Bizarre notosuchian crocodyliform with associated eggs from the Upper Cretaceous of Bolivia

Novas, Fernando E.; Pais, Diego F.; Pol, Diego; Carvalho, Ismar de Souza; Scanferla, Agustín; Mones, Álvaro; Riglos, Mario Súarez

doi:10.1671/039.029.0409

Cited by 62 publications

(96 citation statements)

References 11 publications

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“…As it was noted by Novas et al (2009), the premaxillary series is followed by a diastema and These teeth also bear a distally or slightly linguodistally oriented surface with three rows of cusps ( Figure 35(B)). The rows contain at least six to nine cusps.…”

Section: Dentition and Possible Extant Analoguesmentioning

confidence: 65%

“…Yacarerani from the Late Cretaceous of Bolivia (see below) was described as the sistertaxon of Adamantinasuchus (Novas et al 2009). Yacarerani has a dentition with multicusped teeth (although the cuspidate rows of the crowns have an almost mesiodistal orientation) quite similar to Adamantinasuchus and it possesses a strongly expanded supratemporal fenestra that was also supposed in Adamantinasuchus.…”

Section: Jaw Mechanism and Possible Phases Of Chewingmentioning

confidence: 99%

“…Type Locality-Amboro National Park, Santa Cruz de la Sierra, Bolivia (Novas et al 2009 Simosuchus from Madagascar is from the Maastrichtian).…”

Section: Notosuchia Gasparini 1971mentioning

confidence: 99%

“…shows an extreme heterodonty with procumbent, conical anterior and multicusped posterior teeth (Novas et al 2009). Dental morphology of Yacerarani shows that the oral cavity is divided into a narrow anterior and a triangular-shaped, posterior region by the fifth tooth pairs of the upper and lower jaws (Figure 36(E-H)).…”

Section: Dentition and Possible Extant Analoguesmentioning

confidence: 99%

“…Unfortunately, I was not able to study the specimens personally, thus no detailed dental wear analysis is available in this specimen. The observations presented here are based on the figures of Novas et al (2009) and the photograps seen in Figure 36. The most frequent type of wear on the anterior teeth is apical wear that can be observed on the first three premaxillary teeth but it is also present on the first right dentary tooth.…”

Section: Dental Wearmentioning

confidence: 99%

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The evolution of jaw mechanism and dental function in heterodont crocodyliforms

Ősi

2013

Historical Biology

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Heterodont dentition sometimes including multicuspid crowns appeared in numerous fossil forms through all main lineages of the Crocodyliformes. Teeth in these complex dentitions frequently bear wear facets that are exclusive indicators of tooth-tooth occlusion. Besides dental features, specializations of the jaw apparatus, jaw adductors and mandibular movement can be recognized, all reflecting a high variability of jaw mechanism and of intraoral food

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Section: Dentition and Possible Extant Analoguesmentioning

confidence: 65%

Section: Jaw Mechanism and Possible Phases Of Chewingmentioning

confidence: 99%

“…Type Locality-Amboro National Park, Santa Cruz de la Sierra, Bolivia (Novas et al 2009 Simosuchus from Madagascar is from the Maastrichtian).…”

Section: Notosuchia Gasparini 1971mentioning

confidence: 99%

Section: Dentition and Possible Extant Analoguesmentioning

confidence: 99%

Section: Dental Wearmentioning

confidence: 99%

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The evolution of jaw mechanism and dental function in heterodont crocodyliforms

Ősi

2013

Historical Biology

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An Enigmatic Small Neosuchian Crocodyliform from the Woodbine Formation of Texas

Noto

Drumheller

Adams

et al. 2019

The Anatomical Record

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New discoveries at the Arlington Archosaur Site (AAS), a Cenomanian (Late Cretaceous) locality in north‐central Texas, are filling gaps in our knowledge of mid‐Cretaceous Appalachian ecosystems, which remain poorly characterized. The AAS is notable because it preserves a diverse crocodyliform record. As seen in other sites that preserve four or more crocodyliform taxa, the species present at the AAS exhibit different snout shapes and body sizes, indicating that this high diversity of sympatric species was likely sustainable due to niche partitioning. Here we describe Scolomastax sahlsteini gen. et sp. nov., a new species of crocodyliform from the AAS, currently known from a partial right mandibular ramus. This species differs from other crocodyliforms in possessing features associated with durophagy or omnivory, including a shortened mandible, reduced tooth count, heterodonty, a dorsally expanded surangular, and enlarged attachments for jaw adductor muscles. Our phylogenetic analysis places this new taxon within Eusuchia as a member of Paralligatoridae and sister taxon to Paralligator gradilifrons. Scolomastax sahlsteini extends the record of paralligatorids into the Late Cretaceous of North America. This discovery represents the first appearance of this clade on the poorly known landmass of Appalachia, supporting a biogeographic connection between North America and Asia in the Early Cretaceous prior to completion of the Western Interior Seaway. However, relationships among other endemic crocodyliforms and tree instability within Paralligatoridae suggest further analysis is needed to resolve phylogenetic and biogeographic relationships (http://zoobank.org/urn:lsid:zoobank.org:pub:DC114471-6687-4BB5-8FAE-96F7278B1DAF). Anat Rec, 303:801–812, 2020. © 2019 Wiley Periodicals, Inc.

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Dispatches from the age of crocodiles: New discoveries from ancient lineages

Holliday

Schachner

2022

The Anatomical Record

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Crocodilians inspire researchers and the public alike with their explosive hunting methodologies, distinct craniofacial and dental morphology, and resplendent fossil record. This special issue highlights recent advances in the biology and paleontology of this fascinating lineage of vertebrates. The authors in this volume bring crocodylians and their extinct ancestors to life using a variety of approaches including fieldwork, imaging, 3D modeling, developmental biology, physiological monitoring, dissection, and a host of other comparative methods. Our journey begins with early crocodylomorphs from the Triassic, carries us through the radiation of crocodyliforms during the rest of the Mesozoic Era, and finally celebrates the diversification development and biology of extant crocodylians. Crocodyliform science has grown appreciably the past few decades. New fossil species and genetic evidence continue to keep phylogenies and our understanding of relationships wavering in key places of the tree such as the relationships of the extinct marine thalattosuchians as well as still living species like gharials. The application of imaging approaches and 3D modeling to both preserved tissues as well as living specimens is now revealing patterns in brain and lung evolution and function, growth strategies, and feeding and locomotor behaviors across the lineage. Comparative anatomical studies are offering new data on genitals, cephalic venous drainage and thoracoabdominal pressures. The new discoveries found here only reveal there is far more work to be done to understand the biology and behavior responsible for the great radiation extinct suchians and their crocodylian descendants experienced during their conquest of Mesozoic and Tertiary ecosystems.

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Bizarre notosuchian crocodyliform with associated eggs from the Upper Cretaceous of Bolivia

Cited by 62 publications

References 11 publications

The evolution of jaw mechanism and dental function in heterodont crocodyliforms

The evolution of jaw mechanism and dental function in heterodont crocodyliforms

An Enigmatic Small Neosuchian Crocodyliform from the Woodbine Formation of Texas

Dispatches from the age of crocodiles: New discoveries from ancient lineages

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