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Vertebrate microremains from the late Silurian of Arisaig, Nova Scotia, Canada

Published online by Cambridge University Press:  14 July 2015

Carole J. Burrow ,
Susan Turner ,
Godfrey S. Nowlan  and
Robert H. Denison
Carole J. Burrow
Affiliation:
Ancient Environments, Queensland Museum, 122 Gerler Rd., Hendra, Queensland 4011, Australia,
Susan Turner
Affiliation:
Ancient Environments, Queensland Museum, 122 Gerler Rd., Hendra, Queensland 4011, Australia, Steinhammer Palaeontology Laboratory, New Brunswick Museum, 277 Douglas Avenue, Saint John, New Brunswick E2K 1E5, Canada
Godfrey S. Nowlan
Affiliation:
Geological Survey of Canada, 3303-33 Street NW, Calgary, Alberta T2L 2A7, Canada
Robert H. Denison
Affiliation:
Museum of Comparative Zoology, Harvard University, Cambridge, MA 02138, USA, (deceased)
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Abstract

Rare scales of agnathan thelodonts Paralogania ludlowiensis and Thelodus sp. cf. T. parvidens, or alternatively Thelodus macintoshi, and acanthodian fishes Nostolepis striata, Gomphonchus sp., Gomphonchoporus sp. aff. G. hoppei, and Machaeraporus stonehousensis (Legault) n. gen., plus acanthodian fin spines, teeth and tooth whorls have been identified from the upper Moydart and Stonehouse formations near Arisaig, Nova Scotia. The assemblage agrees well with the late Silurian (uppermost Ludlow–Přídolí) age assigned to these strata based on invertebrate assemblages, and the vertebrate taxa show affinity with British and Baltic faunas of this age. All vertebrate-bearing strata were deposited in various positions off the western shores of the Avalonia terrane during or after its collision with Laurentia.

Type
Research Article
Information
Journal of Paleontology , Volume 87 , Issue 6 , November 2013 , pp. 1041 - 1059
Copyright
Copyright © The Paleontological Society 

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