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Hadrosauroid
Hadrosauroidea is a clade or superfamily of ornithischian dinosaurs that includes the "duck-billed" dinosaurs, or hadrosaurids, and all dinosaurs more closely related to them than to ''Iguanodon''. Their remains have been recovered in Asia, Europe, Africa and the Americas. Many primitive hadrosauroids, such as the Asian '' Probactrosaurus'' and '' Altirhinus'', have traditionally been included in a paraphyletic (unnatural grouping) "Iguanodontidae". With cladistic analysis, the traditional Iguanodontidae has been largely disbanded, and probably includes only ''Iguanodon'' and perhaps its closest relatives. Classification The cladogram below follows an analysis by Andrew McDonald, 2012, and shows the position of Hadrosauroidea within Styracosterna. The cladogram below follows an analysis by Wu Wenhao and Pascal Godefroit (2012). Cladogram after Prieto-Marquez and Norell (2010). A phylogenetic analysis performed by RamÃrez-Velasco ''et al.'' (2012) found a large polytom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tethyshadros Insularis
''Tethyshadros'' ("Tethys Ocean, Tethyan hadrosauroid") is a genus of hadrosauroidea, hadrosauroid dinosaur from Trieste, Italy. The type and only species is ''T. insularis''. Discovery and naming Sometime in the 1980s, Alceo Tarlao and Giorgio Rimoli reported finding fragments of dinosaur bone while prospecting for rare bones. The abandoned quarry these were found in was only 100m inland, at Villagio del Pescatore, Trieste Province, Italy. It was from this quarry that a nearly complete hadrosaur skeleton was discovered in 1994. Lying on a vertical rockface, the specimen required a difficult excavation process, involving the removal of over 300 cubic metres of mineral and use of large equipment. Palaeontologist Fabio Della Vacchia among others served as scientific director for the excavation. Many other fossils, including various other hadrosaur specimens, were uncovered in the process. The main skeleton was not extracted until 1999. The significance of the find was immediately ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
