Title

Early Ordovician Mitrates and a Possible Solute (Echinodermata) from the Western United States

Document Type

Article

Publication Date

7-2012

Publication Source

Journal of Paleontology

Volume

86

Issue

4

Inclusive pages

595-604

Peer Reviewed

yes

Abstract

Two new kirkocystid mitrate stylophorans (Echinodermata, Homalozoa) and a new possible solute (Echinodermata, Homalozoa) are described from the Early Ordovician of the western United States. The mitrates are among the earliest members of their clade to appear near the beginning of the Ordovician Radiation. Anatifopsis ninemilensis new species comes from the Ninemile Shale in central Nevada and the McKelligon Canyon Formation in west Texas. Anatifopsis fillmorensis new species comes from the middle Fillmore Formation in western Utah and a Ninemile Shale equivalent limestone bed in southern Nevada. The possible solute Drepanocystis dubius new genus new species from the lower Wah Wah Limestone in western Utah, shows unusual morphology with an elongate theca and a long arm shaped like a sickle.

Disciplines

Earth Sciences | Paleontology

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Link to Original Published Item

http://www.psjournals.org/doi/abs/10.1666/10-165R.1