Hostname: page-component-586b7cd67f-t7czq Total loading time: 0 Render date: 2024-11-24T08:53:38.306Z Has data issue: false hasContentIssue false
  • English
  • Français

Trilobites from the Ordovician Ardwell Group of the Craighead Inlier, Girvan district, Scotland

Published online by Cambridge University Press:  03 November 2011

R. P. Tripp
R. P. Tripp
Affiliation:
R. P. Tripp, British Museum (Natural History), Cromwell Road, London SW7 5BD, England.
Get access Rights & Permissions [Opens in a new window]

Abstract

All trilobites known from the Ardwell Group, Craighead Inlier, Girvan district are listed and frequencies recorded. Encrinuroides lapworthi n. sp. from the Sericoidea Mudstones, and Bumastoides fornax n. sp. from the Kiln Mudstones, are described. The Sericoidea Mudstones constitute a deeper water interlude in the complex succession which comprises the Craighead Limestone Formation; graptolites from this horizon indicate low Dicranograptus clingani zone. The closest resemblance of the trilobite assemblage as a whole is to faunas of Trenton age in North America. The occurrence of forms allied to Boda Limestone (Ashgill) species suggests that these are long-ranging, carbonate associated, trilobite stocks.

Keywords

cranidiumfree cheekrostral platehypostomethoracic segmentpygidiummuscle scargraptoliteNorth American fauna.
Type
Research Article
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 71 , Issue 3 , 1980 , pp. 147 - 157
Copyright
Copyright © Royal Society of Edinburgh 1980

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Anderson, F. W. & Pringle, J. 1946. On a section of the Balclatchie Beds at Craighead Quarry, near Girvan, Ayrshire. GEOL MAG 83, 172–6.CrossRefGoogle Scholar
Bradley, J. H. 1930. Fauna of the Kimmswick limestone of Missouri and Illinois. CONTRIB WALKER MUS 2, 219–90.Google Scholar
Bulman, O. M. B. 1933. On the graptolites prepared by Holm, VI. ARK ZOOL 26A, 1–52.Google Scholar
Chatterton, B. D. E. & Ludvigsen, R. 1976. Silicified Middle Ordovician Trilobites from the South Nahanni River Area, District of Mackenzie, Canada. PALAEONTOGRAPHICA A, 154, 1–106.Google Scholar
Dean, W. T. 1971. The trilobites of the Chair of Kildare Limestone (Upper Ordovician) of eastern Ireland. PALAEONTOGR SOC MONOGR 125, 1–90.CrossRefGoogle Scholar
Dean, W. T. 1974. The trilobites of the Chair of Kildare Limestone (Upper Ordovician) of eastern Ireland. PALAEONTOGR SOC MONOGR 128, 61–98.CrossRefGoogle Scholar
Evitt, W. R. & Tripp, R. P. 1977. Silicified Middle Ordovician Trilobites from the families Encrinuridae and Staurocephalidae. PALAEONTOGRAPHICA A, 157, 109–174.Google Scholar
Ingham, J. K. 1968. British and Swedish Ordovician species of Cybeloides (Trilobita). SCOTT J GEOL 4, 300–16.CrossRefGoogle Scholar
Ludvigsen, R. 1978. Towards an Ordovician Trilobite Biostratigraphy of southern Ontario. In Geology of the Manitoulin area. MICHIGAN BASIN GEOL SOC Special paper No. 3, 73–84.Google Scholar
Nicholson, H. A. & Etheridge, R. 1878. A monograph of the Silurian Fossils of the Girvan District, Ayrshire, Fasc. 1, London: Blackwood.Google Scholar
Öpik, A. A. 1937. Trilobiten aus Estland. ACTA COMMENT UNIV TARTU A, 32, 1–163.Google Scholar
Owens, R. M. 1973. British Ordovician and Silurian Proetidae (Trilobita). PALAEONTOGR SOC MONOGR 127, 1–98.CrossRefGoogle Scholar
Portlock, J. E. 1843. Report on the geology of the county of Londonderry and parts of Tyrone and Fermanagh. Dublin: Andrew Milliken.Google Scholar
Reed, F. R. C. 1903–1935. The Lower Palaeozoic Trilobites of the Girvan District, Ayrshire. PALAEONTOGR SOC MONOGR 1903, 1, 1–48; 1904, 2, 49–96; 1914, Suppl. 1–56; 1931, Suppl. 2, 1–30; 1935a, Suppl. 3, 1–64.Google Scholar
Reed, F. R. C. 1935b. Palaeontological Evidence of the Age of the Craighead Limestone. TRANS GEOL SOC GLASGOW 19, 340–372.CrossRefGoogle Scholar
Salter, J. W. 1848, In Phillips, J. and Salter, J. W., Palaeontological Appendix to Professor John Phillips' Memoir on the Malvern Hills… MEM GEOL SURVEY G B vol. 2, part 1.Google Scholar
Shirley, J. 1936. Some British Trilobites of the family Calymenidae. Q J GEOL SOC LONDON 92, 384–422.CrossRefGoogle Scholar
Sinclair, G. W. 1949a. The Ordovician Trilobite Eobronteus. J PALEONT 23, 45–56.Google Scholar
Sinclair, G. W. 1949b. Footnotes to Eobronteus. J PALEONT 23, 571.Google Scholar
Temple, J. T. & Tripp, R. P. 1979. An investigation of the Encrinurinae (Trilobita) by numerical taxonomic methods. TRANS R SOC EDINBURGH 70, 223–50.Google Scholar
Tripp, R. P. 1954. Caradocian Trilobites from Mudstones at Craighead Quarry, near Girvan, Ayrshire. TRANS R SOC EDINBURGH 62, 655–89.CrossRefGoogle Scholar
Tripp, R. P. 1980. Trilobites from the Ordovician Balclatchie and lower Ardwell groups of the Girvan district, Scotland. TRANS R SOC EDINBURGH EARTH SCI 71, 123–182.CrossRefGoogle Scholar
Warburg, E. 1925. The Trilobites of the Leptaena Limestone in Dalarne. BULL GEOL INST UNIV UPSALA 17, 1–446.Google Scholar
Warburg, E. 1939. The Swedish Ordovician and Lower Silurian Lichidae. K SVENSK VET AKAD 17, 1–162.Google Scholar
Whittington, H. B. 1941. Silicified Trenton Trilobites. J PALEONT 15, 492–522.Google Scholar
Whittington, H. B. 1950. Sixteen Ordovician genotype trilobites. J PALEONTOL 24, 531–65.Google Scholar
Whittington, H. B. 1954. Ordovician trilobites from Silliman's Fossil Mount. In Miller, A. K., Youngquist, W. and Collinson, C. Ordovician cephalopod fauna of Baffin Island. MEM GEOL SOC AMER 62, 119–49.Google Scholar
Whittington, H. B. 1968. Cryptolithus (Trilobita): specific characters and occurrence in Ordovician of eastern North America. J PALEONT 42, 702–14.Google Scholar
Williams, A. 1962. The Barr and Lower Ardmillan Series (Caradoc) of the Girvan District, South-west Ayrshire, with descriptions of the Brachiopoda. MEM GEOL SOC LONDON 3, 1–267.Google Scholar