Bemerkungen zu einem Neufund vonWeigeltisaurus jaekeli (Weigelt) im nordhessischen Kupferschiefer

Schaumberg, Günther

doi:10.1007/bf02985676

Cited by 11 publications

(15 citation statements)

References 4 publications

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“…This character was used to describe the patagial ossifications of weigeltisaurids following the hypothesis by Evans (1982) . However, in light of the work of Schaumberg (1986) , Frey, Sues & Munk (1997) , and the anatomical observations described below, we consider these structures to be dermal ossifications rather than part of the axial skeleton. The codings have not changed from prior iterations of this analysis.…”

Section: Methodsmentioning

confidence: 99%

“…After several decades, interest in Weigeltisaurus and Coelurosauravus was reawakened by the discovery of additional specimens of the former in Germany (Schaumberg, 1976(Schaumberg, , 1986 and England (Pettigrew, 1979). Schaumberg noted the presence of numerous bony rods in the new skeletons reported by him and argued that they were parts of the reptile's skeleton rather than of overlying coelacanth fins.…”

Section: History Of Researchmentioning

confidence: 99%

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Osteology, relationships and functional morphology ofWeigeltisaurus jaekeli(Diapsida, Weigeltisauridae) based on a complete skeleton from the Upper Permian Kupferschiefer of Germany

Pritchard

Sues

Scott

et al. 2021

PeerJ

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Background Weigeltisauridae is a clade of small-bodied diapsids characterized by a horned cranial frill, slender trunk and limbs, and a patagium supported by elongated bony rods. Partial skeletons and fragments are definitively known only from upper Permian (Lopingian) rocks in England, Germany, Madagascar and Russia. Despite these discoveries, there have been few detailed descriptions of weigeltisaurid skeletons, and the homologies of many skeletal elements—especially the rods supporting the patagium—remain the subject of controversy. Materials & Methods Here, we provide a detailed description of a nearly complete skeleton of Weigeltisaurus jaekeli from the upper Permian (Lopingian: Wuchiapingian) Kupferschiefer of Lower Saxony, Germany. Briefly addressed by past authors, the skeleton preserves a nearly complete skull, postcranial axial skeleton, appendicular skeleton, and patagial supports. Through comparisons with extant and fossil diapsids, we examine the hypotheses for the homologies of the patagial rods. To examine the phylogenetic position of Weigeltisauridae and characterize the morphology of the clade, we integrate the material and other weigeltisaurids into a parsimony-based phylogenetic analysis focused on Permo-Triassic non-saurian Diapsida and early Sauria (61 taxa, 339 characters). Results We recognize a number of intriguing anatomical features in the weigeltisaurid skeleton described here, including hollow horns on the post-temporal arch, lanceolate teeth in the posterior portion of the maxilla, the absence of a bony arch connecting the postorbital and squamosal bones, elongate and slender phalanges that resemble those of extant arboreal squamates, and patagial rods that are positioned superficial to the lateral one third of the gastral basket. Our phylogenetic study recovers a monophyletic Weigeltisauridae including Coelurosauravus elivensis, Weigeltisaurus jaekeli, and Rautiania spp. The clade is recovered as the sister taxon to Drepanosauromorpha outside of Sauria (=Lepidosauria + Archosauria). Conclusions Our anatomical observations and phylogenetic analysis show variety of plesiomorphic diapsid characters and apomorphies of Weigeltisauridae in the specimen described here. We corroborate the hypothesis that the patagial ossifications are dermal bones unrelated to the axial skeleton. The gliding apparatus of weigeltisaurids was constructed from dermal elements unknown in other known gliding diapsids. SMNK-PAL 2882 and other weigeltisaurid specimens highlight the high morphological disparity of Paleozoic diapsids already prior to their radiation in the early Mesozoic.

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Section: Methodsmentioning

confidence: 99%

Section: History Of Researchmentioning

confidence: 99%

Osteology, relationships and functional morphology ofWeigeltisaurus jaekeli(Diapsida, Weigeltisauridae) based on a complete skeleton from the Upper Permian Kupferschiefer of Germany

Pritchard

Sues

Scott

et al. 2021

PeerJ

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“…Very recently, a third specimen (Bodental) has been recovered from the same deposits. This material was described by Schaumberg ( 1986).…”

Section: Wolfberg and Cornbergmentioning

confidence: 99%

A review of the Upper Permian genera Coelurosauravus, Weigeltisaurus and Gracilisaurus (Reptilia: Diapsida)

Evans

Haubold

1987

Zoological Journal of the Linnean Society

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“…Evans (1982) re-studied the Eppleton skeleton and agreed with Pettigrew's assessment of bipartite ribs. Schaumberg (1986) returned to the anatomy of Weigeltisaurus jaekeli with studies of additional new specimens from the Kupferschiefer of Germany. He questioned the interpretations of Pettigrew (1979) and Evans (1982) regarding the homology of the patagials, noting that a one-to-one correspondence of patagial ossifications and dorsal ribs would require over 30 dorsal vertebrae in the Eppleton skeleton.…”

Section: Discussion Homology and Function Of The Patagial Ossificationsmentioning

confidence: 99%

“…Upper Permian Schaumberg (1976Schaumberg ( , 1986Schaumberg ( , 2007, Evans (1982), Frey et al (1997), Bulanov and Sennikov (2006, 2015a.. Robinson (1962Robinson ( , 1967, Colbert (1966Colbert ( , 1970…”

Section: Competing Interestsmentioning

confidence: 99%

Peer Review #3 of "Osteology, relationships and functional morphology of Weigeltisaurus jaekeli (Diapsida, Weigeltisauridae) based on a complete skeleton from the Upper Permian Kupferschiefer of Germany (v0.2)"

Buffa¹

2021

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Background.Weigeltisauridae is a clade of small-bodied diapsids characterized by a horned cranial frill, slender trunk and limbs, and a patagium supported by elongated bony rods. Partial skeletons and fragments are definitively known only from upper Permian (Lopingian) rocks in England, Germany, Madagascar, and Russia. Despite these discoveries, there have been few detailed descriptions of weigeltisaurid skeletons, and the homologies of many skeletal elements-especially the rods supporting the patagium-remain the subject of controversy. Materials & Methods. Here, we provide a detailed description of a nearly complete skeleton of Weigeltisaurus jaekeli from the upper Permian (Lopingian: ?Wuchiapingian) Kupferschiefer of Lower Saxony, Germany. Briefly addressed by past authors, the skeleton preserves a nearly complete skull, postcranial axial skeleton, appendicular skeleton, and patagial supports. Through comparisons with extant and fossil diapsids, we examine the hypotheses for the homologies of the patagial rods. To examine the phylogenetic position of Weigeltisauridae and characterize the morphology of the clade, we integrate the material and other weigeltisaurids into a parsimony-based phylogenetic analysis focused on Permo-Triassic non-saurian Diapsida and early Sauria (61 taxa, 339 characters). Results. We recognize a number of intriguing anatomical features in the weigeltisaurid skeleton described here, including hollow horns on the post-temporal arch, lanceolate teeth in the posterior portion of the maxilla, the absence of a bony arch connecting the postorbital and squamosal bones, elongate and slender phalanges that resemble those of extant arboreal squamates, and patagial rods that are positioned superficial to the lateral one third of the gastral basket. Our phylogenetic study recovers a monophyletic Weigeltisauridae including Coelurosauravus

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Bemerkungen zu einem Neufund vonWeigeltisaurus jaekeli (Weigelt) im nordhessischen Kupferschiefer

Cited by 11 publications

References 4 publications

Osteology, relationships and functional morphology ofWeigeltisaurus jaekeli(Diapsida, Weigeltisauridae) based on a complete skeleton from the Upper Permian Kupferschiefer of Germany

Osteology, relationships and functional morphology ofWeigeltisaurus jaekeli(Diapsida, Weigeltisauridae) based on a complete skeleton from the Upper Permian Kupferschiefer of Germany

A review of the Upper Permian genera Coelurosauravus, Weigeltisaurus and Gracilisaurus (Reptilia: Diapsida)

Peer Review #3 of "Osteology, relationships and functional morphology of Weigeltisaurus jaekeli (Diapsida, Weigeltisauridae) based on a complete skeleton from the Upper Permian Kupferschiefer of Germany (v0.2)"

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