Phylogeny of Drepanosauridae (Reptilia: Diapsida)

Senter, Phil

doi:10.1017/s1477201904001427

Cited by 31 publications

(68 citation statements)

References 28 publications

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“…The name Eosuchia, originally erected by Broom [12] as a suborder for the family Younginidae, was attached to the araeoscelidian sister group by Laurin [4]. This reconception of Eosuchia was adopted by a few studies [3,13,14]. However, considering that Eosuchia was long classified as an order of 'primitive lepidosaurians' in pre-cladistic classifications [15], other studies eschewed Eosuchia as a converted clade name [5,6,16].…”

Section: Methodsmentioning

confidence: 99%

A new Early Permian reptile and its significance in early diapsid evolution

2011

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The initial stages of evolution of Diapsida (the large clade that includes not only snakes, lizards, crocodiles and birds, but also dinosaurs and numerous other extinct taxa) is clouded by an exceedingly poor Palaeozoic fossil record. Previous studies had indicated a 38 Myr gap between the first appearance of the oldest diapsid clade (Araeoscelidia), ca 304 million years ago (Ma), and that of its sister group in the Middle Permian (ca 266 Ma). Two new reptile skulls from the Richards Spur locality, Lower Permian of Oklahoma, represent a new diapsid reptile: Orovenator mayorum n. gen. et sp. A phylogenetic analysis identifies O. mayorum as the oldest and most basal member of the araeoscelidian sister group. As Richards Spur has recently been dated to 289 Ma, the new diapsid neatly spans the above gap by appearing 15 Myr after the origin of Diapsida. The presence of O. mayorum at Richards Spur, which records a diverse upland fauna, suggests that initial stages in the evolution of non-araeoscelidian diapsids may have been tied to upland environments. This hypothesis is consonant with the overall scant record for nonaraeoscelidian diapsids during the Permian Period, when the well-known terrestrial vertebrate communities are preserved almost exclusively in lowland deltaic, flood plain and lacustrine sedimentary rocks.

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Section: Methodsmentioning

confidence: 99%

A new Early Permian reptile and its significance in early diapsid evolution

2011

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“…Subsequent workers have ignored this character since its formulation. Juul (1994) (Benton, 1985(Benton, , 2004Gauthier, 1986;Parrish, 1992;Juul, 1994;Senter, 2004), without testing the homology of the two structures. Parrish (1992) suggested that Erythrosuchus had both an internal trochanter and a fourth trochanter, but as pointed out by Gower (2003), the area Parrish suggested to be the fourth trochanter was not for the attachment of M. caudifemoralis but rather for M. iliofemoralis.…”

Section: Femoral Condyles: (0) -Prominent;mentioning

confidence: 99%

The osteology and relationships ofVancleavea campi(Reptilia: Archosauriformes)

Nesbitt

Stocker

Small

et al. 2009

Zoological Journal of the Linnean Society

219

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Vancleavea campi Long & Murry, 1995, from the Late Triassic of western North America, represents the latest surviving non-archosaurian archosauriform known to date. We present here a detailed comparative description based on a nearly complete, articulated skeleton from the Coelophysis Quarry in north-central New Mexico and other fragmentary specimens. The unique combination of morphological features of Vancleavea is unparalleled within Reptilia; it has four unique morphologies of imbricated osteoderms covering the entire body, a short, highly ossified skull, relatively small limbs and morphological features consistent with a semi-aquatic lifestyle. Vancleavea is placed in a rigorous phylogenetic analysis examining the relationships of non-archosaurian archosauriforms, and is found to be more closely related to Archosauria than both Erythrosuchus and Proterosuchus, but outside of the crown group. The analysis confirms previously hypothesized relationships, which found Euparkeria to be the closest sister taxon of Archosauria. It is not clear whether specimens referred to Vancleavea campi represent a single species-level taxon or a clade of closely related taxa that lived through much of the Late Triassic of North America, given the poor fossil record of the taxon.

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“…A recently published inference that the two lineages acquired tympanic ears separately is based on the assumption that the basal diapsid Youngina -which lacks evidence for tympanic ears -is a basal lepidosauromorph (Clack and Allin 2004). However, recent phylogenetic analyses place Youngina outside the lepidosauromorph-archosauromorph clade (Laurin 1991;Rieppel and deBraga 1996;Lee 1997a,b;Modesto and Reisz 2002;Senter 2004). Enlarged orbits in basal lepidosauromorphs and archosauromorphs (Robinson 1962;Kuhn-Schnyder and Peyer 1973;Carroll 1975;Gow 1975;Evans 1980, Evans 1991Modesto and Reisz 2002) suggest crepuscular or nocturnal habits, an interpretation supported by the fact that a reconstructed ancestral archosaur visual pigment seems made for low light levels (Chang et al 2002).…”

Section: Lizards and Kin (Diapsida: Lepidosauromorpha)mentioning

confidence: 99%

Voices of the past: a review of Paleozoic and Mesozoic animal sounds

Senter

2008

Historical Biology

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Here, I present a review and synthesis of fossil and neontological evidence to find major trends in the pre-Cenozoic evolution of animal acoustic behaviour. Anatomical, ecological and phylogenetic data support the following scenario. Stridulating insects, including crickets, performed the first terrestrial twilight choruses during the Triassic. The twilight chorus was joined by water boatmen in the Lower Jurassic, anurans in the Upper Jurassic, geckoes and birds in the Lower Cretaceous, and cicadas and crocodilians in the Upper Cretaceous. Parallel evolution of defensive stridulation took place multiple times within Malacostraca, Arachnida and Coleoptera. Parallel evolution of defensive and courtship-related sound production took place in Actinopterygii, possibly as early as the Devonian. Defensive vocalisations by tetrapods probably did not appear until their predators acquired tympanic ears in the Permian. Tympanic ears appeared independently in Diadectomorpha, Seymouriamorpha, Parareptilia, Diapsida and derived Synapsida. Crocodilians and birds acquired vocal organs independently, and there is no anatomical evidence for vocal ability in bird-line archosaurs basal to the avian clade Ornithothoraces. Acoustic displays by non-avian dinosaurs were therefore probably non-vocal. Other aspects of the evolution of acoustic behaviour in these and other lineages are also discussed.

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Phylogeny of Drepanosauridae (Reptilia: Diapsida)

Cited by 31 publications

References 28 publications

A new Early Permian reptile and its significance in early diapsid evolution

A new Early Permian reptile and its significance in early diapsid evolution

The osteology and relationships ofVancleavea campi(Reptilia: Archosauriformes)

Voices of the past: a review of Paleozoic and Mesozoic animal sounds

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