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Yochelson, Ellis L., Kirchgasser, William T. (1986) The youngest styliolines and nowakiids (Late Devonian) currently known from New York. Journal of Paleontology, 60 (3) 689-700 doi:10.1017/s0022336000022216

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Reference TypeJournal (article/letter/editorial)
TitleThe youngest styliolines and nowakiids (Late Devonian) currently known from New York
JournalJournal of Paleontology
AuthorsYochelson, Ellis L.Author
Kirchgasser, William T.Author
Year1986 (May)Volume60
Issue3
PublisherCambridge University Press (CUP)
DOIdoi:10.1017/s0022336000022216Search in ResearchGate
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Mindat Ref. ID413886Long-form Identifiermindat:1:5:413886:4
GUID0
Full ReferenceYochelson, Ellis L., Kirchgasser, William T. (1986) The youngest styliolines and nowakiids (Late Devonian) currently known from New York. Journal of Paleontology, 60 (3) 689-700 doi:10.1017/s0022336000022216
Plain TextYochelson, Ellis L., Kirchgasser, William T. (1986) The youngest styliolines and nowakiids (Late Devonian) currently known from New York. Journal of Paleontology, 60 (3) 689-700 doi:10.1017/s0022336000022216
In(1986, May) Journal of Paleontology Vol. 60 (3) Cambridge University Press (CUP)
Abstract/NotesThis is the first report of styliolines in the Angola Shale Member of the West Falls Formation in western New York. These specimens are of late Frasnian age and are the youngest individuals known from the Appalachian Region. This upward extension of range places the extinction of styliolines in eastern North America more in accord with their time of extinction in Europe. Nowakiids have also been found in the younger Hanover Shale Member, in the upper part of the Java Formation, also of late Frasnian age. These are the youngest known nowakiids from the Appalachians. Within the limits of preservation, the external characters and wall structure of the Angola styliolines are comparable with those of older specimens. The associated rare small annulated nowakiids and homotcenids have a laminated wall structure fundamentally different from that of the styliolines.


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