ArticleCommunications biology2020
A symmoriiform from the Late Devonian of Morocco demonstrates a derived jaw function in ancient chondrichthyans.
Article in Communications biology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.
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Who cites it
19 citing papers in PubMed.
- Functional anatomy, jaw mechanisms, and feeding behavior of Dunkleosteus terrelli (Placodermi, Arthrodira).Anatomical record (Hoboken, N.J. : 2007) · 2026Article
- Diversity of tooth mineralisation patterns at the base of crown chondrichthyans.Communications biology · 2025Article
- Coelacanths illuminate deep-time evolution of cranial musculature in jawed vertebrates.Science advances · 2025Article
- Reconstruction of feeding behaviour and diet in Devonian ctenacanth chondrichthyans using dental microwear texture and finite element analyses.Royal Society open science · 2025Article
- The Palaeozoic assembly of the holocephalan body plan far preceded post-Cretaceous radiations into the ocean depths.Proceedings. Biological sciences · 2024Article
- The skeletal completeness of the Palaeozoic chondrichthyan fossil record.Royal Society open science · 2024Article
- Article
- Shark mandible evolution reveals patterns of trophic and habitat-mediated diversification.Communications biology · 2023Article
- Article
- Systematics and Phylogenetic Interrelationships of the Enigmatic Late Jurassic SharkDiversity · 2023Article
- Evidence for high-performance suction feeding in the Pennsylvanian stem-group holocephalanProceedings of the National Academy of Sciences of the United States of America · 2023Article
- Broad snouted cladoselachian with sensory specialization at the base of modern chondrichthyans.Swiss journal of palaeontology · 2023Article
- The Development of theJournal of developmental biology · 2022Article
- The Phylogeny of Rays and Skates (Chondrichthyes: Elasmobranchii) Based on Morphological Characters Revisited.Diversity · 2022Article
- Cranial morphology of the orectolobiform shark,Vertebrate zoology · 2022Article
- Article
- Diverse stem-chondrichthyan oral structures and evidence for an independently acquired acanthodid dentition.Royal Society open science · 2021Article
- The swimming traceSwiss journal of palaeontology · 2021Article
- A large Middle Devonian eubrachythoracid 'placoderm' (Arthrodira) jaw from northern Gondwana.Swiss journal of palaeontology · 2021Article
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5 authors.
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Abstract
The Palaeozoic record of chondrichthyans (sharks, rays, chimaeras, extinct relatives) and thus our knowledge of their anatomy and functional morphology is poor because of their predominantly cartilaginous skeletons. Here, we report a previously undescribed symmoriiform shark, Ferromirum oukherbouchi, from the Late Devonian of the Anti-Atlas. Computed tomography scanning reveals the undeformed shape of the jaws and hyoid arch, which are of a kind often used to represent primitive conditions for jawed vertebrates. Of critical importance, these closely fitting cartilages preclude the repeatedly hypothesized presence of a complete gill between mandibular and hyoid arches. We show that the jaw articulation is specialized and drives mandibular rotation outward when the mouth opens, and inward upon closure. The resultant eversion and inversion of the lower dentition presents a greater number of teeth to prey through the bite-cycle. This suggests an increased functional and ecomorphological disparity among chondrichthyans preceding and surviving the end-Devonian extinctions.
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