ArticleNature ecology & evolution2021
Acanthodian dental development and the origin of gnathostome dentitions.
Article in Nature ecology & evolution, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed, 26 citations in OpenAlex.
- Investigating the Morphogenesis and Replacement of Lamprey Toothlets Using Synchrotron Imaging.Journal of morphology · 2025Review
- A new 'acanthothoracid' placoderm from the Arctic Canada (Early Devonian) and its bearing on the evolution of jaws and teeth.Royal Society open science · 2025Article
- The shoulder girdle of early chondrichthyans grew by skeletal remodelling.Biology letters · 2025Article
- Morphogenesis of pteraspid heterostracan oral plates and the evolutionary origin of teeth.Royal Society open science · 2024Article
- Bony-fish-like scales in a Silurian maxillate placoderm.Nature communications · 2023Article
- Article
- The oldest gnathostome teeth.Nature · 2022Article
- A "Mammalian-like" Pycnodont Fish: Independent Acquisition of Thecodont Implantation, True Vertical Replacement, and Carnassial Dentitions in Carnivorous Mammals and a Peculiar Group of Pycnodont Fish.Life (Basel, Switzerland) · 2022Article
- The conundrum of pharyngeal teeth origin: the role of germ layers, pouches, and gill slits.Biological reviews of the Cambridge Philosophical Society · 2022Review
- Article
- Diverse stem-chondrichthyan oral structures and evidence for an independently acquired acanthodid dentition.Royal Society open science · 2021Article
- Mineralized Cartilage and Bone-Like Tissues in Chondrichthyans Offer Potential Insights Into the Evolution and Development of Mineralized Tissues in the Vertebrate Endoskeleton.Frontiers in genetics · 2021Review
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Authors and funding
6 authors at 4 institutions in 4 countries.
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Abstract
Chondrichthyan dentitions are conventionally interpreted to reflect the ancestral gnathostome condition but interpretations of osteichthyan dental evolution in this light have proved unsuccessful, perhaps because chondrichthyan dentitions are equally specialized, or else evolved independently. Ischnacanthid acanthodians are stem-Chondrichthyes; as phylogenetic intermediates of osteichthyans and crown-chondrichthyans, the nature of their enigmatic dentition may inform homology and the ancestral gnathostome condition. Here we show that ischnacanthid marginal dentitions were statodont, composed of multicuspidate teeth added in distally diverging rows and through proximal superpositional replacement, while their symphyseal tooth whorls are comparable to chondrichthyan and osteichthyan counterparts. Ancestral state estimation indicates the presence of oral tubercles on the jaws of the gnathostome crown-ancestor; tooth whorls or tooth rows evolved independently in placoderms, osteichthyans, ischnacanthids, other acanthodians and crown-chondrichthyans. Crown-chondrichthyan dentitions are derived relative to the gnathostome crown-ancestor, which possessed a simple dentition and lacked a permanent dental lamina, which evolved independently in Chondrichthyes and Osteichthyes.
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