Introduction
 The clymeniid faunas of the Urals and Kazakhstan are reknowned for their
 diversity and abundance. Thousands of excellently preserved shells represent all
 known families and most genera. Ammonoids are mostly found in carbonate
 units containing almost exclusively cephalopods and conodonts with very little
 or no benthic fauna.  The most comprehensive research on the fauna was by
 Bogoslovsky (1955, 1960, 1962, 1965, 1969, 1971, 1975, 1976, 1977, 1979a, b,
 1981, 1983) although several previous workers (Tschernyshev, 1887; Perna,
 1914; Kolotukhina, 1938; Kind, 1944; Nalivkina, 1953; among others) provided
 valuable data.  Bogoslovsky's collection includes over 15,000 specimens col-
 lected by him and many mapping geologists.  Unfortunately, most of Bogoslovsky's
 notes and field books were lost after his death in 1986; the huge collection
 remained poorly labeled and unusable until new fieldwork was conducted in this
 region in 2001.  During research by the staff of the Paleontological Institute,
 Russian Academy of Sciences, Moscow, the most important localities were resam-
 pled and redescribed, and most horizons where Bogoslovsky's specimens were
 collected were found.