Published December 31, 2007 | Version v1
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The anatomy of Euphanerops longaevus Woodward, 1900, an anaspid-like jawless vertebrate from the Upper Devonian of Miguasha, Quebec, Canada

  • 1. UMR 5143 du CNRS, "Paléobiodiversité et Paléoenvironnements", Département Histoire de la Terre, Muséum national d'Histoire naturelle, case postale 38, 57 rue Cuvier, F-75231 Paris cedex 05 (France) janvier@mnhn.fr and The Natural History Museum, Cromwell Road, London SW7 5BD (United Kingdom)
  • 2. Musée d'Histoire naturelle, Parc national de Miguasha, CP 183, Nouvelle, Quebec GOC 2E0 (Canada) Marius.Arsenault@globetrotter.net

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Janvier, Philippe, Arsenault, Marius (2007): The anatomy of Euphanerops longaevus Woodward, 1900, an anaspid-like jawless vertebrate from the Upper Devonian of Miguasha, Quebec, Canada. Geodiversitas 29 (1): 143-216, DOI: 10.5281/zenodo.5377455

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References

  • ALDRIDGE R. J. & THERON J. N. 1993. - Conodonts with preserved soft tissue from a new Ordovician Konservat-Lagerstatte. Journal of Micropalaeontology 12: 113-117.
  • ALDRIDGE R. J., BRIGGS D. E. G. & CLARKSON E. N. K. 1986. - The affinities of the conodonts - new evidence from the Carboniferous of Edinburgh, Scotland. Lethaia 19: 279-291.
  • ARSENAULT M. & JANVIER P. 1991. - The anaspidlike craniates of the Escuminac Formation (Upper Devonian) from Miguasha (Quebec, Canada) with remarks on anaspid-petromyzontid relationships, in CHANG M. M., LIU Y. H. & ZHANG G. R. (eds), Early Vertebrates and Related Problems of Evolutionary Biology. Science Press, Beijing: 19-44.
  • ARSENAULT M., DESBIENS S., JANVIER P. & KERR J. 2004. - New data on the soft tissues and external morphology of the antiarch Bothriolepis canadensis (Whiteaves, 1880) from the Upper Devonian of Miguasha, Quebec, in ARRATIA G., CLOUTIER R. & WILSON M. V. H. (eds), Recent Advances in the Origin and Early Radiation of Vertebrates. Verlag Dr. Friedrich Pfeil, Munich: 439-454.
  • BARDACK D. & ZANGERL R. 1971. - Lampreys in the fossil record, in HARDISTY M. W. & POTTER I. C. (eds), The Biology of Lampreys, Volume 1. Academic Press, London: 67-84.
  • BELAND P. & ARSENAULT M. 1985. - Scaumenellisation de l'Acanthodii Triazeugacanthus affinis (Whiteaves) de la Formation d'Escuminac (Devonien superieur de Miguasha, Quebec) : revision de Scaumenella mesacanthi Graham-Smith. Canadian Journal of Earth Sciences 22: 514-524.
  • BLOM H., MARSS T. & MILLER C. G. 2001. - Silurian and earliest Devonian birkeniid anaspids from the Northern Hemisphere. Transactions of the Royal Society of Edinburgh, Earth Sciences 92: 263-323.
  • BRIGGS D. E. G. 2003. - The role of decay and mineralization in the preservation of soft-bodied fossils. Annual Review in Earth and Planetary Sciences 31: 273-301.
  • BRIGGS D. E. G. & KEAR A. J. 1994. - Decay of the lancelet Branchiostoma lanceolatum (Cephalochordata): implication for the interpretation of soft-tissue preservation in conodonts and other primitive chordates. Lethaia 26: 275-287.
  • BRIGGS D. E. G., CLARKSON E. & ALDRIDGE R. J. 1983. - The conodont animal. Lethaia 20: 1-14.
  • BRIGGS D. E. G., MOORE R. A., SHULTZ J. W. & SCH- WEIGERT G. 2005. - Mineralization of soft-part anatomy and invading microbes in the horseshoe crab Mesolimulus from the Upper Jurassic Lagerstatte of Nusplingen, Germany. Proceedings of the Royal Society, London B272: 627-632.
  • CLOUTIER R. & SCHULTZE H.-P. 1996. - Porolepiform fishes (Sarcopterygii), in SCHULTZE H.-P. & CLOUTIER R. (eds), Devonian Fishes and Plants of Miguasha, Quebec, Canada. Verlag Dr. Friedrich Pfeil, Munich: 248-270.
  • COATES M. I. 2003. - The evolution of paired fins. Theory in Biosciences 122: 266-287.
  • COATES M. I. & COHN M. 1998. - Fins, limbs, and tails: outgrowth and axial patterning in vertebrate evolution. BioEssays 20: 371-381.
  • DAMAS H. 1935. - Contribution a l'etude de la metamorphose de la tete de la lamproie. Archives de Biologie 46: 171-227.
  • DAMAS H. 1944. - Recherches sur le developpement de Lampetra fluviatilis L. Contribution a l'etude de la cephalogenese des vertebres. Archives de Biologie 55: 1-284.
  • DENISON R. H. 1967. - Ordovician vertebrates from western United States. Fieldiana: Gelology 16: 269- 288.
  • DONOGHUE P. C. J. & SANSOM I. J. 2002. - Origin and early evolution of vertebrate skeletonization. Microscopy Research and Technique 59: 352-372.
  • DONOGHUE P. C. J. & SMITH M. P. 2001. - The anatomy of Turinia pagei (Powrie) and the phylogenetic status of the Thelodonti. Transactions of the Royal Society of Edinburgh (Earth Sciences) 92: 15-37.
  • DONOGHUE P. C. J., FOREY P. L. & ALDRIDGE R. J. 2000. - Conodont affinity and chordate phylogeny. Biological Reviews 75: 191-251.
  • DONOGHUE P. C. J., SANSOM I. J. & DOWNS J. P. 2006. - Early evolution of vertebrate skeletal tissues and cellular interactions, and the canalization of skeletal development. Journal of Experimental Zoology (Molecular and Developmental Evolution) 306B: 278-294.
  • FOREY P. L. 1984. - Yet more reflections on agnathangnathostome relationships. Journal of Vertebrate Paleontology 4: 330-343.
  • FOREY P. L. & GARDINER B. G. 1981. - J. A. Moy- Thomas and his association with the British Museum (Natural History). Bulletin of the British Museum (Natural History), Geology 35: 131-144.
  • FOREY P. L. & JANVIER P. 1994. - Agnathans and the origin of jawed vertebrates. Nature 361: 129-134.
  • FREEDMAN K. A. 1996. - Jamoytius kerwoodi White: an unimaginative interpretation. 42nd Annual meeting of the Palaeontological Association, Abstracts: 3.
  • FREEDMAN K. A. 1998. - An unimaginative interpretation of Jamoytius kerwoodi White. 58th Annual meeting of the Society of Vertebrate Paleontology, abstract 1100. Journal of Vertebrate Paleontology 18 (supplement to Number 3): 43A.
  • GABBOTT S., ALDRIDGE R. J. & THERON J. 1995. - A giant conodont with preserved muscle tissue from the Upper Ordovician of South Africa. Nature 374: 800-803.
  • GAGNIER P.-Y. 1993a. - Sacabambaspis janvieri, vertebre ordovicien de Bolivie. 1. Analyse morphologique. Annales de Paleontologie 79: 19-69.
  • GAGNIER P.-Y. 1993b. - Sacabambaspis janvieri, vertebre ordovicien de Bolivie. 2. Analyse phylogenetique. Annales de Paleontologie 79: 119-166.
  • GESS R. W., COATES M. I. & RUBIDGE R. S. 2006. - A lamprey from the Devonian period of South Africa. Nature 443: 981-984.
  • GROGAN E. D. & LUND R. 1997. - Soft tissue pigments of the Upper Mississippian chondrenchelyid, Harpagofututor volsellorhinus (Chondrichthyes, Holocephali) from the Bear Gulch limestone, Montana, USA. Journal of Paleontology 71: 337-342.
  • GROGAN E. D. & LUND R. 2002. - The geological and biological environment of the Bear Gulch limestone (Mississippian of Montana, USA) and a model for its deposition. Geodiversitas 24 (2): 295-315.
  • GROSS W. 1938. - Der histologische Aufbau der Anaspiden-Schuppen. Norsk Geologisk Tidskrift 17: 191- 195.
  • GROSS W. 1958. - Anaspiden-Schuppen aus dem Ludlow des Ostseegebiets. Palaontologische Zeischrift 32: 24-37.
  • HANKE G. & WILSON M. V. H. 2006. - Anatomy of the Early Devonian acanthodian Brochoadmones milesi based on nearly complete body fossils, with comments on the evolution and development of paired fins. Journal of Vertebrate Palaeontology 36: 526-537.
  • HEINTZ A. 1958. - The head of the anaspid Birkenia elegans Traq., in WESTOLL T. S. (ed.), Studies on Fossil Vertebrates. The Athlone Press, London: 71-85.
  • HEINTZ A. 1967. - Some remarks about the structure of the tail in cephalaspids, in LEHMAN J. P. (ed.), Evolution des vertebres. Colloques internationaux du Centre national de la Recherche scientifique, 163. CNRS, Paris: 21-36.
  • HOLMGREN N. 1946. - On two embryos of Myxine glutinosa. Acta Zoologica, Stockholm 27: 1-90.
  • HOLMGREN N. & STENSIO E. A. 1936. - Kranium und Visceralskelett des Akranier, Cyclostomen und Fische, in BOLK L., GOPPERT E., KALLIUS E. & LUBOSCH W. (eds), Handbuch der vergleichenden Anatomie der Wirbeltiere, Vol. 4. Urban & Schwartzenberg, Berlin; Vienna: 233-500.
  • HOU X. G., ALDRIDGE R. J., SIVETER D. J., SIVETER D. J. & FENG X. H. 2002. - New evidence on the anatomy and phylogeny of the earliest vertebrates. Proceedings of the Royal Society of London B269: 1865-1869.
  • JAEKEL O. 1911. - Die Wirbeltiere. Eine Ubersicht uber die fossilen und lebenden Formen. Borntraeger, Berlin, 252 p.
  • JANVIER P. 1977. - Contribution a la connaissance de la systematique et de l'anatomie du genre Boreaspis Stensio (Agnatha, Cephalaspidomorphi, Osteostraci) du Devonien inferieur du Spitsberg. Annales de Paleontologie 63: 1-32.
  • JANVIER P. 1981a. - The phylogeny of the Craniata, with particular reference to the significance of fossil "agnathans". Journal of Vertebrate Paleontology 1: 121-159.
  • JANVIER P. 1981b. - Norselaspis glacialis n.g., n.sp. et les relations phylogenetiques entre les kiaeraspidiens (Osteostraci) du Devonien inferieur du Spitsberg. Palaeovertebrata 11: 19-131, pls 1-3.
  • JANVIER P. 1996a. - Anaspida, in SCHULTZE H.-P. & CLOUTIER R. (eds), Devonian Fishes and Plants of Miguasha, Quebec, Canada. Verlag Dr. Friedrich Pfeil, Munich: 134-140.
  • JANVIER P. 1996b. -The dawn of the vertebrates: characters versus common ascent in the rise of current vertebrate phylogenies. Palaeontology 39: 259-287.
  • JANVIER P. 1996c. - Early Vertebrates. Oxford University Press, Oxford, xiii + 408 p.
  • JANVIER P. 1998. - Les vertebres avant le Silurien. Geobios 30: 931-950.
  • JANVIER P. 2003. - Vertebrate characters and Cambrian vertebrates. Comptes Rendus Palevol 2: 523-531.
  • JANVIER P. 2004. - Early specializations of the branchial apparatus in jawless vertebrates: a consideration of gill number and size, in ARRATIA G., CLOUTIER R. & WILSON M. V. H. (eds), Recent Advances in the Origin and Early Radiation of Vertebrates. Verlag Dr. Friedrich Pfeil, Munich: 439-454.
  • JANVIER P. & ARSENAULT M. 1996. - Osteostraci, in SCHULTZE H.-P. & CLOUTIER R. (eds), Devonian Fishes and Plants of Miguasha, Quebec, Canada. Verlag Dr. Friedrich Pfeil, Munich: 123-133.
  • JANVIER P. & ARSENAULT M. 2002. - Calcification of early vertebrate cartilage. Nature 417: 609.
  • JANVIER P. & BUSCH R. 1984. - Jamoytius -like vertebrates from the Lower Devonian Manlius Formation of New York State. Journal of Vertebrate Paleontology 4: 501-506.
  • JANVIER P. & LUND R. 1983. - Hardistiella montanensis n. gen. et sp. (Petromyzontida) from the Lower Carboniferous of Montana, with remarks on the affinities of the lampreys. Journal of Vertebrate Paleontology 2: 407-413.
  • JANVIER P., ARSENAULT M. & DESBIENS S. 2004. - Calcified cartilage in the paired fins of the osteostracan Escuminaspis laticeps (Traquair 1880), from the Late Devonian of Miguasha (Quebec, Canada), with a consideration of the early evolution of the pectoral fin endoskeleton in vertebrates. Journal of Vertebrate Paleontology 24: 773-779.
  • JANVIER P., DESBIENS S., WILLETT J. A. & ARSENAULT M. 2006. - Lamprey-like gills in a gnathostomerelated Devonian jawless vertebrate. Nature 440: 1183-1185.
  • JARVIK E. 1980. - Basic Structure and Evolution of Vertebrates, Volume 1. Academic Press, London, xvi + 575 p.
  • JEFFERIES R. P. S. 1986. - The Ancestry of the Vertebrates. British Museum (Natural History), London, 376 p.
  • JOHNELS A. 1944. - On the cartilage and mucocartilage of the Petromyzon larva. Acta Zoologica, Stockholm 25: 67-73.
  • JOHNELS A. 1948. - On the development and morphology of the skeleton of the head of Petromyzon. Acta Zoologica, Stockholm 29: 140-279.
  • KIAER J. 1924. - The Downtonian fauna of Norway. 1. Anaspida. Videnskapsselskapets Skrifter. 1. Matematiske-Naturvidenskapslige Klasse 6: 1-139.
  • KREMER B. 2005. - Mazuelloids: product of post-mortem phosphatization of acanthomorphic acritarchs. Palaios 20: 27-36
  • LANGILLE R. M. & HALL B. K. 1993. - Calcification of cartilage from the lamprey Petromyzon marinus (L.) in vitro. Acta Zoologica, Stockholm 74: 31-41.
  • LIU Y. H. 1975. - [Lower Devonian agnathans of Yunnan and Sichuan]. Vertebrata PalAsiatica 13: 215-223 (in Chinese with English summary).
  • MAISEY J. G. 1986. - Heads and tails: a chordate phylogeny. Cladistics 2: 201-256.
  • MAISEY J. G. 1989. - Visceral skeleton and musculature of a Late Devonian shark. Journal of Vertebrate Paleontology 9: 174-190.
  • MALLATT J. 1984. - Feeding ecology of the earliest vertebrates. Zoological Journal of the Linnean Society 82: 261-272.
  • MALLATT J. 1996. - Ventilation and the origin of jawed vertebrates: a new mouth. Zoological Journal of the Linnean Society 117: 329-404.
  • MALLATT J. & CHEN J. Y. 2003. - Fossil sister-group of craniates: predicted and found. Journal of Morphology 258: 1-31.
  • MARINELLI W. & STRENGER A. 1954. - Lampetra fluviatilis L., in Vergleichende Anatomie und Morphologie der Wirbeltiere. Franz Deuticke, Wien: 1-80.
  • MARINELLI W. & STRENGER A. 1956. - Myxine glutinosa L., in Vergleichende Anatomie und Morphologie der Wirbeltiere. Franz Deuticke, Wien: 81-172.
  • MARSS T. 1986a. - [Silurian vertebrates of Estonia and West Latvia]. Fossilia Baltica, Valgus, Tallinn 1: 1-104 (in Russian with English summary).
  • MARSS T. 1986b. - Squamation of the thelodont agnathan Phlebolepis. Journal of Vertebrate Paleontology 6: 1-11.
  • MARSS T. & RITCHIE A. 1998. - Silurian thelodonts (Agnatha) of Scotland. Transaction of the Royal Society of Edinburgh 88: 143-195.
  • MARTILL D. M. 1990. - Macromolecular resolution of fossilized muscle tissue from an elopomorph fish. Nature 346: 171-172.
  • MARTILL D. M. & WILBY P. R. 1994. - Lithified prokariotes associated with fossil soft tissues from the Santana Formation (Cretaceous) of Brazil. Kaupia 4: 71-77.
  • MARTINI F. H., HEISSER J. B. & LESSER M. P. 1997. - A population profile for hagfish, Myxine glutinosa L., in the Gulf of Maine: I. Morphometrics and reproductive state. Fishery Bulletin 95: 311-330.
  • MCBURNEY K. M. & WRIGHT G. M. 1996. - Chondrogenesis of a non-collagen-based cartilage in the sea lamprey, Petromyzon marinus. Canadian Journal of Zoology 74: 2118-2130.
  • MOY- THOMAS J. A. & MILES R. S. 1971. - Palaeozoic Fishes. 2nd edition, extensively revised by R. S. Miles. Chapman and Hall, London, xi + 259 p.
  • NEWMAN M. 2002. - A new naked jawless vertebrate from the Middle Devonian of Scotland. Palaeontology 45: 933-941.
  • NEWMAN M. & TREWIN N. 2001. - A new jawless vertebrate from the Middle Devonian of Scotland. Palaeontology 44: 43-51.
  • ORVIG T. 1951. - Histologic studies of placoderms and fossil elasmobranchs. 1: The endoskeleton, with remarks on the hard tissues of lower vertebrates in general. Arkiv for Zoologi 2: 321-454.
  • ORVIG T. 1967. - Phylogeny of tooth tissues: evolution of some calcified tissues in early vertebrates, in MILES A. E. W. (ed.), Structural and Chemical Organization of Teeth, Vol. 1. Academic Press, New York: 45-110.
  • ORVIG T. 1968. - The dermal skeleton; general considerations, in ORVIG T. (ed.), Current Problems of Lower Vertebrate Phylogeny. Almqvist & Wiksell, Stockholm: 373-397.
  • PAN J. & CHEN L. Z. 1993. - [Geraspididae, a new family of Polybranchiaspidida (Agnatha) from Silurian of Northern Anhui]. Vertebrata PalAsiatica 31: 225- 230 (in Chinese with English summary).
  • PARENT N. & CLOUTIER R. 1996. - Distribution and preservation of fossils in the Escuminac Formation, in SCHULTZE H.-P. & CLOUTIER R. (eds), Devonian Fishes and Plants of Miguasha, Quebec, Canada. Verlag Dr. Friedrich Pfeil, Munich: 54-78.
  • PARRINGTON F.R. 1958. - On the nature of the Anaspida, in WESTOLL T. S. (ed.), Studies on Fossil Vertebrates. The Athlone Press, London: 108-128.
  • PERNKOPF E. & LEHNER J. 1937. - Vorderdarm, in BOLK L., GOPPERT E., KALLIUS E. & LUBOSCH W. (eds), Handbuch der vergleichenden Anatomie des Wirbeltiere. Urban & Schwarzenberg, Berlin; Vienna: 349-476.
  • PRADEL A., SANSOM I. J., GAGNIER P.-Y., CESPEDES R. & JANVIER P. 2006. - The tail of the Ordovician fish Sacabambaspis. Biology Letters 3: 72-75.
  • PRICHONNET G., DI VERGILIO M. & CHIDIAC Y. 1996. - Stratigraphical, sedimentological and paleontological context of the Escuminac Formation: paleoenvironmental hypotheses, in SCHULTZE H.-P. & CLOUTIER R. (eds), Devonian Fishes and Plants of Miguasha, Quebec, Canada. Verlag Dr. Friedrich Pfeil, Munich: 23-36.
  • PURNELL M. A. & DONOGHUE P. C. J. 1999. - Flattened fossils, physical modelling and the restoration of collapsed skeletons, in SAVAZZI E. (ed.), Functional Morphology of the Invertebrate Skeleton. John Wiley, New York: 91-99.
  • RICHARDSON M. K. & WRIGHT G. M. 2003. - Developmental transformations on a normal series of embryos of the sea lamprey Petromyzon marinus (Linnaeus). Journal of Morphology 257: 348-363.
  • RITCHIE A. 1960. - A new interpretation of Jamoytius kerwoodi White. Nature 188: 647-649.
  • RITCHIE A. 1964. - New light on the morphology of the Norwegian Anaspida. Skrifter utgitt av det Norske Videnskaps-Akademi, 1, Matematisk-Naturvidenskapslige Klasse 14: 1-35, pls 1-4.
  • RITCHIE A. 1968. - New evidence on Jamoytius kerwoodi White, an important ostracoderm from the Silurian of Lanarshire, Scotland. Palaeontology 11: 21-39.
  • RITCHIE A. 1980. - The Silurian anaspid genus Rhyncholepis from Oesel, Estonia, and Ringerike, Norway. American Museum Novitates 2699: 21-36.
  • RITCHIE A. 1984. - Conflicting interpretations of the Silurian agnathan, Jamoytius. Scottish Journal of Geology 20: 249-256.
  • ROBSON P., WRIGHT G. M., YOUSON J. H. & KEELE F. W. 1997. - A family of non-collagen-based cartilages in the skeleton of the sea lamprey, Petromyzon marinus. Comparative Biochemistry and Physiology 118B: 71-78.
  • SHU D. G., CONWAY MORRIS S., HAN J., ZHANG Z. F., YASUI K., JANVIER P., CHEN L., ZHANG X.-L., LIU J. N., LI Y. & LIU H. K. 2003. - Head and backbone of the early Cambrian vertebrate Haikouichthys. Nature 421: 526-529.
  • SIMPSON G. G. 1926. - New reconstruction of Lasanius problematicus. Bulletin of the Geological Society of America 37: 397-402.
  • SMITH I. C. 1956. - A note on the axial skeleton of the anaspid Pharyngolepis sp. Arkiv for Zoologi 9: 573-577.
  • STENSIO E. A. 1927. - The Devonian and Downtonian vertebrates of Spitsbergen. 1. Family Cephalaspidae. Skrifter om Svalbard og Nordishavet 12: 1-391.
  • STENSIO E. A. 1939. - A new anaspid from the Upper Devonian of Scaumenac Bay in Canada, with remarks on the other anaspids. Kungliga Svenska Vetenskaps- Akademiens Handlingar 18: 1-25.
  • STENSIO E. A. 1958. - Les cyclostomes fossiles ou ostracodermes, in GRASSE P. P. (ed.), Traite de Zoologie, vol. 13, Agnathes et Poissons. Masson, Paris: 173-423.
  • STENSIO E. A. 1964. - Les cyclostomes fossiles ou ostracodermes, in PIVETEAU J. (ed.), Traite de Paleontologie, vol. 4 (1). Masson, Paris: 96-382.
  • STENSIO E. A. 1968. - The cyclostomes with special reference to the diphyletic origin of the Petromyzontida and the Myxinoidea, in ORVIG T. (ed.), Current Problems in Lower Vertebrate Phylogeny. Almqvist and Wiksell, Stockholm: 13-71.
  • STETSON E. A. 1928. - A restoration of the anaspid Birkenia elegans Traquair. Journal of Geology 34: 458- 470.
  • TABIN C. J. & LAUFER E. 1993. - Hox genes and serial homology. Nature 361: 692-693.
  • TRAQUAIR R. H. 1899. - Report of fossil fishes collected by the Geological Survey of Scotland in the Silurian rocks of the South of Scotland. Transactions of the Royal Society of Edinburgh 39: 827-864.
  • TRAQUAIR R. H. 1905. - Supplementary report on fossil fishes collected by the Geological Survey of Scotland. Transactions of the Royal Society of Edinburgh 40: 879-888.
  • TURNER S. 1991. - Monophyly and interrelationships of the Thelodonti, in CHANG M. M., LIU Y. H. & ZHANG G. R. (eds), Early Vertebrates and Related Problems of Evolutionary Biology. Science Press, Beijing: 87-119.
  • VAN DER BRUGGHEN W. 2005. - Enige bijzondere kaaklose vissen (Agnatha) uit het Onder-Siluur van Lanakshire (Scotland). Grondbor & Hamer 2: 24-28.
  • VLADIKOV V. D. 1973. - A female sea lamprey (Petromyzon marinus) with a true anal fin, and the question of the presence of an anal fin in the Petromyzontidae. Canadian Journal of Zoology 51: 221-224.
  • WANG N. Z., DONOGHUE P. C. J., SMITH M. M. & SANSOM I. J. 2005. - Histology of the galeaspid dermoskeleton and endoskeleton, and the origin and early evolution of the vertebrate cranial endoskeleton. Journal of Vertebrate Paleontology 25 (4): 745-756.
  • WATSON D. M. S. 1954. - A consideration of ostracoderms. Philosophical Transactions of the Royal Society, London B238: 1-25.
  • WHITE E. I. 1946. - Jamoytius kerwoodi, a new chordate from the Silurian of Lanarkshire. Geological Magazine 83: 89-97.
  • WILSON M. V. H. & CALDWELL M. W. 1998. - The Furcacaudiformes: a new order of jawless vertebrates with thelodont scales, based on articulated Silurian and Devonian fossils from northern Canada. Journal of Vertebrate Paleontology 18: 10-29.
  • WILSON M. V. H., HANKE G. F. & MARSS T. in press. - Paired fins of jawless vertebrates and their homologies across the agnathan-gnathostome transitions, in SUES H.-D. & ANDERSON J. (eds), EvolutionaryTransitions. Indiana University Press, Bloomington.
  • WOODWARD A. S. 1900. - On a new ostracoderm fish (Euphanerops longaevus) from the Upper Devonian of Scaumenac Bay, Quebec, Canada. Magazine of Natural History ser. 7, 5: 416-419.
  • WOODWARD A. S. 1902. - Fishes, in ZITTEL K. A. VON (ed.), Text-book of Palaeontology, Volume 2. MacMillan, London: 50-55.
  • ZHANG Y.-G. & HOU X.-G. 2004. - Evidence for a single median fin-fold in tail in the Lower cambrian vertebrate, Haikouichthys ercaicunensis. Journal of Evolutionary Biology 17: 1162-1166.