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Ordovician "sphinctozoan" sponges from Prince of Wales Island, southeastern Alaska

Journal of Paleontology

By:
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DOI: 10.1666/0022-3360(2005)079[0862:OSSFPO]2.0.CO;2

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Abstract

A faunule of silicified hypercalcified "sphinctozoan" sponges has been recovered from a clast of Upper Ordovician limestone out of the Early Devonian Karheen Formation on Prince of Wales Island in southeastern Alaska. Included in the faunule are abundant examples of the new genus Girtyocoeliana, represented by Girtyocoeliana epiporata (Rigby and Potter), and Corymbospongia adnata Rigby and Potter, along with rare Corymbospongia amplia n. sp., and Girtyocoelia(?) sp., plus common Amblysiphonella sp. 1 and rare Amblysiphonella(?) sp. 2. The assemblage is similar to that from Ordovician clasts from the eastern Klamath Mountains of northern California. This indicates that the Alexander terrane of southeastern Alaska is related paleogeographically to the lithologically and paleontologically similar terrane of the eastern Klamath Mountains. This lithology and fossil assemblage of the clast cannot be tied to any currently known local rock units on Prince of Wales Island. Other clasts in the conglomerate appear to have been locally derived, so it is inferred that the limestone clasts were also locally derived, indicating the presence of a previously undocumented Ordovician limestone unit on northern Prince of Wales Island. Copyright ?? 2005, The Paleontological Society.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Ordovician "sphinctozoan" sponges from Prince of Wales Island, southeastern Alaska
Series title:
Journal of Paleontology
DOI:
10.1666/0022-3360(2005)079[0862:OSSFPO]2.0.CO;2
Volume
79
Issue:
5
Year Published:
2005
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Paleontology
First page:
862
Last page:
870