Preliminary Description and Phylogenetic Position of a New Plesiosaur (Reptilia: Sauropterygia) From the Toarcian of Holzmaden, Germany

O’Keefe, F. Robin

doi:10.1666/0022-3360(2004)078<0973:pdappo>2.0.co;2

Cited by 88 publications

(171 citation statements)

References 22 publications

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“…Por último, el clado Plesiosauria (incluyendo Pistosauridae) constituye el grupo más derivado dentro de los Sauropterygia (Rieppel, 2000;O'Keefe, 2001aO'Keefe, , 2002O'Keefe, , 2004a). …”

Section: Los Registros De Pachypleurosauria Corresponden a Sedimentosunclassified

“…El rango estratigráfico del grupo se extiende desde el Triásico Superior hasta el Cretácico Superior (Brown, 1981;Taylor y Cruickshank, 1993;O'Keefe, 2001aO'Keefe, , 2004aGasparini et al, 2003a). Su distribución es cosmopolita, habiéndoselos registrado en todos los continentes incluyendo la Antártida (Persson 1963;del Valle et al, 1977;Brown, 1981;O'Keefe, 2001aO'Keefe, , 2004a.…”

Section: Caracterización Del Clado Plesiosauriaunclassified

“…Su distribución es cosmopolita, habiéndoselos registrado en todos los continentes incluyendo la Antártida (Persson 1963;del Valle et al, 1977;Brown, 1981;O'Keefe, 2001aO'Keefe, , 2004a. Esta distribución comprende zonas de aguas cálido-templadas a relativamente frías (Kear, 2006), y de mares abiertos a posibles registros en ambientes de mezcla y dulceacuícolas (Kear, 2006;Sato et al, 2005;Carignano y Varela, 2010;O'Gorman et al, 2011).…”

Section: Caracterización Del Clado Plesiosauriaunclassified

“…1.2A) y 2) plesiosauromorfo, caracterizado por un cráneo relativamente pequeño y una región cervical relativamente larga (Welles, 1943;Brown, 1981;O'Keefe, 2001aO'Keefe, , 2002O'Keefe, , 2004a (Fig.1.2B). Estos morfotipos fueron durante mucho tiempo la base de la clasificación sistemática pero actualmente se considera que han evolucionado independientemente en varias oportunidades (Welles, 1943;O'Keefe, 2001aO'Keefe, , 2002.…”

Section: Caracterización Del Clado Plesiosauriaunclassified

See 3 more Smart Citations

New Insights on theAristonectes parvidens(Plesiosauria, Elasmosauridae) Holotype: News on an Old Specimen

O'gorman

2016

Ameghiniana

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“…Por último, el clado Plesiosauria (incluyendo Pistosauridae) constituye el grupo más derivado dentro de los Sauropterygia (Rieppel, 2000;O'Keefe, 2001aO'Keefe, , 2002O'Keefe, , 2004a). …”

Section: Los Registros De Pachypleurosauria Corresponden a Sedimentosunclassified

Section: Caracterización Del Clado Plesiosauriaunclassified

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New Insights on theAristonectes parvidens(Plesiosauria, Elasmosauridae) Holotype: News on an Old Specimen

O'gorman

2016

Ameghiniana

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“…Direct comparison between the taxa is limited because the cranium is unknown in Eurycleidus. Note that a specimen from the Sinemurian of Lyme Regis (OUM J.28585) referred to Eurycleidus by Cruickshank (1994c) differs from the type material of Eurycleidus and may represent a new taxon (O'Keefe, 2004), so OUM J.28585 is omitted from this discussion. Nevertheless, detailed reanalysis of BRSMG Cb 2335 has revealed several differences between it and the holotype of Eurycleidus.…”

Section: Systematic Positionmentioning

confidence: 99%

Reassessment of 'Plesiosaurus' megacephalus (Sauropterygia: Plesiosauria) from the Triassic-Jurassic boundary, UK

Smith

2015

Palaeontologia Electronica

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The holotype specimen of 'Plesiosaurus' megacephalus Stutchbury, 1846 (BRSMG Cb 2335) was destroyed in an air raid on Bristol during WWII. The specimen comprised a complete skeleton from the Triassic-Jurassic boundary of Street-on-theFosse, Somerset, UK. Plaster casts of the skull and right forelimb produced prior to its destruction, in conjunction with historical photographs and original descriptions, provide three-dimensional anatomical data for a modern systematic diagnosis of the taxon. A previously proposed neotype specimen (LEICS G221.1851) is therefore regarded as a referred specimen. Detailed comparison with other Lower Jurassic plesiosaurians demonstrates that 'Plesiosaurus' megacephalus is a distinct taxon, separate from Rhomaleosaurus sensu stricto and Eurycleidus arcuatus, and so a new genus is erected to accommodate it: Atychodracon gen. nov. The clarification and description of Atychodracon megacephalus is a vital step towards understanding the diversity and resolving the systematics of large-bodied plesiosaurians from the Triassic-Jurassic boundary.

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The Paleozoic and Mesozoic vertebrate record of Venezuela: An overview, summary of previous discoveries and report of a mosasaur from the La Luna Formation (Cretaceous)

Sánchez‐Villagra

Brinkmann

Lozsán³

2008

Paläontol. Z.

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Most reports of Paleozoic and Mesozoic vertebrates from Venezuela are anecdotical, with few detailed descriptions of mostly 'fish' groups. Synapsids (e.g., mammals) are totally unknown, and dinosaurs are only reported from the La Quinta Formation. At least 14 formally recognized geological formations contain fossil vertebrates, most from the Central and Western parts of the country. In the Devonian there is a significant contrast between the vertebrates of Venezuela and Colombia and those of more southern parts of South America. Marine reptiles are present in a few localities in western Venezuela, and are very fragmentary, with one exception. A mosasaur from the Cretaceous La Luna Formation, reported here for the first time, is the most complete vertebrate (tetrapod) from the Cretaceous of Venezuela, and includes a partial skull and a few postcranial remains.

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Preliminary Description and Phylogenetic Position of a New Plesiosaur (Reptilia: Sauropterygia) From the Toarcian of Holzmaden, Germany

Cited by 88 publications

References 22 publications

New Insights on theAristonectes parvidens(Plesiosauria, Elasmosauridae) Holotype: News on an Old Specimen

New Insights on theAristonectes parvidens(Plesiosauria, Elasmosauridae) Holotype: News on an Old Specimen

Reassessment of 'Plesiosaurus' megacephalus (Sauropterygia: Plesiosauria) from the Triassic-Jurassic boundary, UK

The Paleozoic and Mesozoic vertebrate record of Venezuela: An overview, summary of previous discoveries and report of a mosasaur from the La Luna Formation (Cretaceous)

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