Revision of Amygdalodon patagonicus Cabrera, 1947 (Dinosauria, Sauropoda)

Rauhut, Oliver W. M.

doi:10.1002/mmng.20030060110

Cited by 7 publications

(11 citation statements)

References 12 publications

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“…It was found in the Cerro Carnerero Formation at Pampa Agnia, Patagonia, Argentina, which was thought to be Bajocian, but may be as old as Pliensbachian-Toarcian (see Rauhut, 2003a;Cúneo et al, 2013). It was first described in 1947 (Cabrera, 1947), redescribed in three subsequent papers (Casamiquela, 1963;Rauhut, 2003b;Carballido & Pol, 2010). The material consists of isolated teeth, several appendicular elements and some fragmentary axial elements.…”

Section: Systematic Revision Of Middle Jurassic Gondwanan Sauropodsmentioning

confidence: 99%

Phylogenetic analysis of Gondwanan basal eusauropods from the Early-Middle Jurassic of Patagonia, Argentina

Holwerda

Pol

2018

Spanish J. Palaeontol.

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Gondwanan Jurassic non-neosauropod eusauropods are key for the understanding of sauropod evolution, although their phylogenetic interrelationships remain poorly understood. However, following the revision of the holotype of a key taxon from the early Middle Jurassic Cañadón Asfalto Formation Patagonia, Argentina, Patagosaurus fariasi, the phylogenetic affi nities need to be tested with new osteological information gathered during the redescription of the holotype of Patagosaurus. A new phylogeny presented here shows a close affi liation of Patagosaurus with Cetiosaurus from the Middle Jurassic of the UK. The close relationship of Patagosaurus with Barapasaurus, often found in previous phylogenies, was not recovered here. Instead, Patagosaurus is retrieved as more derived than most Early and Middle Jurassic sauropods, although more basal to Mamenchisaurus, Omeisaurus, turiasaurians, and neosauropods. Another sauropod taxon found together with Patagosaurus, Volkheimeria, is retrieved several nodes more basal than the former, which shows, together with evidence of several other sauropod taxa in RESUMEN Los eusaurópodos no neosaurópodos del Jurásico de Gondwana son especies clave para la comprensión de la evolución del clado Sauropoda, aunque sus relaciones fi logenéticas siguen sin estar bien resueltas. Sin embargo, gracias a la revisión del holotipo de uno de los taxones más importantes del Jurásico Medio temprano de la Formación Cañadón Asfalto, Patagosaurus fariasi, bastantes de sus hipótesis fi logenéticas han de ser puestas en duda, basadas en la nueva información osteológica recogida durante la redescripción del holotipo de Patagosaurus. La nueva hipótesis filogenética aquí presentada muestra una relación cercana entre Patagosaurus y Cetiosaurus, del Jurásico Medio del Reino Unido. La cercanía fi logenética de Patagosaurus con Barapasaurus, publicada en numerosos análisis fi logenéticos, no se obtuvo en este nuevo análisis. En este caso, Patagosaurus aparece como un taxón más derivado que la mayoría de saurópodos del Jurásico Medio y Superior, aunque más basal que Mamenchisaurus, Omeisaurus, Turiasauria y Neosauropoda. Otro taxón que se encuentra normalmente emparentado con Patagosaurus, https://doi.org/10.7203/sjp.33.2.13604 HOLWERDA & POLthe Cañadón Asfalto Formation, that a high evolutionary diversity existed in Southwest Gondwana in the early Middle Jurassic, a pattern which is also seen in fossil groups other than sauropods (e.g., theropods).

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Section: Systematic Revision Of Middle Jurassic Gondwanan Sauropodsmentioning

confidence: 99%

Phylogenetic analysis of Gondwanan basal eusauropods from the Early-Middle Jurassic of Patagonia, Argentina

Holwerda

Pol

2018

Spanish J. Palaeontol.

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“…Nuevas descripciones de Coloradisaurus muestran a este taxón como un miembro de Massospondylidae (Apaldetti et al, , 2014 (Casamiquela, 1964 (Wilson, 2002;Rauhut, 2003;Upchurch et al, 2004) sobre la base de estados de caracteres derivados en las vértebras. Sin embargo, nueva información proveniente de la anatomía dentaria ubica a Amygdalodon por fuera de Eusauropoda (Carballido y Pol, 2010;Carballido y Sander, 2013).…”

Section: Reseña De Los Principales Grupos De Sauropodomorpha Sauropodunclassified

El Registro De Sauropodomorpha (Dinosauria) De La Argentina

Otero¹,

Salgado²

2015

PEAPA

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“…Amygdalodon patagonicus Cabrera, 1947 Lectotype. MLP 46-VIII-21-1/2, posterior dorsal vertebra (Rauhut, 2003) (Figure 3). (Carballido and Pol, 2010).…”

unclassified

“…Wilson (2002) regarded A. patagonicus as a member of Eusauropoda together with Patagosaurus and more derived sauropods upon the basis of the 'cervical rib positioned ventrolateral to centrum' (Wilson, 2002, p.267). Rauhut (2003) also placed this species within Eusauropoda based on several features present in the lectotype as well as in the referred specimens of A. patagonicus, although lacking synapomorphic traits that define higher eusauropod clades. The features listed by Rauhut (2003) as synapomorphic of Eusauropoda and present in A. patagonicus include, among others, the height of the dorsal neural arches being equal to or exceeding the height of the centrum and teeth with spatulate crown, wrinkled enamel, presence of Vshaped wear-facets and well-developed grooves on the labial surfaces of the crown paralleling the crown margins (Rauhut, 2003, p. 180).…”

mentioning

confidence: 99%

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Dinosaurs (Reptilia, Archosauria) at Museo de La Plata, Argentina: annotated catalogue of the type material and Antarctic specimens

Otero¹,

Reguero²

2013

Palaeontol electronic

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A commented-illustrated catalogue of non-avian dinosaurs housed at Museo de La Plata, Argentina is presented. This represents the first commented catalogue of the La Plata Museum dinosaurs to be published. This includes the type material as well as Antarctic specimens. The arrangement of the material was made in a phylogenetic fashion, including systematic rank, type material, referred specimens, geographic and stratigraphic location, and comments/remarks, when necessary. A total of 13 type specimens of non-avian dinosaurs are housed at the collection of Museo de La Plata, including eight sauropods, one theropod, one ornithischian, and three ichnotaxa. There are four Antarctic specimens, one of which is a holotype, whereas other corresponds to the first sauropod dinosaur registered for that continent.

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Revision of Amygdalodon patagonicus Cabrera, 1947 (Dinosauria, Sauropoda)

Cited by 7 publications

References 12 publications

Phylogenetic analysis of Gondwanan basal eusauropods from the Early-Middle Jurassic of Patagonia, Argentina

Phylogenetic analysis of Gondwanan basal eusauropods from the Early-Middle Jurassic of Patagonia, Argentina

El Registro De Sauropodomorpha (Dinosauria) De La Argentina

Dinosaurs (Reptilia, Archosauria) at Museo de La Plata, Argentina: annotated catalogue of the type material and Antarctic specimens

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