Banguela

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Banguela
Temporal range: Albian
Banguela oberlii.png
Illustration of the holotype jaw fragment, with cross-section
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Order: Pterosauria
Suborder: Pterodactyloidea
Clade: Azhdarchoidea
Genus: Banguela
Headden & Campos, 2015
Species:
B. oberlii
Binomial name
Banguela oberlii
Headden & Campos, 2015
Synonyms

Banguela is a genus of azhdarchoid pterosaur from the Early Cretaceous period (Albian stage) of what is now Brazil. Only one species is known, Banguela oberlii. [1]

Contents

Discovery and naming

The Swiss collector Urs Oberli acquired a pterosaur jaw fragment from the Chapada do Araripe. In 2005, this was described by André Jacques Veldmeijer and colleagues, and referred to Thalassodromeus sethi. [2]

In 2015, it was named and described by Jaime Headden and Hebert Bruno Nascimento Campos as a separate genus Banguela, with the type species Banguela oberlii. The generic name is a Brazilian Portuguese word for "toothless one", especially used as an affectionate term for elderly women. The specific name honors Oberli. [1]

The holotype, NMSG SAO 251093, was probably found in the Romualdo Formation, also known as the Romualdo Member of the Santana Formation, dating from the Albian. It consists of the symphysis, fused front end, of the lower jaws. [1]

Description

The specimen reconstructed as a dsungaripterid by Jaime Headden Banguela skull.png
The specimen reconstructed as a dsungaripterid by Jaime Headden

Banguela has an estimated skull length of about 61 centimeters (2 ft) and wingspan of over 3.7 meters (12 ft). The symphysis, with a preserved length of 273 millimeters (10.7 in), curves upwards and has a relatively short depression at its upper rear end. The front upper edge of the symphysis is sharp. The front bottom edge is sharp too but lacks a true crest. There are no teeth or tooth sockets present in the fragment. [1]

Phylogeny

In 2005, Veldmeijer had already noted similarities to Dsungaripterus , but considered the available data to be insufficient to draw any conclusions from this. [2] In 2015, Headden & Campos placed Banguela in the family Dsungaripteridae, in a basal position. The cladogram of their analysis is shown below: [1]

Azhdarchoidea

If Banguela were a dsungaripterid pterosaur, it would have been unique among the group due to the presumed total absence of teeth. Other pterosaur groups, such as pteranodontids, nyctosaurids and azhdarchoids, have also lost their teeth, indicating that toothloss might have independently occurred at least four times among pterosaurs. However, because dsungaripterids are occasionally recovered as derived azhdarchoids, it is possible that toothloss has occurred more often, if as an instance of Dollo's Law azhdarchoids should be originally toothless. [1] [3] If there was a large number of cases, Banguela suggests how it developed in most of these: the development of horned rhamphothecae in the jawtips, with progressive tooth rarification until they cease to be useful. [1] Since dsungaripteroids have some of the most specialized teeth of all sauropsids, [4] the toothlessness of Banguela could indicate some degree of divergent specialization.

However, its identity as a dsungaripterid was disputed by other researchers, since no unambiguous traits of dsungaripterids were found in the type specimen. [5] [6] [7] In 2018, a study suggested that Banguela was a species of Thalassodromeus (T. oberlii), and thus it is assigned to the Thalassodrominae, a subfamily within the clade Tapejaridae. [6] In 2020, McPhee and colleagues considered Banguela as a valid genus, and claimed that it belongs to the Chaoyangopteridae. [7]

See also

Related Research Articles

<i>Tupuxuara</i> Genus of thalassodromid pterosaur from the Early Cretaceous

Tupuxuara is a genus of thalassodromid pterosaur that lived during the Albian age of the Early Cretaceous, about 112 million years ago. Its remains were found in what is now the Romualdo Formation of the Santana Group in Brazil. Tupuxuara was named in 1988 by paleontologists Alexander Kellner and Diógenes de Almeida Campos. The name Tupuxuara means "familiar spirit" referring to a familiar spirit in the mythology of the Tupi people in Brazil. Two species have been named, T. longicristatus, the type species, and T. leonardii. An additional species has been named in 2013, T. deliradamus. However, the validity of this species has been put into question and it may not even belong to Tupuxuara.

<i>Thalassodromeus</i> Genus of thalassodromid pterosaur from the Early Cretaceous

Thalassodromeus is a genus of pterosaur that lived in what is now Brazil during the Early Cretaceous period, about a hundred million years ago. The original skull, discovered in 1983 in the Araripe Basin of northeastern Brazil, was collected in several pieces. In 2002, the skull was made the holotype specimen of Thalassodromeus sethi by palaeontologists Alexander Kellner and Diogenes de Almeida Campos. The generic name means "sea runner", and the specific name refers to the Egyptian god Seth due to its crest being supposedly reminiscent of Seth's crown. Other scholars have pointed out that the crest was instead similar to the crown of Amon. A jaw tip was assigned to T. sethi in 2005, became the basis of the new genus Banguela in 2015, and assigned back to Thalassodromeus as the species T. oberlii in 2018, though other researchers consider it a valid genus. Another species was described in 2015 based on a supposed crest fragment, but this was later shown to be part of a turtle shell.

Anhanguera is a genus of pterodactyloid pterosaur known from the Early Cretaceous Romualdo Formation of Brazil and the Late Cretaceous Kem Kem Group of Morocco. This pterosaur is closely related to Ornithocheirus, but belongs in the family Anhangueridae. The generic name comes from the Tupi words añanga, meaning "spirit protector of the animals" + wera "bygone".

<span class="mw-page-title-main">Tapejaridae</span> Family of azhdarchoid pterosaurs from the Cretaceous period

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<i>Eopteranodon</i> Genus of tapejarid pterosaur

Eopteranodon is a genus of tapejarid pterosaur from the Aptian-age Lower Cretaceous Yixian Formation of Beipiao City, Liaoning, China. The genus was named in 2005 by paleontologists Lü Junchang and Zhang Xingliao. The type species is Eopteranodon lii. A second species, E. yixianensis, was named in 2023, but its validity has been questioned.

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<span class="mw-page-title-main">Azhdarchoidea</span> Superfamily of pterodactyloid pterosaurs

Azhdarchoidea is a group of pterosaurs within the suborder Pterodactyloidea, more specifically within the group Ornithocheiroidea. Pterosaurs belonging to this group lived throughout the Early and Late Cretaceous periods, with one tentative member, Tendaguripterus, that lived in the Late Jurassic period. The largest azhdarchoids include members of the family Azhdarchidae, examples of these are Quetzalcoatlus, Hatzegopteryx, and Arambourgiania. Other notable pterosaur families belonging to the Azhdarchoidea are the Tapejaridae, the Thalassodromidae, and the Chaoyangopteridae. This group contains some of the most advanced members of the pterosaur order.

<span class="mw-page-title-main">Ornithocheiridae</span> Family of ornithocheiran pterosaurs

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<span class="mw-page-title-main">Thalassodromidae</span> Family of azhdarchoid pterosaurs from the Cretaceous period

Thalassodromidae is a group of azhdarchoid pterosaurs from the Cretaceous period. Its traditional members come from Brazil, which include the type genus Thalassodromeus, as well as Tupuxuara. Additionally, the recently named genus Kariridraco, also from Brazil, is another undisputed thalassodromid. However, other possible members also come from other places, including Morocco and Argentina.

<i>Caupedactylus</i> Genus of tapejarid pterosaur form the Early Cretaceous

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References

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  2. 1 2 Veldmeijer, A.J.; Signore, M.; Meijer, H.J.M. (2005). "Description of two pterosaur (Pterodactyloidea) mandibles from the upper Cretaceous Santana Formation, Brazil". Deinsea. 11: 67–86.
  3. Andres, B.; Myers, T. S. (2013). "Lone Star Pterosaurs". Earth and Environmental Science Transactions of the Royal Society of Edinburgh. 103 (3–4): 383–398. doi:10.1017/S1755691013000303. S2CID   84617119.
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  6. 1 2 Pêgas, R. V.; Costa, F. R.; Kellner, A. W. A. (2018). "New Information on the osteology and a taxonomic revision of The genus Thalassodromeus (Pterodactyloidea, Tapejaridae, Thalassodrominae)". Journal of Vertebrate Paleontology. 38 (2): e1443273. Bibcode:2018JVPal..38E3273P. doi:10.1080/02724634.2018.1443273. S2CID   90477315.
  7. 1 2 McPhee, James; Ibrahim, Nizar; Kao, Alex; Unwin, David M.; Smith, Roy; Martill, David M. (2020). "A new ?chaoyangopterid (Pterosauria: Pterodactyloidea) from the Cretaceous Kem Kem beds of Southern Morocco". Cretaceous Research. 110: Article 104410. doi:10.1016/j.cretres.2020.104410. S2CID   213739173.