New ctenochasmatid pterosaur record for Gondwana: discovery in the Lower Cretaceous continental deposits of the Atacama Desert, northern Chile

Alarcón-Muñoz, Jhonatan; Soto‐Acuña, Sergio; Codorniú, Laura; Rubilar-Rogers, David; Sallaberry, Michel; Suárez, Manuel

doi:10.1016/j.cretres.2020.104378

Cited by 10 publications

(13 citation statements)

References 51 publications

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“…This morphology, together with the high dental density (approximately 6 teeth/cm) and the oblique orientation of the teeth with respect to the longitudinal axis of the snout are features consistent with the known morphology within the family Ctenochasmatidae, a group of filterfeeding pterosaurs with fine, closely-spaced teeth (Wellnhofer 1991, Martill et al 2006, Qvarnström et al 2019. This group has been previously reported from Cerro La Isla, based on fragmentary mandibular remains, a rostral fragment, and cervical vertebrae (Martill et al 2006, Alarcón-Muñoz et al 2020.…”

Section: Discussionsupporting

confidence: 82%

“…SGO.PV.347-c shows several similarities with other previously published fragments of toothbearing elements. SGO.PV.377 was also discovered at Cerro La Isla and interpreted as a post-symphyseal dentary fragment by Alarcón-Muñoz et al (2020). It has subparallel margins; its medial wall is thinner than the lateral and it bears approximately 9 teeth/cm.…”

Section: Descriptionmentioning

confidence: 99%

“…Pterosaurs (Archosauria: Pterosauria) were a successful group of flying archosaurs that lived alongside dinosaurs during the Mesozoic (Wellnhofer, 1991). Unlike other South American countries such as Brazil and Argentina, pterosaurs are poorly known in the fossil record of Chile (Soto-Acuña et al 2015, Alarcón-Muñoz et al 2020, 2021. So far, four localities with pterosaur remains are known in Chile, all within the Antofagasta and Atacama regions (Bell and Suárez 1989, Martill et al 2000, Alarcón-Muñoz et al 2018, 2020, 2021.…”

Section: Introductionmentioning

confidence: 99%

“…Unlike other South American countries such as Brazil and Argentina, pterosaurs are poorly known in the fossil record of Chile (Soto-Acuña et al 2015, Alarcón-Muñoz et al 2020, 2021. So far, four localities with pterosaur remains are known in Chile, all within the Antofagasta and Atacama regions (Bell and Suárez 1989, Martill et al 2000, Alarcón-Muñoz et al 2018, 2020, 2021. However, knowledge concerning their morphology, phylogenetic and biogeographic relationships is still limited.…”

Section: Introductionmentioning

confidence: 99%

“…Based on the study of some isolated bones, it has been concluded that the Cerro La Isla pterosaurs belong to the family Ctenochasmatidae (Martill et al 2006, Alarcón-Muñoz et al 2020. Ctenochasmatids are a group of pterodactyloids characterized by having long necks and long snouts with multiple fine teeth, which would have allowed them to feed by water filtration (Martill et al 2006, Qvarnström et al 2019.…”

Section: Introductionmentioning

confidence: 99%

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Note on new pterosaur remains (Archosauria: Pterodactyloidea) from Cerro La Isla, Atacama region, northern Chile

Muñoz¹,

Oviedo²,

Bajor³

et al. 2022

Boletín MNHN

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In this study, new isolated fragmentary pterosaur bones are described from Lower Cretaceous outcrops exposed at Cerro La Isla, a site located approximately 95 km east of Copiapó city, Atacama region, northern Chile. The material consists of a jaw fragment with broken teeth, the caudal portion of a mid-cervical vertebra and the distal portion of a femur. Based on their morphology, the jaw and cervical fragments are assigned to Ctenochasmatidae, a group of pterodactyloid pterosaurs that has been previously reported from this locality, while the femur lacks diagnostic characters that would allow its referral to a more exclusive taxon than Pterodactyloidea indet. This new material confirms the previously proposed presence of ctenochasmatid pterosaurs in the Cretaceous outcrops of Cerro La Isla, and increases the diversity of their skeletal elements discovered at the site.

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