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  • Currently known as: Earth and Environmental Science Transactions of The Royal Society of Edinburgh Title history
    Transactions of the Royal Society of Edinburgh: Earth Sciences, Volume 87, Issue 3
  • January 1996, pp. 363-421

The Devonian tetrapod Acanthostega gunnari Jarvik: postcranial anatomy, basal tetrapod interrelationships and patterns of skeletal evolution

  • M. I. Coates (a1)
  • DOI:
  • Published online: 01 November 2011

The postcranial skeleton of Acanthostega gunnari from the Famennian of East Greenland displays a unique, transitional, mixture of features conventionally associated with fishand tetrapod-like morphologies. The rhachitomous vertebral column has a primitive, barely differentiated atlas-axis complex, encloses an unconstricted notochordal canal, and the weakly ossified neural arches have poorly developed zygapophyses. More derived axial skeletal features include caudal vertebral proliferation and, transiently, neural radials supporting unbranched and unsegmented lepidotrichia. Sacral and post-sacral ribs reiterate uncinate cervical and anterior thoracic rib morphologies: a simple distal flange supplies a broad surface for iliac attachment. The octodactylous forelimb and hindlimb each articulate with an unsutured, foraminate endoskeletal girdle. A broad-bladed femoral shaft with extreme anterior torsion and associated flattened epipodials indicates a paddle-like hindlimb function. Phylogenetic analysis places Acanthostega as the sister-group of Ichthyostega plus all more advanced tetrapods. Tulerpeton appears to be a basal stemamniote plesion, tying the amphibian-amniote split to the uppermost Devonian. Caerorhachis may represent a more derived stem-amniote plesion. Postcranial evolutionary trends spanning the taxa traditionally associated with the fish-tetrapod transition are discussed in detail. Comparison between axial skeletons of primitive tetrapods suggests that plesiomorphic fish-like morphologies were re-patterned in a cranio-caudal direction with the emergence of tetrapod vertebral regionalisation. The evolution of digited limbs lags behind the initial enlargement of endoskeletal girdles, whereas digit evolution precedes the elaboration of complex carpal and tarsal articulations. Pentadactylous limbs appear to have stabilised independently in amniote and amphibian lineages; the colosteid Greererpeton has a pentadactylous manus, indicating that basal amphibian forelimbs may not be restricted to patterns of four digits or less.

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This list contains references from the content that can be linked to their source. For a full set of references and notes please see the PDF or HTML where available.

P. E. Ahlberg 1991. Tetrapod or near-tetrapod fossils from the Upper Devonian of Scotland. NATURE 354, 298301.

P. E. Ahlberg 1995. Elginerpeton pancheni and the earliest tetrapod clade. NATURE 373, 421–4.

P. E. Ahlberg & A. R. Milner 1994. The origin and early diversification of tetrapods. NATURE 368, 507–14.

P. Altangerel , M. A. Norell , L. M. Chiappe & J. M. Clarke 1993. Flightless bird from the Cretaceous of Mongolia. NATURE 362, 623–6; correction 363, 188.

M. A. Ashley-Ross 1992. The comparative myology of the thigh and crus in the salamanders Ambystoma tigrinum and Dicamptodon tenebrosus. J MORPHOL 211, 147–63.

S. E. Bendix-Almgreen , J. A. Clack & H. Olsen 1990. Upper Devonian tetrapod palaeoecology in the light of new discoveries in East Greenland. TERRA NOVA 2, 131–7.

M. J. Blanco & P. Alberch 1992. Caenogenesis, developmental variability, and evolution in the carpus and tarsus of the marbled newt Triturus marmoratus. EVOLUTION 46, 677–87.

E. L. Brainerd , J. S. Ditelberg & D. M. Bramble 1993. Lung ventilation in salamanders and the evolution of vertebrate air-breathing mechanisms. BIOL J LINN SOC 49, 163–83.

K. S. W. Campbell & M. W. Bell 1977. A primitive amphibian from the late Devonian of New South Wales. ALCHERINGA 1, 369–81.

R. L. Carroll 1969. Problems of the origin of reptiles. BIOL REVS 44, 393432.

J. A. Clack 1989. Discovery of the earliest tetrapod stapes. NATURE 342, 425–30.

J. A. Clack 1993. Homologies in the fossil record: the middle ear as a test case. ACTA BIOTHEORETICA 41, 391410.

J. A. Clack 1994b. The earliest known tetrapod braincase and the evolution of the stapes and fenestra ovalis. NATURE 369, 392–4.

M. I. Coates 1991. New palaeontological contributions to limb ontogeny and phylogeny. InJ. R. Hinchliffe , J. M. Hurle & D. Summerbell (eds) Developmental patterning of the vertebrate limb, 325–37. New York: Plenum.

M. I. Coates 1993. Ancestors and homology. The origin of the tetrapod limb. ACTA BIOTHEORETICA 41, 411–24.

M. I. Coates 1995. Fish fins or tetrapod limbs—a simple twist of fate? CURR BIOL 5, 844–8.

M. I. Coates & J. A. Clack 1990. Polydactyly in the earliest known tetrapod limbs. NATURE 347, 66–9.

M. I. Coates & J. A. Clack 1991. Fish-like gills and breathing in the earliest known tetrapod. NATURE 352, 234–6.

J. Cook 1990. Proper names for early fingers. NATURE 347, 1415.

E. B. Daeschler , N. H. Shubin , K. S. Thomson & W. W. Amaral 1994. A Devonian tetrapod from North America. SCIENCE 265, 639–42.

E. B. Daeschler & N. Shubin 1995. Tetrapod origins. PALEOBIOLOGY 21, 404–9.

J. L. Edwards 1989. Two perspectives on the evolution of the-tetrapod limb. AM ZOOL 29, 235–54.

J. S. Farris 1969. A successive approximation approach to character weighting. SYST ZOOL 18, 374–85.

J. A. Gauthier , A. G. Kluge & T. Rowe 1988. Amniote phylogeny and the importance of fossils. CLADISTICS 4, 105209.

S. J. Godfrey , A. R. Fiorillo & R. L. Carroll 1987. A newly discovered skull of the temnospondyl amphibian Dendrerpeton acadianum Owen. CAN J EARTH SCI 24, 796805.

S. J. Godfrey & R. R. Reisz 1991. The vertebral morphology of Gephyrostegus bohemicus Jaekel 1902, with comments on the atlas-axis complex in primitive tetrapods. HISTORICAL BIOL 5, 2736.

E. S. Goodrich 1930. Studies on the structure and development of vertebrates. London: Macmillan & Co.

W. A. Haswell 1882. On the structure of the paired fins of Ceratodus, with remarks on the general theory of the vertebrate limb. PROC LINN SOC NEW SOUTH WALES 7, 211.

M. Laurin & R. R. Reisz 1995. A reevaluation of early amniote phylogeny. ZOOL J LINN SOC 113, 165223.

G. Leonardi 1983. Notopus petri nov. gen., nov. sp.: Une empreinte d'amphibien de Devonian au Parana (Brésil). GEOBIOS 16, 233–9.

J. Lewis & P. Martin 1989. Limbs: a pattern emerges. NATURE 342, 734–5.

R. E. Lombard & S. S. Sumida 1992. Recent progress in understanding early tetrapods. AM ZOOL 32, 609–22.

J. A. Long 1989. A new rhizodontiform fish from the early Carboniferous of Victoria, Australia, with remarks on the phylogenetic position of the group. J VERT PALEONTOL 9, 117.

J. A. Long 1990. Heterochrony and the origin of tetrapods. LETHAIA 23, 157–66.

K. J. McNamara 1986. A guide to the nomenclature of heterochrony. J PALEONTOL 60, 413.

A. L. Panchen 1966. The axial skeleton of the labyrinthodont Eogyrinus attheyi. J ZOOL LONDON 150, 199220.

A. L. Panchen 1988. In search of earliest tetrapods. NATURE 333, 704.

C. Patterson 1993a. Bird or dinosaur? NATURE 365, 21–2.

C. Patterson 1993b. Naming names. NATURE 366, 518.

J. W. Pendleton , B. K. Nagai , M. T. Murtha & F. H. Ruddle 1993. Expansion of the Hox gene family and the evolution of chordates. P N A S 90, 6300–4.

K. de Quieroz & J. Gauthier 1992. Phylogenetic taxonomy. ANN REV ECOL SYST 23, 449–80.

S. M. Reilly & G. V. Lauder 1990. The evolution of tetrapod feeding behaviour: kinematic homologies in prey transport. EVOLUTION 44, 1542–57.

D. Rogers 1990. Probable tetrapod tracks rediscovered in the Devonian of North Scotland. J GEOL SOC LONDON 147, 746–8.

F. H. Ruddle , J. L. Bartels , K. L. Bentley , C. Kappen , M. T. Murtha & J. W. Pendleton 1994. Evolution of Hox genes. ANN REV GEN 28, 423–42.

M. D. J. Sayer & J. Davenport 1991. Amphibious fish: why do they leave the water? REV FISH BIOL FISHERIES 1, 159–81.

H.-P. Schultze 1994. Comparison of hypotheses on the relationships of sarcopterygians. SYST BIOL 43, 155–73.

W. A. Shear 1991. The early development of terrestrial ecosystems. NATURE 351, 283–9.

A. B. Smith 1994. Systematics and the fossil record: documenting evolutionary patterns. London: Blackwell Scientific Publications.

T. R. Smithson 1982. The cranial morphology and relationships of Greererpeton burkemorani Romer (Amphibia: Temnospondyli). ZOOL J LINN SOC 76, 2990.

T. R. Smithson 1985. The morphology and relationships of the Carboniferous amphibian Eoherpeton watsoni Panchen. ZOOL J LINN SOC 85, 317410.

T. R. Smithson & K. S. W. Thomson 1982. The hyomandibular of Eusthenopteron foordi Whiteaves (Pisces: Crossopterygii) and the early evolution of the tetrapod stapes. ZOOL J LINN SOC 74, 93103.

P. Sordino , F. van der Hoeven & D. Duboule 1995. Hox gene expression in teleost fins and the origin of vertebrate digits. NATURE 375, 678–81.

I. Stossel 1995. The discovery of a new Devonian tetrapod trackway in SW Ireland. J GEOL SOC LONDON 152, 407–13.

S. Symmons 1979. Notochordal and elastic components of the axial skeleton of fishes and their functions in locomotion. J ZOOL LONDON 189, 157206.

P. Thorogood 1991. The development of the Teleost fin and implications for our understanding of tetrapod limb evolution. InJ. R. Hinchliffe , J. M. Hurle & D. Summerbell (eds) Developmental patterning of the vertebrate limb, 347–54. New York: Plenum.

C. Tickle 1995. Vertebrate limb development. CURR OPIN GEN DEV 5, 478–84.

C. Tickle & G. Eichele 1994. Vertebrate limb development. ANN REV CELL BIOL 10, 121–52.

G. P. Wagner 1989. The origin of morphological characters and the biological basis of homology. EVOLUTION 43, 1157–71.

A. A. Warren , R. Jupp & B. R. Bolton 1986. Earliest tetrapod trackway. ALCHERINGA 10, 183–6.

J. W. Warren & N. A. Wakefield 1972. Trackways of tetrapod vertebrates from the Upper Devonian of Victoria, Australia. NATURE 238, 469–70.

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Earth and Environmental Science Transactions of The Royal Society of Edinburgh
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