<i>Issi saaneq</i> gen. et sp. nov.—A New Sauropodomorph Dinosaur from the Late Triassic (Norian) of Jameson Land, Central East Greenland

The Late Triassic (Norian) outcrops of the Malmros Klint Formation, Jameson Land (Greenland) have yielded numerous specimens of non-sauropod sauropodomorphs. Relevant fossils were briefly reported in 1994 and were assigned to <i>Plateosaurus trossingensis</i>. However, continuous new fin...

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Autores principales:	Victor Beccari, Octávio Mateus, Oliver Wings, Jesper Milàn, Lars B. Clemmensen
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	sauropodomorph Triassic plateosaurid dinosaur Greenland Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/ecc59d7205674d399004140f230c24de
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spelling	oai:doaj.org-article:ecc59d7205674d399004140f230c24de2021-11-25T17:22:41Z<i>Issi saaneq</i> gen. et sp. nov.—A New Sauropodomorph Dinosaur from the Late Triassic (Norian) of Jameson Land, Central East Greenland10.3390/d131105611424-2818https://doaj.org/article/ecc59d7205674d399004140f230c24de2021-11-01T00:00:00Zhttps://www.mdpi.com/1424-2818/13/11/561https://doaj.org/toc/1424-2818The Late Triassic (Norian) outcrops of the Malmros Klint Formation, Jameson Land (Greenland) have yielded numerous specimens of non-sauropod sauropodomorphs. Relevant fossils were briefly reported in 1994 and were assigned to <i>Plateosaurus trossingensis</i>. However, continuous new findings of early non-sauropod sauropodomorphs around the globe facilitate comparisons and allow us to now revise this material. Here, the non-sauropod sauropodomorph <i>Issi saaneq</i> gen. et sp. nov. is described based on two almost complete and articulated skulls. The two skulls represent a middle-stage juvenile and a late-stage juvenile or subadult. <i>Issi saaneq</i> differs from all other sauropodomorphs by several unique traits: (1) a small foramen at the medial surface of the premaxilla; (2) an anteroposteriorly elongated dorsoposterior process of the squamosal; (3) a relatively high quadrate relative to rostrum height; (4) a well-developed posterodorsal process of the articular. These features cannot be explained by taphonomy, ontogeny, or intraspecific variation. <i>Issi saaneq</i> shows affinities to Brazilian plateosaurids and the European <i>Plateosaurus</i>, being recovered as the sister clade of the latter in our phylogenetic analysis. It is the northernmost record of a Late Triassic sauropodomorph, and a new dinosaur species erected for Greenland. <i>Issi saaneq</i> broadens our knowledge about the evolution of plateosaurid sauropodomorphs.Victor BeccariOctávio MateusOliver WingsJesper MilànLars B. ClemmensenMDPI AGarticlesauropodomorphTriassicplateosauriddinosaurGreenlandBiology (General)QH301-705.5ENDiversity, Vol 13, Iss 561, p 561 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	sauropodomorph Triassic plateosaurid dinosaur Greenland Biology (General) QH301-705.5
spellingShingle	sauropodomorph Triassic plateosaurid dinosaur Greenland Biology (General) QH301-705.5 Victor Beccari Octávio Mateus Oliver Wings Jesper Milàn Lars B. Clemmensen <i>Issi saaneq</i> gen. et sp. nov.—A New Sauropodomorph Dinosaur from the Late Triassic (Norian) of Jameson Land, Central East Greenland
description	The Late Triassic (Norian) outcrops of the Malmros Klint Formation, Jameson Land (Greenland) have yielded numerous specimens of non-sauropod sauropodomorphs. Relevant fossils were briefly reported in 1994 and were assigned to <i>Plateosaurus trossingensis</i>. However, continuous new findings of early non-sauropod sauropodomorphs around the globe facilitate comparisons and allow us to now revise this material. Here, the non-sauropod sauropodomorph <i>Issi saaneq</i> gen. et sp. nov. is described based on two almost complete and articulated skulls. The two skulls represent a middle-stage juvenile and a late-stage juvenile or subadult. <i>Issi saaneq</i> differs from all other sauropodomorphs by several unique traits: (1) a small foramen at the medial surface of the premaxilla; (2) an anteroposteriorly elongated dorsoposterior process of the squamosal; (3) a relatively high quadrate relative to rostrum height; (4) a well-developed posterodorsal process of the articular. These features cannot be explained by taphonomy, ontogeny, or intraspecific variation. <i>Issi saaneq</i> shows affinities to Brazilian plateosaurids and the European <i>Plateosaurus</i>, being recovered as the sister clade of the latter in our phylogenetic analysis. It is the northernmost record of a Late Triassic sauropodomorph, and a new dinosaur species erected for Greenland. <i>Issi saaneq</i> broadens our knowledge about the evolution of plateosaurid sauropodomorphs.
format	article
author	Victor Beccari Octávio Mateus Oliver Wings Jesper Milàn Lars B. Clemmensen
author_facet	Victor Beccari Octávio Mateus Oliver Wings Jesper Milàn Lars B. Clemmensen
author_sort	Victor Beccari
title	<i>Issi saaneq</i> gen. et sp. nov.—A New Sauropodomorph Dinosaur from the Late Triassic (Norian) of Jameson Land, Central East Greenland
title_short	<i>Issi saaneq</i> gen. et sp. nov.—A New Sauropodomorph Dinosaur from the Late Triassic (Norian) of Jameson Land, Central East Greenland
title_full	<i>Issi saaneq</i> gen. et sp. nov.—A New Sauropodomorph Dinosaur from the Late Triassic (Norian) of Jameson Land, Central East Greenland
title_fullStr	<i>Issi saaneq</i> gen. et sp. nov.—A New Sauropodomorph Dinosaur from the Late Triassic (Norian) of Jameson Land, Central East Greenland
title_full_unstemmed	<i>Issi saaneq</i> gen. et sp. nov.—A New Sauropodomorph Dinosaur from the Late Triassic (Norian) of Jameson Land, Central East Greenland
title_sort	<i>issi saaneq</i> gen. et sp. nov.—a new sauropodomorph dinosaur from the late triassic (norian) of jameson land, central east greenland
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/ecc59d7205674d399004140f230c24de
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<i>Issi saaneq</i> gen. et sp. nov.—A New Sauropodomorph Dinosaur from the Late Triassic (Norian) of Jameson Land, Central East Greenland

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