- journal_title：Journal of Paleontology
- Contributor：Colin D. Sumrall ; James Sprinkle ; Thomas E. Guensburg ; Benjamin F. Dattilo
- Publisher：Paleontological Society
- Date：2012-
- Format：text/html
- Language：en
- Identifier：10.1666/10-165R.1
- journal_abbrev：Journal of Paleontology
- issn：0022-3360
- volume：86
- issue：4
- firstpage：595
- section：ARTICLES
d="p-1">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. d-content genus-species" id="named-content-1">Anatifopsis ninemilensis new species comes from the Ninemile Shale in central Nevada and the McKelligon Canyon Formation in west Texas. d-content genus-species" id="named-content-2">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 d-content genus-species" id="named-content-3">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.