There are 2 matches

Collection Authorizer Collection name Reference
214346J. Marcot UCMP loc. B-5247, Willow Creek (= 3 miles southwest of Gazelle; probably locality 6 of Diller and Schuchert 1894 (see Churkin, Jr. and Langenheim, Jr. 1960)) Wenlock/Pridoli - Silurian 2 - California Churkin (1961)
229581J. Marcot USGS. loc. M87, south side of Mallethead Ridge, Klamath Mountains (= Reef 2408; Willow Creek area) Ludlow - Silurian 2 - California Merriam (1972)

Do another search