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IX.—The Postcranial Skeleton of Ensthenopteron foordi Whiteaves*

Published online by Cambridge University Press:  06 July 2012

S. Mahala Andrews  and
T. Stanley Westoll
S. Mahala Andrews
Affiliation:
Royal Scottish Museum, Edinburgh
T. Stanley Westoll
Affiliation:
Department of Geology, University of Newcastle upon Tyne.
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Synopsis

Well preserved material of the crossopterygian fish Eusthenopteron enables fresh reconstructions and interpretations of its postcranial skeleton to be given. Comparisons throughout with other bony fishes show that it may be primitive in many features. Similarities with early amphibians such as the screw-shaped glenoid, the form of the humerus (on which an attempt to restore the pectoral musculature is based), the dorsal bicipital ribs and the possibility of a sacral attachment, throw much light on the origin of the tetrapod postcranial skeleton, particularly of the cheiropterygium. A functional analysis of the skeleton of Ensthenopteron is attempted, suggesting that it resembled the pike (Esox) in its mode of life and that it may have been capable of short journeys “walking” overland. The possible selective factors stimulating the evolution of such a fish, and further evolution to the tetrapod stage are discussed.

Type
Research Article
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 68 , Issue 9 , 1970 , pp. 207 - 329
Copyright
Copyright © Royal Society of Edinburgh 1970

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References

References to Literature

Aldinger, H., 1931. “Über einige Besonderheiten im Schädeldach von Eusthenopteron foordi Wh.” Zentbl. Miner. Geol. Paläont., B, 300–305.Google Scholar
Ball, H. W., Dineley, D. L. and White, E. I., 1961. “The Old Red Sandstone of Brown Clee Hill and the Adjacent Area”, Bull. Br. Mus. Nat. Hist. (Geol.), 5, 177–310, pl. 33–8.Google Scholar
Barrell, J., 1916. “Influence of Silurian-Devonian climates on the rise of air-breathing vertebrates”, Bull. Geol. Soc. Am., 27, 387–436.Google Scholar
Bertin, L., 1958. “Modifications des Nageoires”. In Grassé, J-P., Ed., Traite de Zoologie, 13, (I), 748–782. Paris: Masson.Google Scholar
Bertin, L. and Arambourg, C., 1958. “Systématique des Poissons. Super-Ordre des Téléostéens”. In Grassé, J-P., Ed., Traité de Zoologie, 13 (3), 1967–1983 and 2204–2500. Paris: Masson.Google Scholar
Braus, H., 1901. “Die Muskeln und Nerven der Ceratodusflosse”. Denkschr. Med.-Naturw. Ges. Jena, 4, 137–300, pl. XXI–XXIX.Google Scholar
Braus, H., 1906. “Die Entwicklung der Form der Extremitäten und des Extremitätenskelett”. In Hertwig, O., Ed., Handbuch d. vergl. und exp. Entwicklungslehre, 3 (2), 167–338. Jena: Fischer.Google Scholar
Broom, R., 1913. “On the Origin of the Cheiropterygium”, Bull. Am. Mus. Nat. Hist., 32, 459–464.Google Scholar
Bryant, W. L., 1919. “On the Structure of Eusthenopteron”, Bull. Buffalo Soc. Nat. Sci., 13, 1–23, pl. I-XVIII.Google Scholar
Carroll, R. L., 1965. “Lungfish Burrows from the Michigan Coal Basin”, Science, N.Y., 148, 963–964.CrossRefGoogle ScholarPubMed
Dean, B., 1906. “Notes on the Living Specimens of the Australian lungfish, Ceratodus forsteri, in the Zoological Society's collection”, Proc. Zool. Soc. Lond., 1906, 168–178, pl. IX.Google Scholar
Denison, R. H., 1941. “The Soft Anatomy of Bothriolepis”, J. Paleont., 15, 553–561.Google Scholar
Denison, R. H., 1956. “A Review of the Habitat of the Earliest Vertebrates”, Fieldiana: Geol., 11, 357–457.Google Scholar
Dineley, D. L. and Williams, B. P. J., 1968. “Sedimentation and paleoecology of the Devonian Escuminac Formation and related strata, Escuminac Bay, Quebec”, Spec. Pap. Geol. Soc. Am., 129.Google Scholar
Eaton, T. H., 1951. “Origin of Tetrapod Limbs”, Am. Midl. Nat., 46, 245–251.Google Scholar
Eaton, T. H., 1960. “The Aquatic Origin of Tetrapods”, Trans. Kans. Acad. Sci., 63, 115–120.Google Scholar
Eaton, T. H. and Stewart, P. L., 1960. “A New Order of Fish-like Amphibia from the Pennsylvanian of Kansas”, Univ. Kans. Publs Mus. Nat. Hist., 12, 217–240.Google Scholar
Evans, F. G. and Krahl, V. E., 1945. “The Torsion of the Humerus: a phylogenetic survey from fish to man”, Am. J. Anat., 76, 303–337.CrossRefGoogle Scholar
Ewer, D. W., 1955. “Tetrapod Limb”, Science, N.Y., 122, 467–468.Google Scholar
Fell, H., 1939. “The Origin and Developmental Mechanics of the Avian Sternum”, Phil. Trans. Roy. Soc, B, 229, 407–63.Google Scholar
Gegenbaur, C., 1865. Untersuchungen zur vergleichenden Anatomie der Wirbelthiere. II. Schultergürtel der Wirbelthiere. Brustflosse der Fische. Leipzig: Engelmann.Google Scholar
Gero, D. R., 1952. “The Hydrodynamic Aspects of Fish Propulsion”, Am. Mus. Novit., 1601, 1–32.Google Scholar
Goin, C. J. and Goin, O. B., 1956. “Further Comments on the Origin of the Tetrapods”, Evolution, N.Y., 10, 440–441.CrossRefGoogle Scholar
Goodrich, E. S., 1901. “On the Pelvic Girdle and Fin of Eusthenopteron”, Q. Jl Microsc. Sci., 45, 311–324, pl. 16.Google Scholar
Gregory, W. K., 1911. “The Limbs of Eryops and the Origin of Paired Limbs from Fins”, Science, N.Y., 33, 508–509.Google Scholar
Gregory, W. K., 1913. “Crossopterygian Ancestry of the Amphibia”, Science, N.Y., 37, 806–808.Google Scholar
Gregory, W. K., 1915. “Present Status of the Problem of the Origin of the Tetrapoda, with special reference to the skull and paired limbs”, Ann. N.Y. Acad. Sci., 26, 317–383.CrossRefGoogle Scholar
Gregory, W. K., 1935. “Further Observations on the Pectoral Girdle and Fin of Sauripterus taylori Hall, a crossopterygian fish from the Upper Devonian of Pennsylvania, with special reference to the origin of the pentadactylate extremities of Tetrapoda”, Proc. Am. Phil. Soc., 75, 673–690.Google Scholar
Gregory, W. K., 1949. “The Humerus from Fish to Man”, Am. Mus. Novit., 1400, 1–54.Google Scholar
Gregory, W. K., 1951. Evolution Emerging. New York: Macmillan.Google Scholar
Gregory, W. K., Miner, R. W. and Noble, G. K., 1923. “The Carpus of Eryops, and the Structure of the Primitive Chiropterygium”, Bull. Am. Mus. Nat. Hist., 48, 279–288.Google Scholar
Gregory, W. K. and Raven, H. C., 1941. “Studies on the Origin and Early Evolution of Paired Fins and Limbs”, Ann. N.Y. Acad. Sci., 42, 273–360.Google Scholar
Gregory, W. K., Rockwell, H. and Evans, F. G., 1939. “Structure of the Vertebral Column in Eusthenopteron foordi Whiteaves”, J. Paleont., 13, 126–129.Google Scholar
Gross, W., 1954. “Zur Phylogenie der Schultergürtels”, Paläont. Z., 28, 20–40.Google Scholar
Grove, A. S. and Newell, G. E., 1936. “A Mechanical Investigation into the Effectual Action of the Caudal Fin of Some Aquatic Chordates”, Ann. Mag. Nat. Hist., 17, 280–290.Google Scholar
Gunter, G., 1956. “Origin of the Tetrapod Limb”, Science, N. Y., 123, 495–496.CrossRefGoogle ScholarPubMed
Hanson, F. B., 1919. “The Ontogeny and Phylogeny of the Sternum”, Am. J. Anat., 26, 41–115, pl. I–XII.Google Scholar
Harris, J. E., 1936. “The Role of the Fins in the Equilibrium of the Swimming Fish. I. Wind-tunnel Tests on a Model of Mustelus canis Mitchell”, J. Exp. Biol., 13, 476–493.Google Scholar
Harris, J. E., 1937. “The Mechanical Significance of the Position and Movements of the Paired Fins of the Teleostei”, Pap. Tortugas Lab., 31, 171–189.Google Scholar
Harris, J. E., 1938. “The Role of the Fins in the Equilibrium of the Swimming Fish. II. The Role of the Pelvic Fins”, J. Exp. Biol., 15, 32–47.CrossRefGoogle Scholar
Harris, V. A., 1960. “On the Locomotion of the mud-skipper Periophthalmus koelreuteri (Pallas): (Gobiidae)”, Proc. Zool. Soc. Lond., 134, 107–135.Google Scholar
Holmgren, N., 1933. “On the Origin of the Tetrapod Limb”, Acta Zool., Stockh. 14, 185–295.Google Scholar
Holmgren, N., 1939. “Contribution to the Question of the Origin of the Tetrapod Limb”, Acta Zool, Stockh., 20, 89–124.CrossRefGoogle Scholar
Holmgren, N., 1949. “On the Tetrapod Limb Problem—Again”, Acta Zool., Stockh., 30, 485–508.CrossRefGoogle Scholar
Howell, A. B., 1933. “Morphogenesis of the Shoulder Architecture. Part II. Pisces”, Q. Rev. Biol, 8, 434–456.Google Scholar
Howell, A. B., 1935. “Morphogenesis of the Shoulder Architecture. Part III. Amphibia”, Q. Rev. Biol., 10, 397–431.Google Scholar
Howell, A. B., 1938. “Morphogenesis of the Architecture of Hip and Thigh”, J. Morph., 62, 177–218.CrossRefGoogle Scholar
Hussakof, L., 1912. “Notes on Devonic Fishes from Scaumenac Bay, Quebec”, Bull. N.Y. St. Mus., 158, 127–139, pl. I–III.Google Scholar
Inger, R. F., 1957. “Ecological Aspects of the Origins of the Tetrapods”, Evolution, N.Y., 11, 373–376.CrossRefGoogle Scholar
Jarvik, E., 1942. “On the Structure of the Snout of Crossopterygians and Lower Gnathostomes in General”, Zool. Bidr. Upps., 21, 235–675.Google Scholar
Jarvik, E., 1944 a. “The Dermal Bones, Sensory Canals and Pit-lines of the Skull in Eusthenopteron foordi Whiteaves, with some remarks on E. säve-söderberghi Jarvik”, K. Svenska Vetensk-Akad. Handl., 21 (3), 1–48.Google Scholar
Jarvik, E., 1944 b. “On the Exoskeletal Shoulder-girdle of Teleostomian Fishes, with special reference to Eusthenopteron foordi Whiteaves”, K. Svenska Vetensk-Akad. Handl., 21 (7), 1–32.Google Scholar
Jarvik, E., 1948. “On the Morphology and Taxonomy of the Middle Devonian Osteolepid Fishes of Scotland”, K. Svenska Vetensk-Akad. Handl., 25 (1), 1–301, pl. 1–37.Google Scholar
Jarvik, E., 1952. “On the Fish-like Tail in the Ichthyostegid Stegocephalians”, Meddr Grønland, 114 (12), 1–90, pl. 1–21.Google Scholar
Jarvik, E., 1954. “On the Visceral Skeleton in Eusthenopteron with a Discussion of the Parasphenoid and Palatoquadrate in Fishes”, K. Svenska Vetensk-Akad. Handl., 5 (1), pp. 1–104.Google Scholar
Jarvik, E., 1955 a. “The Oldest Tetrapods and Their Forerunners”, Scient. Mon., N.Y., 80, 141–154.Google Scholar
Jarvik, E., 1955 b. “Ichthyostegalia”. In Piveteau, J., Ed., Traité de Paléontologie, 5, 53–66. Paris: Masson.Google Scholar
Jarvik, E., 1959. “Dermal Fin-rays and Holmgren's Principle of Delamination”, K. Svenska Vetensk-Akad. Handl., 6 (1), 1–51, pl. 1–4.Google Scholar
Jarvik, E., 1960. Théories de l'Évolution des Vertébrés, reconsidérées à la lumière des Récentes Découvertes sur les Vertébrés Inférieures. Paris: Masson.Google Scholar
Jarvik, E., 1963. “The Composition of the Intermandibular Division of the Head in Fish and Tetrapods and the Diphyletic Origin of the Tetrapod Tongue”, K. Svenska Vetensk-Akad. Handl., 9 (1), 1–74.Google Scholar
Jarvik, E., 1964. “Specialisations in Early Vertebrates”, Annls Soc. Roy. Zool. Belg., 94, 11–95.Google Scholar
Jarvik, E., 1965 a. “Die Raspelzunge der Cyclostomen und die pentadactyle Extremität der Tetrapoden als Beweise für monophyletische Herkunft”, Zool. Anz., 175, 101–143.Google Scholar
Jarvik, E., 1965 b. “On the Origin of Girdles and Paired Fins”, Israel J. Zool., 14, 141–172.Google Scholar
Jarvik, E., 1966. “Remarks on the Structure of the Snout in Megalichthys and Certain Other Rhipidistid Crossopterygians”, Ark. Zool., 19, 41–98, pl. 1–5.Google Scholar
Johnels, A. G. and Svensson, G. S. O., 1954. “On the Biology of Protopterus annectens Owen”, Ark. Zool., 7, 131–158.Google Scholar
Klaatsch, H., 1896. “Die Brustflosse der Crossopterygier”. In Haeckel, E. H. P. A. et al. Festschrift zum siebenzigsten Geburtstage von C. Gegenbaur, 1, 261–391. Leipzig: Engelmann.Google Scholar
LeDamany, P., 1903. “Les Torsions Osseuses. Leur role dans la transformation des membres”, J. Anat. Physiol, Paris, 39, 126–134, 161–165, 313–337.Google Scholar
Lehman, J.-P., 1947. “Description de quelques Exemplaires de Cheirolepis canadensis (Whiteaves)”, K. Svenska Vetensk-Akad. Handl., 24 (4), 1–40, pl. 1–9.Google Scholar
Manzii, S. F., 1962. “Adaptatziya Chrebetnych do Nazemnogo Peresuvannya”, Pitannia, Evol. Morf., Akad Nauk, URSS, 18, 12–19. (English Translation by N.L.L., No. RTS 3909, “Adaptation of the Vertebrates to Terrestrial Locomotion”.)Google Scholar
Marinelli, W., 1946. “Der Schultergürtel der Wirbeltiere. Funktions analytische Studie”, Öst. Zool. Z., 1, 129–164.Google Scholar
Marshall, N. B., 1965. The Life of Fishes. London.Google Scholar
Martin, C. P., 1933. “Cause of Torsion of the Humerus and of the notch on the anterior edge of the glenoid cavity of the scapula”, J. Anat., 67, 573–582.Google Scholar
Miles, R. S., 1965. “Some Features in the Cranial Morphology of Acanthodians and the Relationships of the Acanthodii”, Acta Zool., Stockh., 46, 233–255.Google Scholar
Millot, J. and Anthony, J., 1958 a. Anatomie de Latimeria chalumnae. Tome I. Squelette, Muscles et Formations de Soutien. Paris: C.N.R.S.Google Scholar
Millot, J., 1958 b. “Crossopterygiens Actuels. Latimeria chalumnae, Dernier des Crossopterygiens”. In Grassé, J.-P., Ed., Traité de Zoologie, 13 (3), 2553–2597. Paris: Masson.Google Scholar
Miner, R. W., 1925. “The Pectoral Limb of Eryops and Other Primitive Tetrapods”, Bull. Am. Mus. Nat. Hist., 51, 145–312.Google Scholar
Nielsen, E., 1942. “Studies on Triassic Fishes from East Greenland. I. Glaucolepis and Boreosomus”, Meddr Grønland, 138, 1–403, pl. 1–30.Google Scholar
Olson, E. C., 1961. “Jaw Mechanisms: Rhipidistians, Amphibians, Reptiles”, Am. Zool., 1, 205–215.Google Scholar
Orton, G. L., 1954. “Original Adaptive Significance of the Tetrapod Limb”, Science, N.Y., 120, 1042–1043.CrossRefGoogle ScholarPubMed
Parrington, F. R., 1967. “The Vertebrae of Early Tetrapods”, Colloques Int. Cent. Natn. Rech. Scient., 163, 269–279.Google Scholar
Patten, W., 1912. The Evolution of Vertebrates and Their Kin. London.Google Scholar
Petronievics, B., 1918. “The Pectoral Fin of Eusthenopteron”, Ann. Mag. Nat. Hist., 2, 471–476.CrossRefGoogle Scholar
Rayner, D. H., 1958. “The Geological Environment of Fossil Fishes”. In Westoll, T. S., Ed., Studies on Fossil Vertebrates, 129–156. London: Athlone Press.Google Scholar
Rayner, D. H., 1963. “The Achanarras Limestone of the Middle Old Red Sandstone, Caithness, Scotland”, Proc. Yorks. Geol. Soc., 34, 117–138, pl. 17–18.CrossRefGoogle Scholar
Romer, A. S., 1922. “The Locomotor Apparatus of Certain Primitive and Mammal-like Reptiles”, Bull. Am. Mus. Nat. Hist., 46, 517–606, pl. XXVII–XLVI.Google Scholar
Romer, A. S., 1924. “Pectoral Limb Musculature and Shoulder-Girdle Structure in Fish and Tetrapods”, Anat. Rec., 27, 119–143.CrossRefGoogle Scholar
Romer, A. S., 1933. “Eurypterid Influence on Vertebrate History”, Science, N.Y., 78, 114–117.Google Scholar
Romer, A. S., 1941. Man and the Vertebrates. (3rd Ed.). University of Chicago Press.Google Scholar
Romer, A. S., 1942. “The Development of the Tetrapod Limb Musculature—The Thigh of Lacerta”, J. Morph., 71, 251–298.Google Scholar
Romer, A. S., 1944. “The Development of the Tetrapod Limb Musculature—The Shoulder Region of Lacerta”, J. Morph., 74, 1–41.CrossRefGoogle Scholar
Romer, A. S., 1945. Vertebrate Paleontology. (2nd Edn.). University of Chicago Press.Google Scholar
Romer, A. S., 1956 a. Osteology of the Reptiles. University of Chicago Press.Google Scholar
Romer, A. S., 1956 b. “The Early Evolution of Land Vertebrates”, Proc. Am. Phil. Soc., 100, 157–167.Google Scholar
Romer, A. S., 1958. “Tetrapod Limbs and Early Tetrapod Life”, Evolution, N.Y., 12, 365–369.Google Scholar
Romer, A. S., 1962. The Vertebrate Body. (3rd Edn). London: Saunders.Google Scholar
Romer, A. S. and Byrne, F., 1931. “The pes of Diadectes: Notes on the Primitive Limb”, Palaeobiologica, 4, 24–48.Google Scholar
Romer, A. S. and Grove, B. H., 1935. “Environment of the Early Vertebrates”, Am. Midi. Nat., 16, 805–856.Google Scholar
Romer, A. S. and Olson, E. C., 1954. “Aestivation in a Permian Lungfish”, Breviora, 30, pp. 1–8.Google Scholar
Romer, A. S. and Price, L. I., 1940. “Review of the Pelycosauria”, Spec. Pap. Geol. Soc. Am., 28, 1–538, pl. 1–46.Google Scholar
Russell, L. S., 1939. “Notes on the Occurrence of Fossil Fishes in the Upper Devonian of Maguasha, Quebec”, Contrib. Roy. Ont. Mus. Palaeont., 2, pp. 1–10, pl. 1.Google Scholar
Säve-Söderbergh, G., 1932. “Preliminary Note on Devonian Stegocephalians from East Greenland”, Meddr Grønland, 94, 1–107, pl. I–XXII.Google Scholar
Schaeffer, B., 1941. “A Revision of Coelacanthus newarki and notes on the Evolution of the Girdles and Basal Plates of the Median Fins in the Coelacanthini”, Am. Mus. Novit., 1110, 1–17.Google Scholar
Schaeffer, B., 1965. “The Rhipidistian—Amphibian Transition”, Am. Zool., 5, 267–275.Google Scholar
Schaeffer, B., 1967. “Osteichthyan Vertebrae”, J. Linn. Soc. (Zool.), 47, 185–195.CrossRefGoogle Scholar
Schaeffer, B. and Rosen, D. E., 1961. “Major Adaptive Levels in the Evolution of the Actinopterygian Feeding Mechanism”, Am. Zool., 1, 187–204.CrossRefGoogle Scholar
Seno, T., 1961. “The Origin and Evolution of the Sternum”, Anat. Anz., 110, 97–101.Google ScholarPubMed
Stensiö, E. A., 1922. “Notes on Certain Crossopterygians”, Proc. Zool. Soc. Lond., 1922, 1241–1271, pl. 1.Google Scholar
Stensiö, E. A., 1925. “Note on the Caudal Fin of Eusthenopteron”, Ark. Zool., 17B, (11) 1–3.Google Scholar
Stensiö, E. A., 1932. “Triassic Fishes from East Greenland”, Meddr Grønland, 83, 1–345, Atlas.Google Scholar
Stensiö, E. A., 1963. “The Brain and the Cranial Nerves in Fossil, Lower Craniate Vertebrates”, Skr. Norske Vidensk-Akad. (Mat.-Nat. K1.), 13, pp. 1–120.Google Scholar
Sternberg, R. M., 1941. “Cranial Morphology of the Devonian Crossopterygian Eusthenopteron”, Univ. Toronto Stud. Geol. Ser., 45, 1–48, pl. I–V.Google Scholar
Tchernavin, V. V., 1953. The Feeding Mechanisms of a Deep Sea Fish. Chauliodus sloani Schneider. London: Br. Mus. Nat. Hist.Google Scholar
Thomson, K. S., 1962. “Rhipidistian Classification in Relation to the Origin of Tetrapods”, Breviora, 117, 1–12.Google Scholar
Thomson, K. S., 1964 a. “The Ancestry of the Tetrapods”, Sci. Prog., Lond., 52, 451–59.Google Scholar
Thomson, K. S., 1964 b. “The Comparative Anatomy of the Snout in Rhipidistian Fishes”, Bull. Mus. Comp. Zool. Harv., 131, 315–357.Google Scholar
Thomson, K. S., 1967. “Mechanisms of Intracranial Kinetics in Fossil rhipidistian fishes (Crossopterygii) and their relatives”, J. Linn. Soc. (Zool.) 46, 223–253.Google Scholar
Thomson, K. S. and Vaughn, P. P., 1968. “Vertebral Structure in Rhipidistia (Osteichthyes, Crossopterygii) with Description of a new Permian Genus”, Postilla, 127, 1–19.Google Scholar
Toombs, H. A., 1948. “The Use of Acetic Acid in the Development of Vertebrate Fossils”, Museums J., 48, 54–55.Google Scholar
Toombs, H. A. and Rixon, A. E., 1959. “The Use of Acids in the Preparation of Vertebrate Fossils”, Curator, 11, 304–312.CrossRefGoogle Scholar
Traquair, R. H., 1889. “On a New Species of Dipterus”, Geol. Mag., 6, 97–99.Google Scholar
Vaughn, P. P., 1964. “Evidence of Aestivating Lungfish from the Sangre de Cristo Formation, Lower Permian of Northern New Mexico”, Contr. Sci., 80, 1–7.CrossRefGoogle Scholar
Vorobjeva, E. I., 1962. “Rizodontnye Kisteperye Ryby Glavnogo Devonskogo Polya S.S.S.R.”, Trudy Paleont. Inst., 94, 1–108, pl. I–XXVIII. (English Translation by N.L.L., No. RTS 3911, “Rhizodont Crossopterygian Fishes from the Main Devonian Area of the U.S.S.R.”).Google Scholar
Von Wahlert, G., 1961. “Über einige Skelett-Formen von Fisch-Flossen und ihre phylogenetische Bedeutung”, Zool. Anz., Suppl., 25, 498–508.Google Scholar
Warburton, F. E. and Denman, N. S., 1961. “Larval Competition and the Origin of Tetrapods”, Evolution, N.Y., 15, 566.CrossRefGoogle Scholar
Watson, D. M. S., 1913. “On the Primitive Tetrapod Limb”, Anat. Anz., 44, 24–27.Google Scholar
Watson, D. M. S., 1917. “The Evolution of the Tetrapod Shoulder Girdle and Forelimb”, J. Anat., 52, 1–63.Google Scholar
Watson, D. M. S., 1921. “On the Coelacanth Fish”, Ann. Mag. Nat. Hist., 8, 320–337.CrossRefGoogle Scholar
Watson, D. M. S., 1926. “The Evolution and Origin of the Amphibia”, Phil. Trans. Roy. Soc, B, 214, 189–257.Google Scholar
Westoll, T. S., 1937. “The Old Red Sandstone Fishes of the North of Scotland, particularly of Orkney and Shetland”, Proc. Geol. Ass., 48, 13–45.CrossRefGoogle Scholar
Westoll, T. S., 1938. “The Ancestry of the Tetrapods”, Nature, Lond., 141, 127.CrossRefGoogle Scholar
Westoll, T. S., 1943 a. “The Origin of the Tetrapods”, Biol. Rev., 18, 78–98.Google Scholar
Westoll, T. S., 1943 b. “The Origin of the Primitive Tetrapod Limb”, Proc. Roy. Soc, B, 131, 373–393.Google Scholar
Westoll, T. S., 1949. “On the Evolution of the Dipnoi”. In Jepsen, G. L., Simpson, G. G. and Mayr, E., Eds., Genetics Palaeontology and Evolution, 121–184, Princeton.Google Scholar
Westoll, T. S., 1958. “The Origin of Continental Vertebrate Faunas”, Trans. Geol. Soc Glasg., 23, 1–27.Google Scholar
Whiteaves, J. F., 1881. “On Some Remarkable Fossil Fishes from the Devonian Rocks of Scaumenac Bay, P.Q. with descriptions of a new Genus and three New Species”, Can. Nat., 10, 27–35.Google Scholar
Whiteaves, J. F., 1888. “Illustrations of the Fossil Fishes of the Devonian Rocks of Canada. Part II”, Trans. Proc. Roy. Soc. Canada, 6, 77–96, pl. V–X.Google Scholar
Williams, B. P. J. and Dineley, D. L., 1966. “Studies on the Devonian Strata of Chaleur Bay, Quebec”, Marit. Sediments, 2, 7–10.Google Scholar
Williams, E. E., 1959. “Gadow's Arcualia and the Development of Tetrapod Vertebrae”, Q. Rev. Biol., 34, 1–32.Google Scholar
Williston, S. W., 1909. “New or Little-known Permian Vertebrates. Trematops, New Genus”, J. Geol., 17, 636–658.Google Scholar
Woodward, A. S., 1893. “Note on a Case of Subdivision of the Median Fin of a Dipnoan Fish”, Ann. Mag. Nat. Hist., 11, 241–242.Google Scholar
Woodward, A. S., 1898. Outlines of Vertebrate Palaeontology for Students of Zoology. Cambridge University Press.Google Scholar