ArticleZoological journal of the Linnean Society2014
The characters of Palaeozoic jawed vertebrates.
Article in Zoological journal of the Linnean Society, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.
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Who cites it
31 citing papers in PubMed.
- A 3D braincase of the early jawed vertebrateNational science review · 2025Article
- The skeletal completeness of the Palaeozoic chondrichthyan fossil record.Royal Society open science · 2024Article
- Unique dental arrangement in a new species,PeerJ · 2024Article
- Article
- Evolution of median fin patterning and modularity in living and fossil osteichthyans.PloS one · 2023Article
- Phenotypic regionalization of the vertebral column in the thorny skate Amblyraja radiata: Stability and variation.Journal of anatomy · 2022Article
- Article
- Acanthodian dental development and the origin of gnathostome dentitions.Nature ecology & evolution · 2021Article
- Bone metabolism and evolutionary origin of osteocytes: Novel application of FIB-SEM tomography.Science advances · 2021Article
- Functional assessment of morphological homoplasy in stem-gnathostomes.Proceedings. Biological sciences · 2021Article
- Article
- Endoskeletal mineralization in chimaera and a comparative guide to tessellated cartilage in chondrichthyan fishes (sharks, rays and chimaera).Journal of the Royal Society, Interface · 2020Article
- Evolutionary and Developmental Associations of Neural Crest and Placodes in the Vertebrate Head: Insights From Jawless Vertebrates.Frontiers in physiology · 2020Review
- Morphology and evolutionary significance of phosphatic otoliths within the inner ears of cartilaginous fishes (Chondrichthyes).BMC evolutionary biology · 2019Article
- Reappraisal of the Silurian placodermRoyal Society open science · 2019Article
- New information onRoyal Society open science · 2018Article
- Neurocranial anatomy of the petalichthyid placodermPalaeontology · 2018Article
- An early chondrichthyan and the evolutionary assembly of a shark body plan.Proceedings. Biological sciences · 2018Article
- Redescription ofPeerJ · 2018Article
- A three-dimensional placoderm (stem-group gnathostome) pharyngeal skeleton and its implications for primitive gnathostome pharyngeal architecture.Journal of morphology · 2017Article
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2 authors.
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Abstract
Newly discovered fossils from the Silurian and Devonian periods are beginning to challenge embedded perceptions about the origin and early diversification of jawed vertebrates (gnathostomes). Nevertheless, an explicit cladistic framework for the relationships of these fossils relative to the principal crown lineages of the jawed vertebrates (osteichthyans: bony fishes and tetrapods; chondrichthyans: sharks, batoids, and chimaeras) remains elusive. We critically review the systematics and character distributions of early gnathostomes and provide a clearly stated hierarchy of synapomorphies covering the jaw-bearing stem gnathostomes and osteichthyan and chondrichthyan stem groups. We show that character lists, designed to support the monophyly of putative groups, tend to overstate their strength and lack cladistic corroboration. By contrast, synapomorphic hierarchies are more open to refutation and must explicitly confront conflicting evidence. Our proposed synapomorphy scheme is used to evaluate the status of the problematic fossil groups Acanthodii and Placodermi, and suggest profitable avenues for future research. We interpret placoderms as a paraphyletic array of stem-group gnathostomes, and suggest what we regard as two equally plausible placements of acanthodians: exclusively on the chondrichthyan stem, or distributed on both the chondrichthyan and osteichthyan stems.
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