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Emsian (Late Early Devonian) sponges from west-central and south-central Alaska

Published online by Cambridge University Press:  14 July 2015

J. Keith Rigby ,
Robert B. Blodgett  and
Nicolle K. Anderson
J. Keith Rigby
Affiliation:
Room 165, Earth Science Museum, Department of Geological Sciences, Brigham Young University, Provo, Utah 84602-4606,
Robert B. Blodgett
Affiliation:
U.S. Geological Survey—Contractor, 4200 University Drive, Anchorage, Alaska,
Nicolle K. Anderson
Affiliation:
Room 165, Earth Science Museum, Department of Geological Sciences, Brigham Young University, Provo, Utah 84602-4606,
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Extract

Relatively common specimens of the hypercalcified agelasiid sponge Hormospongia labyrinthica Rigby and Blodgett, 1983 and specimens of associated species of Hormospongia have been previously reported from Emsian and Eifelian stratigraphic units at several localities in south-central and southeastern Alaska (Rigby and Blodgett, 1983). Those sponges were first described from the type section of the Eifelian Cheeneetnuk Limestone in the McGrath A-5 quadrangle. Since then several additional specimens of Hormospongia labyrinthica have also been collected from a new locality in the Talkeetna C-6 quadrangle in south-central Alaska (Figs. 1, 2.1), and are documented here.

Type
Paleontological Notes
Information
Journal of Paleontology , Volume 83 , Issue 2 , March 2009 , pp. 293 - 298
Copyright
Copyright © The Paleontological Society

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