ABSTRACT-Upper Changhsingian strata occur as isolated outcrops in the Malaya Laba and Belaya river
 basins in the Peredovoy Range of the northwestern Caucasus Mountains and include shelfal limestone,
 reefal and biohermal buildups, and terrigenous clastics, here  placed in the Belalabinskaya Group.  These
 lithofacies contain a varied and rich assemblage of brachiopods, bivalves, ammonoids, inozoan sponges,
 and algae.  This biota is Late Changhsingian in age and correlates with similar biotas described in south
 China, the Pamir Mountains, South Primorye in far eastern Russia, and Transcaucasia.  The brachiopod
 genera and biotic assemblages are very similar to those of the Cathaysian Subprovince of the Tethyan
 Province.  Two new families, Labaellidae md Licharewiconchidae; four new genera, Labaella,
 Licharewiconcha, Tethysiella, and Nikitinia; a new diagnosis of  Caucasoproductus; and four new
 species of  brachiopods, Rhipidomella caucasica, Cathaysia caucasica, Nikitinia licharewi, and
 Licharewina praetriassica, are described. One new genus and species of ammonoid, Neoglassoceras
 caucasicus, and one new species of bivalve, Claraioides labensis, are described.