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Feeding structures in the ray-finned fish Eurynotus crenatus (Actinopterygii: Eurynotiformes): implications for trophic diversification among Carboniferous actinopterygians

  • Matt FRIEDMAN (a1), Stephanie E. PIERCE (a2), Michael COATES (a3) and Sam GILES (a4)


The Permo-Carboniferous eurynotiforms show conspicuous modifications to postcranial and cranial morphology relative to primitive actinopterygian conditions, and represent an important early example of functional experimentation within ray-finned fishes. Although eurynotiforms are represented by abundant articulated fossil material, the internal anatomy of the group is not well known. Microcomputed tomography (μCT) of Eurynotus crenatus from the early Carboniferous (Viséan) Wardie Shales Member of the Gullane Formation of Wardie, Scotland provides detailed information on the jaws, palate and dentition. The lower jaw is deep and bears a well-developed convex dental plate on the prearticular/coronoids. The dentary bears a dorsally directed posterior process and lacks any obvious marginal dentition. The prearticular bears a low coronoid process. Apart from the first and second dermopalatines, and a likely accessory vomer, bones of the palate are tightly sutured or fused. The upper dental plate comprises a longitudinal, concave horizontal dental surface that occludes with the convex lower toothplate, and a more vertical region consisting of anastomosing ridges. The parasphenoid has a narrow anterior corpus and a broad posterior stalk that bears a pronounced midline notch. The smooth, irregularly punctated surfaces of the dental plates are formed by closely packed teeth with conjoined crowns, providing clues to the evolution of the more monolithic toothplates of Amphicentrum from the peg-like teeth reported in the earliest and most anatomically generalised eurynotiforms. The feeding apparatus shows many qualitative and quantitative features consistent with the processing of hard prey items. Eurynotus and its relatives show the first clear example of jaw and dental structures consistent with durophagy among actinopterygians. The origin of the group in the early Carboniferous is suggestive of diversification into newly available ecological roles in the aftermath of the end-Devonian extinction.


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Agassiz, L. 1835. Recherches sur les poissons fossiles. Tome II. Neuchatel: Imprimerie de Petitpierre. xii+336 pp.+LXXV pls.
Ahlberg, P. E., Smith, M. M. & Johanson, Z. 2006. Developmental plasticity and disparity in early dipnoan (lungfish) dentitions. Evolution & Development 8, 331349.
Ahlberg, P. E. & Trewin, N. H. 1995. The postcranial skeleton of the Middle Devonian lungfish Dipterus valenciennesi. Transactions of the Royal Society of Edinburgh: Earth Sciences 85, 159175.
Anderson, J. S., Carroll, R. L. & Rowe, T. B. 2003. New information on Lethiscus stocki (Tetrapoda: Lepospondyli: Aistopoda) from high-resolution computed tomography and a phylogenetic analysis of Aistopoda. Canadian Journal of Earth Sciences 40, 10711083.
Anderson, P. S., Friedman, M., Brazeau, M. D. & Rayfield, E. J. 2011. Initial radiation of jaws demonstrated stability despite faunal and environmental change. Nature 476, 206209.
Bardack, D. 1997. Fishes: ‘Agnatha', Acanthodii, and Osteichthyes. In Shabica, C. W. & Hay, A. A. (eds) Richardson's guide to the fossil fauna of Mazon Creek, 226243. Chicago: Northeastern Illinois University.
Barel, C. D. N. 1983. Toward a constructional morphology of cichlid fishes (Teleostei, Perciformes). Netherlands Journal of Zoology 33, 357424.
Bellwood, D. R. 2003. Origins and escalation of herbivory in fishes: a functional perspective. Paleobiology 29, 7183.
Bemis, K. E., Tyler, J. C., Bemis, W. E., Kumar, K., Rana, R. S. & Smith, T. 2017. A gymnodont fish jaw with remarkable molariform teeth from the early Eocene of Gujarat, India (Teleostei, Tetraodontiformes). Journal of Vertebrate Paleontology 37, e1369422.
Bemis, W. E. 1986. Feeding systems of living Dipnoi: anatomy and function. Journal of Morphology 190(Suppl.), 249275.
Böttcher, R. 2014. Phyllodont tooth plates of Bobasatrania scutata (Gervais, 1852) (Actinopterygii, Bobasatraniiformes) from the Middle Triassic (Longobardian) Grenzbonebed of southern Germany and eastern France, with an overview of Triassic and Palaeozoic phyllodont tooth plates. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen 274, 291311.
Boulenger, G. A. 1902. VIII. – Further remarks on the Carboniferous Ganoid, Benedenius deneensis, Traquair. Journal of Natural History 10, 5253.
Bradley Dyne, M. 1939. The skull of Amphicentrum granulosum. Proceedings of the Zoological Society of London, Series B 1939, 195210.
Campbell, K. S. W. & Barwick, R. E. 1990. Paleozoic dipnoan phylogeny: functional complexes and evolution without parsimony. Paleobiology 16, 143169.
Case, E. C. 1931. Arthodiran remains from the Devonian of Michigan. Contributions from the Museum of Paleontology 3, 163182.
Case, E. C. 1937. The brain and skull of a paleoniscid fish from the Pennsylvanian of western Missouri. Proceedings of the American Philosophical Society 78, 110.
Chang, M.-M. 1995. Diabolepis and its bearing on the relationships between porolepiforms and dipnoans. Bulletin du Muséum national d'Histoire naturelle, Paris, 4e série, Section C 17, 235268.
Chisholm, J. I., McAdam, A. D. & Brand, P. J. 1989. Lithostratigraphical classification of Upper Devonian and Lower Carboniferous rocks in the Lothians. British Geological Survey Technical Report WA/89/26.
Chisholm, J. I. & Brand, P. J. 1994. Revision of the late Dinantian sequence in Edinburgh and West Lothian. Scottish Journal of Geology 30, 97104.
Choo, B. 2012. Revision of the actinopterygian genus Mimipiscis (=Mimia) from the Upper Devonian Gogo Formation of Western Australia and the interrelationships of the early Actinopterygii. Earth and Environmental Science Transactions of the Royal Society of Edinburgh 102, 77104.
Choo, B., Zhu, M., Zhao, W., Jia, L. & Zhu, Y.-A. 2014. The largest Silurian vertebrate and its palaeoecological implications. Scientific Reports 4, 5242.
Clack, J. A., Bennett, C. E., Carpenter, D. K., Davies, S. J., Fraser, N. C., Kearsey, T. I., Marshall, J. E. A., Millward, D., Otoo, B. K. A., Reeves, E. J., Ross, A. J., Ruta, M., Smithson, K. Z., Smithson, T. R. & Walsh, S. A. 2016. Phylogenetic and environmental context of a Tournaisian tetrapod fauna. Nature Ecology & Evolution 1, 0002.
Clarkson, E. N. K. 1985. Palaeoecology of the Dinantian of Foulden, Berwickshire, Scotland. Transactions of the Royal Society of Edinburgh: Earth Sciences 76, 97100.
Claverie, T. & Wainwright, P. C. 2014. A morphospace for reef fishes: elongation is the dominant axis of body shape evolution. PLoS One 9, e112732.
Close, R. A., Johanson, Z., Tyler, J. C., Harrington, R. C. & Friedman, M. 2016. Mosaicism in a new Eocene pufferfish highlights rapid morphological innovation near the origin of crown tetraodontiforms. Palaeontology 59, 499514.
Coates, M. I. 1993. New actinopterygian fish from the Namurian Manse Burn Formation of Bearsden, Scotland. Palaeontology 36, 123146.
Coates, M. I. 1994. Actinopterygian and acanthodian fishes from the Viséan of East Kirkton, West Lothian, Scotland. Transactions of the Royal Society of Edinburgh: Earth Sciences 84, 317327.
Coates, M. I. 1998. Actinopterygians from the Namurian of Bearsden, Scotland, with comments on early actinopterygian neurocrania. In Norman, D. B., Milner, A. R. & Milner, A. C. (eds) A study of fossil vertebrates, 122, 2759. London: Zoological Journal of the Linnean Society.
Coates, M. I. 1999. Endocranial preservation of a Carboniferous actinopterygian from Lancashire, UK, and the interrelationships of primitive actinopterygians. Philosophical Transactions of the Royal Society of London, Series B 354, 435462.
Coates, M. I., Gess, R. W., Finarelli, J. A., Criswell, K. E. & Tietjen, K. 2017. A symmoriiform chondrichthyan braincase and the origin of chimaeroid fishes. Nature 541, 208211.
Coates, M. I. & Sequeira, S. E. K. 2001. A new stethacanthid chondrichthyan from the Lower Carboniferous of Bearsden, Scotland. Journal of Vertebrate Paleontology 21, 438459.
Coates, M. I. & Tietjen, K. 2018. The neurocranium of the Lower Carboniferous shark Tristychius arcuatus (Agassiz, 1837). Earth and Environmental Science Transactions of the Royal Society of Edinburgh 108, 1935.
Coates, M. I. & Tietjen, K. 2019. ‘This strange little palaeoniscid': a new early actinopterygian genus, and commentary on pectoral fin conditions and function. Earth and Environmental Science Transactions of the Royal Society of Edinburgh. DOI: 10.1017/S1755691018000403.
Crofts, S. B. & Summers, A. P. 2014. How to best smash a snail: the effect of tooth shape on crushing load. Journal of the Royal Society Interface 11, 20131053.
Currie, E. D. 1954. Scottish carboniferous goniatites. Transactions of the Royal Society of Edinburgh 62, 527602+IV pls.
Darras, L., Derycke, C., Blieck, A. & Vachard, D. 2008. The oldest holocephalan (Chondrichthyes) from the Middle Devonian of the Boulonnais (Pas-de-Calais, France). Comptes Rendus Palevol 7, 297304.
Davydov, V. I., Korn, D. & Schmitz, M. D. 2012. The carboniferous period. In Gradstein, F. M., Schmitz, M. & Ogg, G. (eds) The geologic timescale 2012, 1, 603651. Amsterdam: Elsevier.
De Koninck, L. G. 1878. Fauna du Calcaire carbonifère de la Belgique. Annales du Museé Royal d'Historie Naturelle de Belgique 2, 1152+31 pls.
Denison, R. 1978. Placodermi. In Schultze, H.-P. (ed.) Handbook of paleoichthyology, 2, 1128. Suttgart: Gustav Fischer Verlag.
Denison, R. H. 1985. A new ptyctodont placoderm, Ptyctodopsis, from the Middle Devonian of Iowa. Journal of Paleontology 59, 511522.
Dick, J. R. F. 1978. On the carboniferous shark Tristychius arcuatus Agassiz from Scotland. Transactions of the Royal Society of Edinburgh 70, 63109.
Dick, J. R. F. 1981. Diplodoselache woodi, gen. et sp. nov. an early carboniferous shark from the Midland Valley of Scotland. Transactions of the Royal Society of Edinburgh: Earth Sciences 72, 99113.
Dick, J. R. F. 1998. Sphenacanthus, a Palaeozoic freshwater shark. Zoological Journal of the Linnean Society 122, 925.
Dineley, D. L. & Metcalf, S. J. 1999. Fossil fishes of Great Britain. Peterborough: Joint Nature Conservation Committee.
Egerton, P. D. G. 1850. Palichthyologic notes. No. 3. – on the Ganoidei Heterocerci. Quarterly Journal of the Geological Society of London 6, 110+II pls.
Finarelli, J. A. & Coates, M. I. 2012. First tooth-set outside the jaws in a vertebrate. Proceedings of the Royal Society B 279, 775–9.
Friedman, M. 2015. The early evolution of ray-finned fishes. Palaeontology 58, 213228.
Friedman, M. & Giles, S. 2016. Actinopterygians: the ray-finned fishes – an explosion of diversity. In Clack, J. A., Fay, R. & Popper, A. (eds) Evolution of the vertebrate ear. Springer Handbook of Auditory Research, 59, 1749. Berlin: Springer Verlag.
Friedman, M. & Sallan, L. C. 2012. Five hundred million years of extinction and recovery: a Phanerozoic survey of large-scale diversity patterns in fishes. Palaeontology 55, 707742.
Gardiner, B. G. 1963. Certain palaeoniscoid fishes and the evolution of the snout in actinopterygians. Bulletin of the British Museum Natural History): Geology 8, 255325+II pls.
Gardiner, B. G. 1984. The relationships of the palaeoniscid fishes, a review based on new specimens of Mimia and Moythomasia from the Upper Devonian of Western Australia. Bulletin of the British Museum (Natural History): Geology 37, 173428.
Gardiner, B. G. & Schaeffer, B. 1989. Interrelationships of lower actinopterygian fishes. Zoological Journal of the Linnean Society 97, 135187.
Giles, S., Darras, L., Clément, G., Blieck, A. & Friedman, M. 2015. An exceptionally preserved Late Devonian actinopterygian provides a new model for primitive cranial anatomy in ray-finned fishes. Proceedings of the Royal Society B 282, 20151485.
Giles, S., Xu, G.-H., Near, T. J. & Friedman, M. 2017. Early members of ‘living fossil' lineage imply later origin of modern ray-finned fishes. Nature 549, 265268.
Giles, S. & Friedman, M. 2014. Virtual reconstruction of endocast anatomy in early ray-finned fishes (Osteichthyes, Actinopterygii). Journal of Paleontology 88, 636651.
Greensmith, J. T. 1962. Rhythmic deposition in the Carboniferous Oil-Shale Group of Scotland. The Journal of Geology 70, 355364.
Hamel, M. H. & Poplin, C. 2008. The braincase anatomy of Lawrenciella schaefferi, actinopterygian from the Upper Carboniferous of Kansas (USA). Journal of Vertebrate Paleontology 28, 9891006.
Henrichsen, I. G. C. 1970. A catalogue of fossil vertebrates in the Royal Scottish Museum, Edinburgh. Part One/Actinopterygii. Royal Scottish Museum, Information Series, Geology 1, ix+1–102.
Hlavin, W. J. & Boreske, J. R. Jr. 1973. Mylostoma variabile Newberry, an Upper Devonian durophagous brachythoracid arthrodire, with notes on related taxa. Berviora 412, 112.
Latimer, A. E. & Giles, S. 2018. A giant dapediid from the Late Triassic of Switzerland and insights into neopterygian phylogeny. Royal Society Open Science 5, 180497.
Lloyd, G. T., Wang, S. C. & Brusatte, S. L. 2012. Identifying heterogeneity in rates of morphological evolution: discrete character change in the evolution of lungfish (Sarcopterygii; Dipnoi). Evolution 66, 330348.
Lombardo, C. & Tintori, A. 2005. Feeding specializations in Late Triassic fishes. Annali dell'Università degli Studi di Ferrara, Museologia Scientifica e Naturalistica, Volume Speciale 2005, 2532.
López-Arbarello, A. & Sferco, E. 2011. New semionotiform (Actinopterygii: Neopterygii) from the Late Jurassic of southern Germany. Journal of Systematic Palaeontology 9, 197215.
Mark-Kurik, E. 1977. The structure of the shoulder girdle in early ptyctodontids. In Menner, V. V. (ed.) Ocherki po filogenii i sistemaike iskopaemykh myb i beschelyustryck [Sketches in phylogenesis and taxonomy of fossil fishes and Agnatha], 6170. Moscow: Nauk.
Monoghan, A. A., Browne, M. A. E. & Barford, D. N. 2014. An improved chronology for the Arthur's Seat volcano and Carboniferous magmatism of the Midland Valley of Scotland. Scottish Journal of Geology 50, 165172.
Moodie, R. L. 1915. A new fish brain from the coal measures of Kansas with a review of other fossil brains. Journal of Comparative Neurology 25, 135181.
Moodie, R. L. 1920. Microscopic examination of a fossil fish brain. Journal of Comparative Neurology 32, 329333.
Mottequin, B., Pouty, E. & Prestianni, C. 2015. Catalogue of types and illustrated specimens recovered from the ‘black marble' of Denée, a marine conservation-Lagerstätte from the Mississippian of southern Belgium. Geologica Belgica 18, 114.
Moy-Thomas, J. A. 1939. Palaeozoic fishes. London: Methuen.
Moy-Thomas, J. A. & Bradley Dyne, M. 1938. Actinopterygian fishes from the Lower Carboniferous of Glencartholm, Eksdale, Dumfriesshire. Transactions of the Royal Society of Edinburgh 59, 437480.
Nielsen, E. 1942. Studies on Triassic fishes from East Greenland. I. Glaucolepis and Boresomus. Meddelelser om Grønland 138, 1403+30 pls.
Nielsen, E. 1949. Studies on Triassic Fishes. II. Australosomus and Birgeria. Meddelelser om Grønland 146, 1309+20 pls.
Nursall, J. R. 1999. The family †Mesturidae and the skull of pycnodont fishes. In Arratia, G. & Schultze, H.-P. (eds) Mesozoic fishes 2 – systematics and fossil record, 153182. Munich: Verlag Dr Friedrich Pfeil.
Pardo, J. D., Szostakiwskyj, M., Ahlberg, P. E. & Anderson, J. S. 2017. Hidden morphological diversity among early tetrapods. Nature 546, 642645.
Poplin, C. M. 1974. Étude de quelques paléoniscidés pennsylvaniens du Kansas. Cahiers de Paléontologie, Paris: Éditions du CNRS. 151 pp.+XL pls.
Poplin, C. M. 1984. Lawrenciella schaefferi n.g., n.sp. (Pisces: Actinopterygii) and the use of endocranial characters in the classification of the Palaeonisciformes. Journal of Vertebrate Paleontology 4, 413421.
Poplin, C. M. & Véran, M. 1996. A revision of the actinopterygian fish Coccocephalichthys wildi from the Upper Carboniferous of Lancashire. In Milner, A. R. (ed.) Studies on Carboniferous and Permian vertebrates. Special Papers in Palaeontology, 52, 729. London: Palaeontological Association.
Pradel, A., Maisey, J. G., Mapes, R. H. & Kruta, I. 2016. First evidence of an intercalar bone in the braincase of “palaeonisciform” actinopterygians, with a virtual reconstruction of a new braincase of Lawrenciella poplin, 1984 from the Carboniferous of Oklahoma. Geodiversitas 38, 489504.
Rayner, D. H. 1952. On the cranial structure of an early palæoniscid, Kentuckia, gen. nov. Transactions of the Royal Society of Edinburgh 62, 5383.
Richards, K. R., Sherwin, J. E., Smithson, T. R., Bennion, R. F., Davies, S. J., Marshall, J. E. A. & Clack, J. A. 2018. Diverse and durophagous: early Carboniferous chondrichthyans from the Scottish Borders. Earth and Environmental Science Transactions of the Royal Society of Edinburgh 108, 6787.
Rieppel, O. 2002. Feeding mechanics in Triassic stem-group sauropterygians: the anatomy of a successful invasion of Mesozoic seas. Zoological Journal of the Linnean Society 135, 3363.
Romer, A. S. 1966. Vertebrate paleontology, 3rd edn. Chicago: University of Chicago Press.
Sallan, L. C. 2014. Major issues in the origins of ray-finned fish (Actinopterygii) biodiversity. Biological Reviews 89, 950971.
Sallan, L. C., Kammer, T. W., Ausich, W. I. & Cook, L. A. 2011. Persistent predator–prey dynamics revealed by mass extinction. Proceedings of the National Academy of Sciences of the USA 108, 83358338.
Sallan, L. C. & Coates, M. I. 2010. Proceedings of the National Academy of Sciences of the USA 107, 1013110135.
Sallan, L. C. & Coates, M. I. 2013. Styracopterid (Actinopterygii) ontogeny and the multiple origins of post-Hangenberg deep-bodied fishes. Zoological Journal of the Linnean Society 169, 156199.
Sallan, L. C. & Friedman, M. 2012. Heads or tails: staged diversification in vertebrate evolutionary radiations. Proceedings of the Royal Society of London B 279, 20252032.
Sallan, L. C. & Galimberti, A. K. 2015. Body-size reduction in vertebrates following the end-Devonian mass extinction. Science 350, 812815.
Schaeffer, B. & Dalquest, W. W. 1978. A palaeonisciform braincase from the Permian of Texas, with comments on cranial fissures and the posterior myodome. American Museum Novitates 2658, 115.
Schaeffer, B. & Rosen, D. E. 1961. Major adaptive levels in the evolution of the actinopterygian feeding mechanism. American Zoologist 1, 187204.
Schram, F. R. 1983. Lower Carboniferous biota of Glencartholm, Eksdale, Dumfriesshire. Scottish Journal of Geology 19, 115.
Signor, P. W. III & Brett, C. E. 1984. The mid-Paleozoic precursor to the Mesozoic marine revolution. Paleobiology 10, 229245.
Smithson, T. R., Wood, S. P., Marshall, J. E. & Clack, J. A. 2012. Earliest Carboniferous tetrapod and arthropod faunas from Scotland populate Romer's Gap. Proceedings of the National Academy of Sciences of the USA 109, 4532–7.
Smithson, T. R., Richards, K. R. & Clack, J. A. 2016. Lungfish diversity in Romer's Gap: reaction to the end-Devonian extinction. Palaeontology 59, 2944.
Smithwick, F. M. 2015. Feeding ecology of the deep-bodied fish Dapedium (actinopterygii, Neopterygii) from the Sinemurian of Dorset, England. Palaeontology 58, 293311.
Stahl, B. 1999. Chondrichthyes III, Holocephali. In Schultze, H.-P. (ed.) Handbook of paleoichthyology, 4, 1164. Munich: Verlag Dr. Friedrich Pfeil.
Sumner, D. 1991. Palaeobiology, taphonomy and diagenesis of a Lower Carboniferous fish fauna. Unpublished PhD thesis, University of St Andrews, UK. 336 pp.
Thies, D. & Herzog, A. 1999. New information on Dapedium LEACH 1822 (Actinopterygii, Seminotiformes). In Arratia, G. & Schultze, H.-P. (eds), Mesozoic Fishes 2 – Systematics and Fossil Record, 143152. Munich: Verlag Dr Friedrich Pfeil.
Tintori, A. 1998. Fish biodiversity in the marine Norian (Late Triassic) of northern Italy: the first neopterygian radiation. Italian Journal of Zoology 65(Suppl.), 193198.
Traquair, R. H. 1867. Description of Pygopterus greenockii, with notes one the structural relations of the genera Pygopterus, Amblypterus and Eurynotus. Transactions of the Royal Society of Edinburgh 24, 701713+I pl.
Traquair, R. H. 1875. On some fossil fishes from the neighbourhood of Edinburgh. Journal of Natural History 15, 258268+I pl.
Traquair, R. H. 1877–1914. The Ganoid fishes of the British Carboniferous Formations. Part I. Palæoniscidae. London: Palaeontolographical Society.
Traquair, R. H. 1879. On the structure and affinities of the Playtsomidae. Transactions of the Royal Society of Edinburgh 29, 343391+IV pls.
Traquair, R. H. 1903. On the distribution of fossil fish-remains in the Carboniferous rocks of the Edinburgh district. Transactions of the Royal Society of Edinburgh 40, 687707.
Trinajstic, K. & Long, J. A. 2009. A new genus and species of ptyctodont (Placodermi) from the Late Devonian Gneudna Formation, Western Australia, and an analysis of ptyctodont phylogeny. Geological Magazine 146, 743760.
Tyler, J. C. 1980. Osteology, phylogeny, and higher classification of the fishes of the order Plectognathi (Tetraodontiformes). NOAA Technical Report NMFS Circular 434, 1422.
Ward, P., Labandeira, C., Laurin, M. & Berner, R. A. 2006. Confirmation of Romer's Gap as a low oxygen interval constraining the timing of initial arthropod and vertebrate terrestrialization. Proceedings of the National Academy of Sciences of the USA 103, 1681816822.
Waters, C. N., Browne, M. A. E., Jones, N. S. & Somerville, I. D. 2011a. Midland valley of Scotland. In Waters, C. N. (ed.) A revised correlation of Carboniferous rocks in the British Isles. Special Report Number 26, 96102. London: The Geological Society.
Waters, C. N., Somerville, I. D., Stephenson, M. H., Cleal, C. J. & Long, S. L. 2011b. Biostratigraphy. In Waters, C. N. (ed.) A revised correlation of Carboniferous rocks in the British Isles. Special Report Number 26, 1122. London: The Geological Society.
Watson, D. M. S. 1925. On the structure of certain palæoniscids and the relationships of that group with other bony fish. Proceedings of the Zoological Society of London 1925, 815870+II pls.
Watson, D. M. S. 1928. On some points in the structure of palæoniscid and allied fish. Proceedings of the Zoological Society of London 1928, 4970.
Westneat, M. W. 2004. Evolution of levers and linkages in the feeding mechanisms of fishes. Integrative and Comparative Biology 44, 378389.
Westoll, T. S. 1949. On the evolution of the Dipnoi. In Jepsen, G. L., Simpson, G. G. & Mayr, E. (eds) Genetics paleontology and evolution, 121184. Princeton: Princeton University Press.
Wilson, C. D., Pardo, J. D. & Anderson, J. S. 2018. A primitive actinopterygian braincase from the Tournaisian of Nova Scotia. Royal Society Open Science 5, 171727.
Wilson, R. B. 1989. A study of the Dinantian marine microfossils of central Scotland. Transactions of the Royal Society of Edinburgh 80, 91126.
Wood, S. P. 1975. Recent discoveries of Carboniferous fishes in Edinburgh. Scottish Journal of Geology 11, 251258.
Wood, S. P. 1982. New basal Namurian (Upper Carboniferous) fishes and crustaceans found near Glasgow. Nature 297, 574577.
Woodward, A. S. 1891. Catalogue of fossil fishes in the British Museum (Natural History). Part II. Containing the Elasmobranchii (Acanthodii), Holocephali, Ichthyodorulites, Ostracodermi, Dipnoi, and Teleostomi (Crossopterygii and Chondrostean Actinopterygii). London: Trustees of the British Museum (Natural History).
Woodward, A. S. 1895. Catalogue of fossil fishes in the British Museum (Natural History). Part III. Containing the Actinopterygian Teleostomi of the Orders Chondrostei (Concluded), Protospondyli, Aethospondyli, and Isospondyli (in Part). London: Trustees of the British Museum (Natural History).
Young, J. 1866. On the affinities of Platysomus and allied genera. Quarterly Journal of the Geological Society of London 22, 301317+II pls.
Zidek, J. 1992. Late Pennsylvanian Chondrichthyes, Acanthodii, and deep-bodied Actinopterygii from the Kinney Quarry, Manzanita Mountains, New Mexico. In Zidek, J. (ed.) Geology and paleontology of the Kinney Brick Quarry, Late Pennsylvanian, Central New Mexico, 138, 145182. Socorro, NM: New Mexico Bureau of Mines & Mineral Resources Bulletin.


Feeding structures in the ray-finned fish Eurynotus crenatus (Actinopterygii: Eurynotiformes): implications for trophic diversification among Carboniferous actinopterygians

  • Matt FRIEDMAN (a1), Stephanie E. PIERCE (a2), Michael COATES (a3) and Sam GILES (a4)


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