论文信息 - Two new spiriferid brachiopod genera from the Lower Devonian of Nevada

Two new spiriferid brachiopod genera from the Lower Devonian of Nevada

Two new genera, Dyticospirifer and Eurekaspirifer, are proposed for forms known from central Nevada. Dyticospirifer has as its type species D. mccolleyensis n. sp. which is known only from the Trematospira zone of Oriskany (late Siegenian) age. Eurekaspirifer is based on 9Spirifer9 pinyonensis Meek and is restricted to its nominal zone of Emsian age in the Sulphur Spring Range. Reports of E. pinyonensis beyond the Sulphur Spring Range are in error--the forms proving to belong to an undescribed species of Brachyspirifer.

J. G. Johnson

[1] M. House. Observations on the ammonoid succession of the North American Devonian , 1962 .

[2] M. Murphy,et al. Devonian Stratigraphy of Sulphur Springs and Pinyon Ranges, Nevada , 1957 .

[3] J. G. Johnson. Brachiopod faunas of the Nevada Formation (Devonian) in central Nevada , 1962 .

[4] C. W. Merriam. Devonian stratigraphy and paleontology of the Roberts Mountains region, Nevada , 1940 .