Analyses of Mesozoic and Ceno- zoic Organic-Walled Dinoflagellates 1977-1985. 1987. (AASP Contr.Ser.,8) more than 85 figs. (line-drawings). 243 p. Lex8vo. In Binder.

The systematic analyses of fossil organic-walled dinoflagellate generain the style presented first in Stover and Evitt (1978), has provenvaluable for comparing genera and summarizing their major morphologiccharacters. Accordingly, in their analyses of the generapublished in the last decade, the authors have followed, with minormodifications, the format of those authors. Of the 111 genera appraisedin this publication, the authors recognize 84 as valid dinoflagellategenera, 23 as junior synonyms or homonyms and 2 as belonging to theAcritarcha. In addition, Bejuia is proposed as a new name for the juniorhomonym Burtonia Beju 1983 (not Burtonia R. Brown 1811) and Gippslandiagen.nov. is established. Line drawings of all valid genera discussed areincluded, except for Tubulifera. Evaluations and comparisons of morethan 200 species resulted in 31 reassignments and other changes asfollows: 4 species are considered as junior synonyms, 9 are returned toprior assignments and 18 species are transferred as new combinations toother genera.