The DOI matches its Crossref record; 37 of the 37 references it cites were found in a registry or an index.
A Devonian tetrapod-like fish and the evolution of the tetrapod body plan
Abstract
The relationship of limbed vertebrates (tetrapods) to lobe-finned fish (sarcopterygians) is well established, but the origin of major tetrapod features has remained obscure for lack of fossils that document the sequence of evolutionary changes. Here we report the discovery of a well-preserved species of fossil sarcopterygian fish from the Late Devonian of Arctic Canada that represents an intermediate between fish with fins and tetrapods with limbs, and provides unique insights into how and in what order important tetrapod characters arose. Although the body scales, fin rays, lower jaw and palate are comparable to those in more primitive sarcopterygians, the new species also has a shortened skull roof, a modified ear region, a mobile neck, a functional wrist joint, and other features that presage tetrapod conditions. The morphological features and geological setting of this new animal are suggestive of life in shallow-water, marginal and subaerial habitats.
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“The first land invasion of our fish ancestors is considered to have occurred during the late Devonian period ~370 million years ago (Mya) (Daeschler et al., 2006).”
From Ancestral developmental potentials in early bony fish contributed to vertebrate water-to-land transition (2021) · cites this paper as Daeschler et al., 2006
In the citing paper
“Geological and anatomical evidence is strongly indicative that Tiktaalik was an animal interacting with the substrate in an aquatic context (12, 42, 43).”
From Fin ray patterns at the fin-to-limb transition (2020) · cites this paper as [42]
Citations
Cites
Janvier, P. (1996) · doi:10.1093/oso/9780198540472.001.0001 · Cited by 792
Nelson, J. S., Stiassny, M. L. J., Parenti, L. R., & Johnson, G. D. (1997) · Copeia · doi:10.2307/1447582 · Cited by 547
The pectoral fin of Tiktaalik roseae and the origin of the tetrapod limb
Shubin, N. H., Daeschler, E. B., & Jenkins, F. A. (2006) · Nature · doi:10.1038/nature04637 · Cited by 377
Self-citationCoates, M. I. (1996) · Transactions of the Royal Society of Edinburgh: Earth Sciences · doi:10.1017/s0263593300006787 · Cited by 260
Geology of the Innuitian Orogen and Arctic Platform of Canada and Greenland
Trettin, H. P. (1991) · Geological Society of America eBooks · doi:10.1130/dnag-gna-e · Cited by 216
Morphology, Characters, and the Interrelationships of Basal Sarcopterygians
Cloutier, R., & Ahlberg, P. (1996) · Elsevier eBooks · doi:10.1016/b978-012670950-6/50018-7 · Cited by 202
Devonian Fishes and Plants of Miguasha, Quebec, Canada
Wilson, M. V. H., Schultze, H., & Cloutier, R. (1997) · Copeia · doi:10.2307/1447873 · Cited by 193
Gaining ground: the origin and evolution of tetrapods
(2002) · Choice Reviews Online · doi:10.5860/choice.40-2180 · Cited by 192
A re-examination of sarcopterygian interrelationships, with special reference to the Porolepiformes
Ahlberg, P. (1991) · Zoological Journal of the Linnean Society · doi:10.1111/j.1096-3642.1991.tb00905.x · Cited by 187
Herpetichthyes, Amphibioidei, Choanichthyes or Sarcopterygii?
Romer, A. S. (1955) · Nature · doi:10.1038/176126a0 · Cited by 166
Research works printed but not linked: 6
- Vorobyeva, E. I. Morphology of the humerus in the Rhipidistian Crossopterygii and the origin of tetrapods. Paleontol. J. 34, 632–641 (2000)
- Chi, B. I. & Hills, L. V. Biostratigraphy and taxonomy of Devonian megaspores. Bull. Can. Petrol. Geol. 24, 640–813 (1976)
- Vorobyeva, E. I. Panderichthyida—A new order of Paleozoic crossopterygian fishes (Rhipidistia). Dokl. Akad. Nauk SSR 306, 188–189 (1989)
- Clack, J. A. Acanthostega gunnari, a Devonian tetrapod from Greenland: the snout, palate and ventral parts of the braincase, with a discussion of their significance. Medd. Groen. Geosci. 31, 1–24 (1994)
- Luksevics, E. & Zupins, I. Sedimentology, fauna, and taphonomy of the Pavari site, Late Devonian of Latvia. Acta Univ. Latviensis 679, 99–119 (2004)
- Chidiac, Y. in Devonian Fishes and Plants of Miguasha, Quebec, Canada (eds Schultze, H.-P. & Cloutier, R.) 47–53 (Friedrich Pfeil, Munchen, 1996)
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Metadata
- Authors
- Daeschler, E. B., Shubin, N. H., & Jenkins, F. A.
- Affiliations
- University of Chicago (US)
- Harvard University (US)
- Corresponding author
- Daeschler, Edward B.
- Shubin, Neil H.
- ORCID
- Shubin, Neil H.
- Venue
- Nature
- Published
- 2006-04
- Volume
- 440
- Issue
- 7085
- Pages
- 757-763
- ISSN
- 0028-0836 (ISSN-L)
- 1476-4687
- OpenAlex
- W2094370487
- Cited by
- 442
- References
- 37
- Citations by year
- 2026: 11 · 2025: 18 · 2024: 23 · 2023: 14 · 2022: 21 · 2021: 18 · 2020: 22 · 2019: 25 · 2018: 33 · 2017: 22 · 2016: 19 · 2015: 21 · 2014: 26 · 2013: 16 · 2012: 21
- FWCI
- 21.96
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- www.springer.com/tdm (tdm)
- Locations
- Nature (publishedVersion)
- PubMed (publishedVersion)
- RePEc: Research Papers in Economics (submittedVersion)
- Funders
- National Science Foundation
- National Geographic Society
- Harvard University
- University of Chicago
- Government of Nunavut
- Topics
- Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Evolutionary Biology
- Physical Sciences › Earth and Planetary Sciences › Paleontology › Evolution and Paleontology Studies
- Life Sciences › Agricultural and Biological Sciences › Aquatic Science › Fish Biology and Ecology Studies
- Keywords
- sarcopterygians, lobe-finned fishes, tetrapod origin, transitional fossils, wrist, skull roof, ear region, Late Devonian, Canadian Arctic
- MeSH terms
- Animals, Environment, Biological Evolution, Extremities, Fishes, Fossils, Morphogenesis, Phylogeny, Skull, Water, History, Ancient
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