Following the publication of a scientific paper describing Coahuilasaurus lipani the Saurolophinae evolutionary tree has been up to date.  Coahuilasaurus was named and described by Longrich et al. This new Mexican hadrosaur is understood from the entrance finish of a cranium.  It differs from associated species in having a really quick, deep muzzle and a collection of tooth-like projections on the roof of the mouth. The genus identify is derived from the Coahuila State and the Greek “sauros” for lizard. The species identify honours the Lipani Apache tribe of northern Mexico.

It had been thought that the fossil materials represented a Kritosaurus. Nonetheless, a extra detailed evaluation revealed distinctive traits which permitted the institution of a brand new species of hadrosaur.

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The Saurolophinae Evolutionary Tree

Coahuilasaurus lipani phylogeny.

The phylogeny of Coahuilasaurus. Evolutionary tree of the Saurolophinae, displaying the relationships of Coahuilasaurus throughout the Kritosaurini. Image credit score: Longrich et al.

Image credit score: Longrich et al

The researchers carried out two phylogenetic analyses. The data used was given completely different weights, and the 2 units of outcomes are completely different. Nonetheless, the second evaluation is better-resolved and is according to the stratigraphy.

Each analyses get well three main subclades throughout the Kritosaurini tribe.

  1. Coahuilasaurus lipani, Gryposaurus utahensis, Rhinorex condrupus, and Gryposaurus notabilis.
  2. Naashoibitosaurus ostromi, Anasazisaurus horneri, and Kritosaurus navajovius.
  3. Includes the South American kritosaurins, the Austrokritosauria, in addition to “Gryposaurus” alsatei.
Gryposaurus - Hadrosaur Model available from Everything Dinosaur.

The Wild Safari Prehistoric World Gryposaurus dinosaur mannequin.

The picture (above) reveals the Gryposaurus mannequin that was launched by Safari Ltd in 2013. This determine has been retired.

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The scientific paper: “Coahuilasaurus lipani, a New Kritosaurin Hadrosaurid from the Higher Campanian Cerro Del Pueblo Formation, Northern Mexico” by Nicholas R. Longrich, Angel Alejandro Ramirez Velasco, Jim Kirkland, Andrés Eduardo Bermúdez Torres and Claudia Inés Serrano-Brañas printed within the journal MDPI Range.

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