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Flexicalymene

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Flexicalymene
Flexicalymene tazarensis
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
†Trilobita
Order:
†Phacopida
Suborder:
†Calymenina
Family:
†Calymenidae
Genus:
†Flexicalymene
Species

See text.

Flexicalymene Shirley, 1936,[1]is a genus of trilobites belonging to the order Phacopida, suborder Calymenina and Family Calymenidae. Flexicalymene specimens can be mistaken for Calymene, Gravicalymene, Diacalymene and a few other Calymenina genera. They are used as an index fossil in the Ordovician. Ohio and North America are particularly known for being rich with Flexicalymene fossils.

Type species

  • Flexicalymene caractaci (Salter, 1865). By original designation, Calymene blumenbachii var. Caractaci Salter, 1865 from the Marshbrookian, Dalmanella unguis Biozone (Caradoc Series) of Marshwood Quarry, near Marshbrook, Shropshire, England.[2]

Other species

  • Flexicalymene cambrensis (Salter, 1865), from the Lower Llandeilo Group of Llan Mill, near Narberth, Dyfed, Wales.
  • Flexicalymene acantha Bancroft, 1949, from the Harnage Shale Formation (Harnagian Stage), near Horderley, Shropshire, England.[3]
  • Flexicalymene incerta Barrande, 1852.[4] Found only at Lower part of wooded slope above railroad facing Přeštínská Railway Station (Ordovician of Czech Republic). Assigned by Dean (1963).
  • Flexicalymene planimarginata (Reed, 1906), from the Lower Longvillian (Caradoc Series) of Ynys Galed, 4 km west of Dolbenmaen, Gwynedd, Wales.[5]
  • Flexicalymene cavei Price, 1974, from a Cautleyan marine limestone in the Sholeshook Formation of Moldin, near Llanddowror, Carmarthenshire, Wales.[6]
  • Flexicalymene shirleyi Tripp, 1954. Caradoc marine mudstone in the Craighead Formation (Balclatchie Group), Caradoc Series, of Craighead Quarry near Girvan, Ayrshire, Scotland.[7]
  • Flexicalymene scotica Lamont, (1949, p. 315, P1. 18, figs. 6, 7), uppermost Ordovician (Hirnantian), Girvan, Ayrshire, Scotland.[8]
  • Flexicalymene croneisi Roy, 1941. Upper Ordovician, Baffin Island, (Ontario).<ref>Roy, S. K. 1941. The Upper Ordovician fauna of Frobisher Bay, Baffin Island. Field Museum of Natural History. Geology, Memoirs 2: 1 - 212.
  • Flexicalymene meeki (Ohio, Kentucky and Indiana).
  • Flexicalymene retrorsa (Ohio, Kentucky and Indiana).
  • Flexicalymene granulosa (Ohio, Kentucky and Quebec).
  • Flexicalymene senaria (Quebec, Vermont and New York).
  • Flexicalymene ouzregui Ordovician, Morocco.
  • Flexicalymene tazarensis Ordovician, Morocco.
  • Flexicalymene meeki; Waynesville Formation; Upper Ordovician; Caesar Creek, Ohio.
    Flexicalymene meeki; Waynesville Formation; Upper Ordovician; Caesar Creek, Ohio.
  • Flexicalymene meeki; Waynesville Formation; Upper Ordovician; Caesar Creek, Ohio.
    Flexicalymene meeki; Waynesville Formation; Upper Ordovician; Caesar Creek, Ohio.
  • F. meeki
    F. meeki
  • Flexicalymene species on display at State Museum of Pennsylvania. Specimen is approximately 3 cm long
    Flexicalymene species on display at State Museum of Pennsylvania. Specimen is approximately 3 cm long
  • Rolled F. ouzregui
    Rolled F. ouzregui

References

  1. ^ "†Flexicalymene Shirley 1936 (trilobite)". Paleobiology Database. Retrieved 21 August 2011.
  2. ^ Salter, J. W. 1865. A monograph of the British trilobites from the Cambrian, Silurian and Devonian formations. Monograph of the Palaeontographical Society, 81 - 128, pls. 17 - 14.
  3. ^ Dean, W. T., 1963, The Ordovician trilobite faunas of South Shropshire, III; British Mus. Nat. History Bull., Geology, v. 7, no. 8, p. 216 , pl. 37, figs. 1, 3 - 6, 14.
  4. ^ BARRANDE, J. 1852. Systême silurien du centre de la Bohême: lère partie, Crustacés: Trilobites. 935 pp. Privately published, Prague & Paris.
  5. ^ Reed. 1906. The Lower Palaeozoic trilobites of the Girvan district, Ayrshire. Part 3. Monographs of the Palaeontographical Society, 97 - 186, pls. 14 - 20.
  6. ^ Price, D. 1974. Trilobites from the Sholeshook Limestone (Ashgill) of South Wales. Palaeontology 17 (4): 841 - 868.
  7. ^ Tripp, R. P. 1954. Caradocian trilobites from the mudstones at Craighead Quarry, near Girvan, Ayrshire. Transactions of the Royal Society of Edinburgh 62 (3): 655 - 693.
  8. ^ Owen, A. W. 1986. The uppermost Ordovician (Hirnantian) trilobites of Girvan, SW Scotland with a review of coeval trilobite faunas. Transactions of the Royal Society of Edinburgh 77: 231 - 239.


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