two legs preferred to pick on animals far smaller than themselves.