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An Early Devonian lake and its associated biota in the Midland Valley of Scotland

Published online by Cambridge University Press:  03 November 2011

N. H. Trewin  and
R. G. Davidson
N. H. Trewin
Affiliation:
Nigel H. Trewin, Department of Geology and Petroleum Geology, University of Aberdeen, Kings College, Aberdeen AB24 3UE, U.K.
R. G. Davidson
Affiliation:
Rogert G. Davidson, 35 Millside Road, Peterculter, Aberdeen ABU 0WG, U.K.
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Abstract

ABSTRACT

The Tillywhandland fish bed of the Lower Old Red Sandstone in the Strathmore area of the Scottish Midland Valley accumulated in a lake, here called Lake Forfar, which was created suddenly following a period of fluvial deposition. Lake creation may have been due to basin faulting or the disruption of drainage patterns by contemporaneous volcanic activity. The fish bed laminites accumulated in a hydrologically open lake under a seasonal climatic regime. When fully developed, laminites comprise repeated quadruplets of clastic silt/carbonate/organic/green clay–shale laminae averaging 0·5 mm in thickness. Following 2000 years of laminite deposition an increasingly silty succession with thin current-rippled sandstones provided the lake-fill.

The fish fauna is dominated by Mesacanthus and Ischnacanthus with rare Euthacanthus, Parexus, Climatius, Vernicomacanthus and Cephalaspis. Most fish carcasses were partially decayed before deposition in the laminites on the poorly oxygenated lake floor. Abundant coprolites are the result of predation on Mesacanthus and small Ischnacanthus, probably by larger Ischnacanthus. Arthropods present include eurypterids (Pterygotus), washed in as near complete exuviae and fragments, and millipeds which were washed in from surrounding terrestrial environments along with plants, of which Parka and Zosterophyllum are common. Bioturbation indicates that conditions were not permanently anoxic during deposition of the laminites.

Comparison of our collections with the Mitchell Collection accumulated in the 19th century indicates that Tillywhandland Quarry was the main source of specimens in laminite lithologies labelled ‘Turin Hill’.

Keywords

Early DevonianfishacanthodiansarthropodstaphonomylacustrineTillywhandlandMidland ValleyScotland
Type
Research Article
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 86 , Issue 4 , 1995 , pp. 233 - 246
Copyright
Copyright © Royal Society of Edinburgh 1995

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References

Armstrong, M & Paterson, I. B. 1970. The Lower Old Red Sandstone of the Strathmore Region. INST GEOL SCI REP 70/12, 1–23.Google Scholar
Armstrong, M., Donovan, R. N. & Paterson, I. B. 1978. Angus and Kincardine. In Friend, P. F. & Williams, B. P. J. (eds) A field guide to selected outcrop areas of the Devonian of Scotland, the Welsh Borderland and South Wales, 13–22. London: Palaeontological Association.Google Scholar
Campbell, R. 1913. The geology of south-eastern Kincardineshire. TRANS R SOC EDINBURGH 48, 923–60.CrossRefGoogle Scholar
Cleal, C. J. & Thomas, B. A. 1995. Palaeozoic palaeobotany of Great Britain. GEOL CONSERV REV SER 9, 295 pp.Google Scholar
Denison, R. 1979. Acanthodii. In Schlutze, H-P. (ed.) Handbook of paleoichnology, Vol. 5. Stuttgart: Gustav Fischer.Google Scholar
Don, A. W. R. & Hickling, G. 1915. On Parka decipiens. Q J GEOL SOC LONDON 71, 648–65.CrossRefGoogle Scholar
Donovan, R. N. 1980. Lacustrine cycles, fish ecology and stratigraphic zonation in the Middle Devonian of Caithness. SCOTT J GEOL 16, 35–50.CrossRefGoogle Scholar
Duncan, W. I. & Buxton, N. W. K. 1995. New evidence for evaporitic Middle Devonian lacustrine sediments with hydrocarbon source potential on the East Shetland Platform, North Sea. J GEOL SOC LONDON 152, 251–8.CrossRefGoogle Scholar
Edwards, D. 1975. Some observations on the fertile parts of Zosterophyllum myretonianum. Penhallow from the Lower Old Red Sandstone of Scotland. TRANS R SOC EDINBURGH 69, 251–65.CrossRefGoogle Scholar
Elder, R. L. & Smith, G. R. 1988. Fish taphonomy and environmental inference in palaeolimnology. PALAEOGEOGR PALAEOCLIMATOL PALAEOECOL 62, 577–92.CrossRefGoogle Scholar
Francis, E. H., Forsyth, I. H., Read, W. A. & Armstrong, M. 1970. The geology of the Stirling district (sheet 39). MEM GEOL SURV. GB.Google Scholar
Geikie, A. 1897. The ancient volcanoes of Great Britain, 2 vols. MacMillan, London.CrossRefGoogle Scholar
Gilmore, B. 1992. Scroll coprolites from the Silurian of Ireland and the feeding of early vertebrates. PALAEONTOLOGY 35, 319–33.Google Scholar
Hamilton, R. F. M. & Trewin, N. H. 1988. Environmental controls on fish fauna of the Middle Devonian Orcadian Basin. In McMillan, N. J., Embry, A. F. & Glass, D. J. (eds) Devonian of the world. CAN SOC PETROL GEOL MEM 14(V.III), 589–600.Google Scholar
Hemsley, A. R. 1990. Parka decipiens and land plant spore evolution. HIST BIOL 4, 39–50.CrossRefGoogle Scholar
Hickling, G. 1912. On the geology and palaeontology of Forfarshire. PROC GEOL ASSOC 23, 302–11.CrossRefGoogle Scholar
Huber, P. 1992. Faunal distribution, seasonal deposition, and fish taphonomy at the Upper Pennsylvanian (Missourian) Kinney Brick Company Quarry, central New Mexico. NEW MEXICO BUR MINES MIN RES BULL 138, 37–48.Google Scholar
Lang, W. H. 1927. Contributions to the study of the Old Red Sandstone flora of Scotland. VI. On Zosterophyllum myretonianum Penhallow and some other plant remains from the Carmyllie Beds of the Lower Old Red Sandstone. TRANS R SOC EDINBURGH 55, 443–52.CrossRefGoogle Scholar
McGrew, P. O. 1975. Taphonomy of Eocene fish from Fossil Basin, Wyoming. FIELDIANA GEOL 33, 257–70.Google Scholar
Moy-Thomas, J. A. & Miles, R. S. 1971. Palaeozoic fishes. Chapman and Hall, London.CrossRefGoogle Scholar
Mykura, W. 1991. Old Red Sandstone. In Craig, G. Y. (ed.) Geology of Scotland, 3rd edn., 297–346. London: Geological Society. Niklas, K. J. 1976. Morphological and ontogenetic reconstructions of Parka decipiens Fleming and Pachytheca Hooker from the Lower Old Red Sandstone, Scotland. TRANS R SOC EDINBURGH 69, 485–99.Google Scholar
Paton, R. L. 1976. A catalogue of fossil vertebrates in the Royal Scottish Museum, Edinburgh. Part 5 Acanthodii. R SCOTT MUS INF SER GEOL 6, 40pp.Google Scholar
Powrie, J. 1861. On the Old Red Sandstone rocks of Forfarshire. Q J GEOL SOC LONDON 17, 534–42.CrossRefGoogle Scholar
Powrie, J. 1864. On the fossiliferous rocks of Forfarshire and their contents. Q J GEOL SOC LONDON 20, 413–29.CrossRefGoogle Scholar
Rice, C. M., Ashcroft, W. A., Batten, D. J., Boyce, A. J., Caulfield, J. B. D., Fallick, A. E., Hole, M. J., Jones, E., Pearson, M. J., Rogers, G., Saxton, J. M., Stuart, F. M., Trewin, N. H. & Turner, G. 1995. A Devonian auriferous hot spring system, Rhyme, Scotland. J GEOL SOC LONDON 152, 229–50.CrossRefGoogle Scholar
Richards, P. C. 1985. A Lower Old Red Sandstone lake in the offshore Orcadian Basin. SCOTT J GEOL 21, 381–3.CrossRefGoogle Scholar
Richardson, J. B., Ford, J. H. & Parker, F. 1984. Miospores, correlation and age of some Scottish Lower Old Red Sandstone sediments from the and Angus). J MICROPALAEONTOL 3, 109–24.CrossRefGoogle Scholar
Selden, P. A. 1984. Autecology of Silurian eurypterids. SPEC PAP PALAEONTOL 32, 39–54.Google Scholar
Trench, A. & Haughton, P. D. W. 1990. Palaeomagnetic and geochemical evaluation of a terrane-linking ignimbrite: evidence for the relative position of the Grampian and Midland Valley terranes in late Silurian time. GEOL MAG 127, 241–57.CrossRefGoogle Scholar
Trewin, N. H. 1986. Palaeoecology and sedimentology of the Achanarras fish bed of the Middle Old Red Sandstone, Scotland. TRANS R SOC EDINBURGH EARTH SCI 77, 21–46.CrossRefGoogle Scholar
Trewin, N. H. 1987. Devonian of St Cyrus and Milton Ness. In Trewin, N. H., Kneller, B. C. & Gillen, C. (eds) Excursion guide to the geology of the Aberdeen area, 251–8. Edinburgh: Scottish Academic Press.Google Scholar
Trewin, N. H. 1994. A draft system for the identification and description of arthropod trackways. PALAEONTOLOGY 37, 811–23.Google Scholar
Trewin, N. H. & Rice, C. M. 1992. Stratigraphy and sedimentology of the Devonian Rhynie chert locality. SCOTT J GEOL 28, 37–47.CrossRefGoogle Scholar
Walker, E. F. 1985. Arthropod ichnofauna of the Old Red Sandstone at Dunure and Montrose, Scotland. TRANS R SOC EDINBURGH EARTH SCI 76, 287–97.Google Scholar
Watson, D. M. S. 1937. The acanthodian fishes. PHIL TRANS R SOC LONDON B 228, 49–146.Google Scholar
Westoll, T. S. 1977. Northern Britain. In House, M. R., Richardson, J. B., Chaloner, W. G., Allen, J. R. L., Holland, C. H. & Westoll, T. S. (eds) A correlation of the Devonian rocks in the British Isles. GEOL SOC LONDON SPEC REP 8, 66–93.Google Scholar
Yuretich, R. F. 1979. Modern sediments and sedimentary processes in Lake Rudolf (Lake Turkana) eastern Rift Valley, Kenya. SEDIMENTOLOGY 26, 313–31.CrossRefGoogle Scholar