Horn dinos 'two species, not one'

A debate over whether Triceratops and Torosaurus are two different life stages of the same species has been decided in a new analysis of the prehistoric specimens classifying them into two distinct groups. The study rejected 2010 research claiming the Triceratops was merely a youngster and Torosaurus was an adult of the same species. The new research, published Feb. 29 in the journal PLoS One, said the analysis of the fossils do not support the same species theory. Nicholas Longrich and Daniel Field, researchers at Yale University in New Haven, Conn., studied 35 specimens attributed to both species and concluded they represented two distinct animals. ?We looked at a bunch of changes in the skulls as the animals age and used a program to arrange the skulls from youngest to oldest,? Longrich told Neil Bowdler of BBC News. ?What we found is there are young Torosaurus individuals and very old Triceratops individuals and that?s inconsistent with Torosaurus being an adult Triceratops.? Studying the skulls and frill

Horn dinos 'two species, not one'

A study rejects claims that Triceratops and the lesser-known Torosaurus are one and the same type of dinosaur.

Wed 29 Feb 12 from BBC News

Triceratops controversy continues

Millions of years after its extinction, Triceratops is inciting controversy about how to classify the ancient animals. New analysis, published Feb. 29 in the open access journal PLoS ONE, suggests ...

Wed 29 Feb 12 from Phys.org

Triceratops controversy continues, Thu 1 Mar 12 from Labspaces.net

Triceratops wasn't one dinosaur - it was TWO species, s

The horned Triceratops is one of the most famous of all dinosaur species - but now it seems that the giant herbivore might actually be TWO species, according to Yale researchers.

Thu 1 Mar 12 from Daily Mail

Dueling Skulls: Triceratops Controversy Continues

Are Triceratops and Torosaurus two species? Researchers square off once again.

Wed 29 Feb 12 from Livescience

Triceratops And Torosaurus: Are They Really Different?

A debate over whether Triceratops and Torosaurus are two different life stages of the same species has been decided in a new analysis of the prehistoric specimens classifying them into two distinct ...

Thu 1 Mar 12 from RedOrbit

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