... belonging to the family Areoligeraceae. In total, at least 11 species belonging to eight genera occur throughout the studied section. Emendations are proposed for the genera Canningia , Canninginopsis , Circulodinium , Cyclonephelium and Senoniasphaera . The new species Canningia diastatikos sp. nov...

... an assignment for all three genera to the gonyaulacinean family Areoligeraceae. The new combination Licracysta ? semicirculata is questionably proposed, and the descriptive terms licrate, dolabrate, entire clypeate, ragged clypeate, intratabular, mesotabular, obtabular, contabular and nontabular are either...

...Figure 2. Configuration of the anterior margin of the first precingular paraplate (1′′; indicated by the arrow) in (A) the Areoligeraceae (including the Cyclonephelium group) and (B) the Ceratiaceae (including Pseudoceratium ) according to Bint ( 1986 ). Redrawn after Bint ( 1986 , fig. 11). ...

... Fensome et al . (2008) for references. Order Gonyaulacales Taylor, 1980 Suborder Gonyaulacineae (Autonym) Family Areoligeraceae Evitt, 1963 Genus Senoniasphaera Clarke & Verdier, 1967 Type species . Senoniasphaera protrusa Clarke &Verdier, 1967 : 61, pl. 14, fig...

...: the assemblages are dominated by marine palynomorphs including abundant dinocysts (mainly Gonyaulacaceae and Areoligeraceae) ( Fig. 4 ). Fig. 4. Hauterivian-Albian biostratigraphy and main spore-pollen assemblages. DA, layers with dinocyst assemblages, SPA, layers with spore and pollen assemblages, Pd...

... (Bütschli, 1885) Fensome et al. 1993 Subdivision DINOKARYOTA Fensome et al. 1993 Class DINOPHYCEAE Pascher 1914 Order GONYAULACINEAE Norris 1978 (autonym) Family: AREOLIGERACEAE Evitt 1963 Genus Adnatosphaeridium Williams and Downie 1966 1987 Systematophora sp. Wilson...

... barren of palynomorphs. Family AREOLIGERACEAE Evitt, 1963b Genus Cyclonephelium (Deflandre & Cookson 1955 ) Fensome et al. 2019 Cyclonephelium compactum , Deflandre & Cookson 1955 , pl. 2, Figure 12 1954  Cyclonephelium Deflandre & Cookson, p. 1237...

... is marked by the appearance of new species in the families Areoligeraceae, Cladopixiaceae and among dinoflagellates of unknown systematic position. These are Senoniasphaera jurassica (Gitmez et Sarjeant) Lentin et Williams, Circulodinium compta (Davey) Helby, Tetrachacysta spinosigibberosa (Brideaux...

.... In the Cyclonephelium group, or indeed the family Areoligeraceae as a whole, not only is the tabulation extremely stable but so too is the nature of the archaeopyle; so for classification we have no choice but to resort to features of the wall structure and ornamentation for generic definitions. It seems obvious to us...

... of the limits of its morphological variations. Some researchers assume that the morphology of the species A. anaphrissa brings it closer to the members of the family Areoligeraceae and consider the species as part of the genus Tenua ( Benedek, 1972 ; Pocock, 1976 ). It is these morphotypes that are found...

... to the Family Areoligeraceae and is a ‘compressed gonyaulacoid form’ (e.g., Bint, 1986 ). Monteil (1991) appeared to agree with Helby’s (1987) assertion that Muderongia sp. A of Davey (1979) belonged in Senoniasphaera , as he illustrated this morphotype as Senoniasphaera tabulata Backhouse...

... measured: Diameter of cyst 50–70 µm. Cores L923A and L1423A, and Vot outcrop. Cenomanian to Turonian (Boltenhagen 1977 , 1980 ; Islam 1993 ) and Coniacian to Maastrichtian in the Brazilian equatorial basins (Lana & Roesner 2002 ). Family AREOLIGERACEAE...

.... Suborder Gonyaulacineae Family Areoligeraceae Evitt 1963 Adnatosphaeridium ? chonetum (Cookson & Eisenack 1962) Davey 1969 Adnatosphaeridium tutulosum (Cookson & Eisenack 1960) Morgan 1980 Canningia reticulata Cookson & Eisenack 1960 Circulodinium colliveri...

... pseudofurcatus (Klumpp 1953) Sarjeant 1970, emend. Sarjeant 1981 ( Plate 2 , figures 10–11)       Spiniferites spp. indet. (Plate 2, figure 12)   Family Areoligeraceae Evitt 1963     Genus Glaphrocysta Stover & Evitt 1978       Glaphrocysta spp. ( Plate 3 , figures 1–6)  Suborder Goniodomineae...

.... 2007 ). A decrease in the diversity of dinoflagellate cysts especially has been reported near the O/M boundary (∼23 Ma); the fossil record of dinoflagellate cysts shows extinctions and decreased diversity of the autotrophic family Areoligeraceae, and the heterotrophic subfamilies Wetzelielloideae...

... in the Family Areoligeraceae. Description . Large chorate dinoflagellate cyst with an oblate spheroidal central body slightly dorso-ventrally compressed, but not lenticular. The body is two-layered and comprised of a smooth and thin endophragm and periphragm, the latter of which forms processes...

... Zone; not recorded at Condemios or Tamajón. Previously reported occurrences. FAD Late Jurassic ( Ioannides et al. 1977 ) and LAD Early Palaeocene ( Schumacker-Lambry 1978 ). Family AREOLIGERACEAE Evitt, 1963 Genus Canningia Cookson & Eisenack 1960 emend. Helby 1987 Type...

... with palynology, as there are no sudden changes in assemblage composition around Bed 120. However, there is an increase in areoligeracean dinoflagellate cyst taxa, mainly abundant Tenua hystrix , from Bed 116 to basal Bed 121 (Section 3.1), spanning the proposed boundary. Areoligeraceae may have a relatively...