A new azhdarchoid pterosaur from the Cenomanian (Late Cretaceous) of Lebanon

Elgin, Ross A.; Frey, Eberhard

doi:10.1007/978-3-0348-0300-7_3

Cited by 2 publications

(4 citation statements)

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“… Abbreviations: Fe, femur; Fl, forelimb (humerus+ulna+wing metacarpal); Hl, hindlimb (femur+tiba+metatarsal III); Hu, humerus; Mt, metatarsal III; Ra, radius; Ti, tibia or tibiotarsus; Ul, ulna; Wmc, wing metacarpal; Wp1, first wing phalanx; Wp2, second wing phalanx; Wp3, third wing phalanx. Measurements from the literature (Cai & Wei [ 38 ]; Eck, Elgin & Frey [ 40 ]; Elgin & Frey [ 51 ]; Lü & Ji [ 11 ]; Lü& Yuan [ 46 ]; Lü & Zhang [ 10 ]; Lü et al [ 4 ]; Lü et al [ 41 ]; Lü et al [ 44 ]; Lü et al [ 52 ]; Lü et al [ 53 ]; Martill et al [ 54 ]; Unwin, Lü & Bakhurina [ 55 ]; Wang & Zhou [ 8 ]; Wang & Zhou [ 56 ]; Zhou [ 18 ]). …”

Section: Resultsmentioning

confidence: 99%

“…For example, the wing metacarpal in chaoyangopterids is elongate and about twice long as the humerus (1.85–2.12). This proportion is slightly higher in azhdarchids (2.45–2.48) [ 51 ] but lower in tapejarids and thalassodromines (1.39–1.67) (except for “ Huaxiapterus ” corollatus (2.15) and “ H .” benxiensis (1.91)). The ratio of wing metacarpal to ulna is 1.28–1.39 in chaoyangopterids, 1.44–1.75 in the azhdarchids, and 1.05–1.13 in tapejarids (except for “ H .” corollatus with 1.33).…”

Section: Discussionmentioning

confidence: 99%

“…The unreferred limb bones and the bones of individual B bear comparable proportions to other tapejarids ( Table 2 ), implying that they may belong to the same specimen. Moreover, these differences imply a possible affinity of the non-azhdarchid Microtuban with the chaoyangopterids or thalassodromines [ 51 ]. As shown in Table 2 , the limb proportions of Microtuban are more comparable to that of the chaoyangopterids than the thalassodromines.…”

Section: Discussionmentioning

confidence: 99%

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The toothless pterosaur Jidapterus edentus (Pterodactyloidea: Azhdarchoidea) from the Early Cretaceous Jehol Biota and its paleoecological implications

Zhou

Andres

2017

PLoS ONE

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BackgroundIn the Early Cretaceous Jehol Biota, the toothless pterosaurs flourished with the chaoyangopterids and tapejarids playing a key role in understanding the early diversity and evolution of the Azhdarchoidea. Unlike the more diverse tapejarids, the rarer chaoyangopterids are characterized by a long and low rostrum, supporting a close relationship with the huge azhdarchids. Unfortunately, our knowledge is still limited in the osteology, paleoecology, and taxonomy of the Chaoyangopteridae. As one of the best preserved skeletons, the type and only specimen of Jidapterus edentus provides an opportunity to understand the morphology and paleoecology of the chaoyangopterids.ResultsOur study of the osteology of Jidapterus edentus reveals valuable information about the morphology of the Chaoyangopteridae such as a rostrum with a curved dorsal profile, high Rostral Index (RI), larger angle between the dorsal and postorbital processes of the jugal, sequentially shorter fourth to seventh cervical vertebrae, sternum with a plate wider than long, contact of the metacarpal I with the distal syncarpal, pneumatic foramen on first wing phalanx, hatchet-like postacetabular process with unconstricted neck and small dorsal process, distinctly concave anterior margin of pubis, subrectangular pubic plate with nearly parallel anterior and posterior margins, longer proximal phalanges of pedal digits III and IV, as well as reduced and less curved pedal unguals. These features further support the validity of Jidapterus edentus as a distinct species and the close relationship of the chaoyangopterids with the azhdarchids. Paleoecologically, the chaoyangopterids are probably like the azhdarchids, more terrestrial than the contemporaneous and putatively arboreal tapejarids, which may have been limited to the forest-dominated ecosystem of the Jehol Biota.DiscussionThe osteology of Jidapterus edentus further supports the close relationship of the Chaoyangopteridae with the Azhdarchidae in sharing a high RI value and reduced and mildly-curved pedal unguals, and it also implies a possible paleoecological similarity in their terrestrial capability. Combined with the putatively arboreal and herbivorous tapejarids, this distinct lifestyle of the chaoyangopterids provides new insights into the diversity of pterosaurs in the ecosystem of the Jehol Biota.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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The toothless pterosaur Jidapterus edentus (Pterodactyloidea: Azhdarchoidea) from the Early Cretaceous Jehol Biota and its paleoecological implications

Zhou

Andres

2017

PLoS ONE

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“…Q. northropi possible coexisted with another pterosaur, known from the partial skeleton (TMM 42489), the skull of which was figured by Wellnhofer (1991 : 144). This specimen was attributed to Tapejaridae ( Kellner 2004 ), Tupuxuara ( Martill and Naish 2006 ), Thalassodromidae ( Elgin and Frey 2011 ), or Azhdarchidae ( Andres and Myers 2013 ). This short-faced pterosaur with shorter cervical vertebrae was found much lower in the Javelina Formation ( Kellner and Langston 1996 : 230).…”

Section: Review Of Localities Of Skeletal Fossils Of Azhdarmentioning

confidence: 99%

Review of taxonomy, geographic distribution, and paleoenvironments of Azhdarchidae (Pterosauria)

Averianov¹

2014

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The taxonomy, geographic distribution, and paleoenvironmental context of azhdarchid pterosaurs are reviewed. All purported pteranodontid, tapejarid, and azhdarchid specimens from the Cenomanian Kem Kem beds of Morocco are referred to a single azhdarchid taxon, Alanqa saharica. The four proposed autapomorphies of Eurazhdarcho langendorfensis from the lower Maastrichtian Sebeş Formation of Romania are based on misinterpretations of material and this taxon is likely a subjective junior synonym of Hatzegopteryx thambema. Among 54 currently reported azhdarchid occurrences (51 skeletal remains and 3 tracks) 13% are from lacustrine deposits, 17% from fluvial plain deposits, 17% from coastal plain deposits, 18% from estuarine and lagoonal deposits, and 35% from costal marine deposits. Azhdarchids likely inhabited a variety of environments, but were abundant near large lakes and rivers and most common in nearshore marine paleoenvironments.

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A new azhdarchoid pterosaur from the Cenomanian (Late Cretaceous) of Lebanon

Cited by 2 publications

References 35 publications

The toothless pterosaur Jidapterus edentus (Pterodactyloidea: Azhdarchoidea) from the Early Cretaceous Jehol Biota and its paleoecological implications

The toothless pterosaur Jidapterus edentus (Pterodactyloidea: Azhdarchoidea) from the Early Cretaceous Jehol Biota and its paleoecological implications

Review of taxonomy, geographic distribution, and paleoenvironments of Azhdarchidae (Pterosauria)

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