The phylogenetic position of Isalorhynchus genovefae, a Late Triassic rhynchosaur from Madagascar

Langer, Max C.; Boniface, Michael; Cuny, Gilles; Barbieri, Laurent

doi:10.1016/s0753-3969(00)80002-6

Cited by 33 publications

(42 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…We also expanded the taxonomic sampling of the analysis by adding the oldest known rhynchosaur, Noteosuchus colletti (Watson, 1912;Carroll, 1976;Dilkes, 1998;Ezcurra et al, 2014). Scoring of taxa was based primarily on first-hand examination of specimens, with the exception of Isalorhynchus genovefae, which was scored using Langer et al (2000a) and Whatley (2005).…”

Section: Phylogenetic Analysismentioning

confidence: 99%

The Early Evolution of Rhynchosaurs

2016

View full text Add to dashboard Cite

The rhynchosaurian archosauromorphs are an important and diverse group of fossil tetrapods that first appeared during the Early Triassic and probably became extinct during the early Late Triassic (early Norian). Here, the early evolution of rhynchosaurs during the Early and early Middle Triassic (Induan-Anisian: 252.2-242 Mya) is reviewed based on new anatomical observations and their implications for the taxonomy, phylogenetic relationships and macroevolutionary history of the group. A quantitative phylogenetic analysis recovered a paraphyletic genus Rhynchosaurus, with "Rhynchosaurus" brodiei more closely related to hyperodapedontines than to Rhynchosaurus articeps. Therefore, a new genus is erected, resulting in the new combination Langeronyx brodiei. A body size analysis found two independent increases in size in the evolutionary history of rhynchosaurs, one among stenaulorhynchines and the other in the hyperodapedontine lineage. Maximum likelihood fitting of phenotypic evolution models to body size data found ambiguous results, with body size evolution potentially interpreted as fitting either a non-directional Brownian motion model or a stasis model. A Dispersal-ExtinctionCladogenesis analysis reconstructed the areas that are now South Africa and Europe as the ancestral areas of Rhynchosauria and Rhynchosauridae, respectively. The reconstruction of dispersal events between geographic areas that are broadly separated paleolatitudinally implies that barriers to the dispersal of rhynchosaurs from either side of the paleo-Equator during the Middle Triassic were either absent or permeable.

show abstract

Section: Phylogenetic Analysismentioning

confidence: 99%

The Early Evolution of Rhynchosaurs

2016

View full text Add to dashboard Cite

show abstract

“…4). Among the fossils described by Huene (1926Huene ( , 1928Huene ( , 1935Huene ( -1942, those with current taxonomic/stratigraphic meaning are the type of Gomphodontosuchus brasiliensis and some materials assigned to Scaphonyx fischeri and/or Cephalonia lotziana that can be referred to Hyperodapedon (Langer et al, 2000).…”

Section: The Waldsangamentioning

confidence: 99%

“…The fossil remains of Alemoa almost certainly were noticed by local inhabitants of Santa Maria, as well as by the first European scientific expeditions to explore the Rio Grande province during the 19th century. However, fossils collected from the area have been studied scientifically only since the beginning of the last century (Woodward, 1903;Langer et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Studies on continental Late Triassic tetrapod biochronology. I. The type locality of Saturnalia tupiniquim and the faunal succession in south Brazil

Langer

2005

Journal of South American Earth Sciences

View full text Add to dashboard Cite

“…Tooth shape and distribution are taxonomically informative for rhynchosaurs (Chatterjee, 1980; Langer et al, 2000). The occlusal surface of the maxilla in SAM-PK-11704 bears a well-developed, single groove that sets the medial and lateral cushion-shaped tooth bearing areas (TBAs) apart.…”

Section: Resultsmentioning

confidence: 99%

“…stockleyi to the Hyperodapedontinae (see also Benton, 1983). More recently, Langer et al (2000) revised the inclusivity of the genus Hyperodapedon , proposing that it encompassed most Late Triassic rhynchosaurs, including Su. stockleyi (see also Mukherjee & Ray, 2014), but did not address the validity of that species.…”

Section: Introductionmentioning

confidence: 99%

Supradapedon revisited: geological explorations in the Triassic of southern Tanzania

Langer

Rosa

Montefeltro

2017

PeerJ

View full text Add to dashboard Cite

The upper Triassic deposits of the Selous Basin in south Tanzania have not been prospected for fossil tetrapods since the middle of last century, when Gordon M. Stockley collected two rhynchosaur bone fragments from the so called “Tunduru beds”. Here we present the results of a field trip conducted in July 2015 to the vicinities of Tunduru and Msamara, Ruvuma Region, Tanzania, in search for similar remains. Even if unsuccessful in terms of fossil discoveries, the geological mapping conducted during the trip improved our knowledge of the deposition systems of the southern margin of the Selous Basin during the Triassic, allowing tentative correlations to its central part and to neighbouring basins. Moreover, we reviewed the fossil material previously collected by Gordon M. Stockley, confirming that the remains correspond to a valid species, Supradapedon stockleyi, which was incorporated into a comprehensive phylogeny of rhynchosaurs and found to represent an Hyperodapedontinae with a set of mostly plesiomorphic traits for the group. Data gathered form the revision and phylogenetic placement of Su. stockleyi helps understanding the acquisition of the typical dental traits of Late Triassic rhynchosaurs, corroborating the potential of hyperodapedontines as index fossils of the Carnian-earliest Norian.

show abstract

The phylogenetic position of Isalorhynchus genovefae, a Late Triassic rhynchosaur from Madagascar

Cited by 33 publications

References 19 publications

The Early Evolution of Rhynchosaurs

The Early Evolution of Rhynchosaurs

Studies on continental Late Triassic tetrapod biochronology. I. The type locality of Saturnalia tupiniquim and the faunal succession in south Brazil

Supradapedon revisited: geological explorations in the Triassic of southern Tanzania

Contact Info

Product

Resources

About