Definitions for torosaurus
torosaurus

WiktionaryRate this definition:0.0 / 0 votes

1. torosaurusnoun

   Any herbivorous dinosaur of the genus Torosaurus

WikipediaRate this definition:0.0 / 0 votes

1. Torosaurus

   Torosaurus ("perforated lizard", in reference to the large openings in its frill) is a genus of herbivorous ceratopsid dinosaur that lived during the late Maastrichtian stage of the Cretaceous period, between 68 and 66 million years ago, though it is possible that the species range might extend to as far as 69 million years ago. Fossils have been discovered across the Western Interior of North America, from Saskatchewan to southern Texas. Torosaurus possessed one of the largest skulls of any known land animal, with the frilled skull reaching 2.77 metres (9.1 ft) in length. Torosaurus is thought to have been the same size as the contemporary Triceratops, but is distinguished by an elongated frill with large openings (fenestrae), long squamosal bones of the frill with a trough on their upper surface, and the presence of five or more pairs of hornlets (epoccipitals) on the back of the frill. Torosaurus also lacked the long nose horn seen in Triceratops prorsus, and instead resembled the earlier and more basal Triceratops horridus in having a short nose horn. Three species have been named, Torosaurus latus, T. gladius and T. utahensis. T. gladius is no longer considered a valid species, however. In 2010, the validity of Torosaurus was disputed. A study of fossil bone histology combined with an investigation of frill shape concluded that Torosaurus probably represented the mature form of Triceratops, with the bones of typical Triceratops specimens still immature and showing signs of a first development of distinct Torosaurus frill holes. During maturation, the skull frill would have been greatly lengthened and holes would have appeared in it. In 2011, 2012 and 2013 however, studies of external features of known specimens have claimed that morphological differences between the two genera preclude their synonymy. The main problems are a lack of good transitional forms, the apparent existence of authentic Torosaurus subadults, different skull proportions independent of maturation, and hole formation at an adult stage not being part of a normal ceratopsian maturation sequence. Consequently, it is still heavily debated whether Torosaurus truly is an adult Triceratops or a separate genus; though most researchers favor the latter interpretation currently.

WikidataRate this definition:0.0 / 0 votes

1. Torosaurus

   Torosaurus is a genus of ceratopsid dinosaur that lived during the late Maastrichtian stage of the Cretaceous period, between 66.8 and 65.5 million years ago. Fossils have been discovered across the Western Interior of North America, from Saskatchewan to south Texas. Torosaurus possessed one of the largest skulls of any known land animal. The frilled skull reached 2.6 metres in length. From head to tail, Torosaurus is thought to have measured about 9 m long and weighed 4 to 6 tonnes. Torosaurus is distinguished from the contemporary Triceratops by an elongate frill with large openings, long squamosal bones of the frill with a trough on their upper surface, and the presence of five or more pairs of hornlets on the back of the frill. Torosaurus also lacked the long nose horn seen in Triceratops prorsus, and instead resembled the earlier and more primitive Triceratops horridus in having a short nose horn. Two species have been named, Torosaurus latus and T. gladius. T. gladius is no longer considered a valid species, however. Recently the validity of Torosaurus has been disputed. A 2010 study of fossil bone histology concluded that Torosaurus probably represented a mature form of Triceratops, with the bones of Triceratops specimens still immature and showing signs of the development of the Torosaurus’ distinct frill holes. 2011 and 2012 studies of external features of known specimens, however, claim that external morphological differences between the two genera preclude their synonymy.

How to pronounce torosaurus?

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Numerology

1. Chaldean Numerology

   The numerical value of torosaurus in Chaldean Numerology is: 5

2. Pythagorean Numerology

   The numerical value of torosaurus in Pythagorean Numerology is: 5

References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Torosaurus
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Torosaurus
3. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=torosaurus