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Keywords = ornithischia

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32 pages, 19074 KB  
Article
A New Basal Neornithischian Dinosaur from the Phu Kradung Formation (Upper Jurassic) of Northeastern Thailand
by Sita Manitkoon, Uthumporn Deesri, Bouziane Khalloufi, Thanit Nonsrirach, Varavudh Suteethorn, Phornphen Chanthasit, Wansiri Boonla and Eric Buffetaut
Diversity 2023, 15(7), 851; https://doi.org/10.3390/d15070851 - 13 Jul 2023
Cited by 12 | Viewed by 17543
Abstract
An exceptional articulated skeleton of a new basal neornithischian dinosaur, Minimocursor phunoiensis gen. et sp. nov., was discovered in the Late Jurassic Phu Kradung Formation at the Phu Noi locality, Kalasin Province, Thailand, a highly productive non-marine fossil vertebrate locality of the Khorat [...] Read more.
An exceptional articulated skeleton of a new basal neornithischian dinosaur, Minimocursor phunoiensis gen. et sp. nov., was discovered in the Late Jurassic Phu Kradung Formation at the Phu Noi locality, Kalasin Province, Thailand, a highly productive non-marine fossil vertebrate locality of the Khorat Plateau. It is one of the best-preserved dinosaurs ever found in Southeast Asia. Minimocursor phunoiensis gen. et sp. nov. shows a combination of both plesiomorphic and apomorphic characters resembling those of Late Jurassic to Early Cretaceous small-bodied ornithischians from China: a low subtriangular boss is projected laterally on the surface of the jugal, the brevis shelf of the ilium is visible in lateral view along its entire length, a distinct supraacetabular flange is present on the pubic peduncle of the ilium, the prepubis tip extends beyond the distal end of the preacetabular process of the ilium, and the manus digit formula is ?-3-4-3-2. The phylogenetic analysis shows that this dinosaur is among the most basal neornithischians. This study provides a better understanding of the early evolution and taxonomic diversity of ornithischians in Southeast Asia. Full article
(This article belongs to the Collection Feature Papers in Phylogeny and Evolution)
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15 pages, 4442 KB  
Article
New Fossils of Stegosaurs from the Upper Jurassic of the Eastern Iberian Peninsula (Spain)
by Sergio Sánchez-Fenollosa, Maite Suñer and Alberto Cobos
Diversity 2022, 14(12), 1047; https://doi.org/10.3390/d14121047 - 29 Nov 2022
Cited by 8 | Viewed by 6277
Abstract
The eastern Iberian Peninsula is one of the places with most stegosaur fossils in all of Europe. In the present study, we describe new remains from six different fossil sites from the Upper Jurassic of the Villar del Arzobispo Formation (Kimmeridgian–Tithonian). The remains [...] Read more.
The eastern Iberian Peninsula is one of the places with most stegosaur fossils in all of Europe. In the present study, we describe new remains from six different fossil sites from the Upper Jurassic of the Villar del Arzobispo Formation (Kimmeridgian–Tithonian). The remains comprise: a left humerus from CT-61 (El Castellar, Teruel), a dermal spine from Puntal de la Magdalena (Alpuente, Valencia), two caudal neural arches and five caudal vertebrae from Cañada París (Alpuente, Valencia), two caudal centra from Alpuente (Valencia) and four caudal vertebrae from Barrihonda-El Humero (Riodeva, Teruel). The left humerus (CT-61-1) and dermal spine (MPA D-110) are referred to Stegosauria indet. The caudal vertebrae from Alpuente (Cañada París specimen, MPA-653 and MPA D-1086) are referred to cf. Dacentrurus sp. Finally, the caudal vertebrae from Riodeva (Barrihonda-El Humero specimen) are referred to Dacentrurus armatus and assigned to a previously known caudal series from this site. The presence of abundant localities with stegosaurian remains reaffirms the important role of stegosaur dinosaurs in Late Jurassic coastal ecosystems. Full article
(This article belongs to the Special Issue Fossil Reptiles and Associated Faunal Record)
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