Cladpyxis svalbardense, Below, 1987

Now Cladopyxidium. Originally Cladopyxis, subsequently (and now) Cladopyxidium.

Holotype: Below, 1987, pl.29, figs.1,3-4,6; Fensome et al., 1993, p.1361, figs.1,3-4,6
Locus typicus: Eastern slope of Knerten Hill, near DeGeerdalen, Spitsbergen
Stratum typicum: Toarcian

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Original description: [Below, 1987, p.60]: (Translation: Fensome et al., 1993):

Description:
Arrangement of vesicles/plates on the dinoflagellate amphiesma cop, pop, cap, 4", 3a, 7", 7c, 6""", 2"""", as, FM, ls, rs, ps; pentagonal 1"""" and hexagonal 2"""" partiform; omegaform ps very large.
Cyst form proximate to proximochorate, acavate, ovaloidal to polyhedral, epicyst somewhat shorter than hypocyst, equatorial section circular, composed of thin pedium and luxuria, luxuria firm on intraareate spaces, severely reduced on limbi, surface scabrate; the luxuria forms distally serrated, finate septa; areation formula cop, pop, NRcap/cap, 4", 3a, 7", 7c, 6""", 2"""", as, FM, ls, rs, ps; PR comprising small, roundish, oval to lanceolate cop surrounded by an annular pop, cap very small or not reflected; 4 apicals, VII 1" (V), V 2" (L), VII 3" (R), deltaform inverse-camerate 4" (WR); 3 anterior intercalaries, V-VI la (DL), deltaforrn inverse-camerate 2a (D), linteloid 3a (R); 7 precingulars, anteriorly geniculate V-nE 1" (WL), anteriorly geniculate V-nE 2" (L), anteriorly geniculate V-nE 3" (DDL), anteriorly geniculate V-nE 4" (DDR), finis 3"/4"" dorsal, anteriorly linear IVnE 5"" (RDR), anteriorly geniculate V-nE 6"" (VR), anteriorly geniculate V-nE 7" (WR); cingulum helicoid laevorotatory, level, heptapartite, lati 1c-6c, isofastigiate 7c; 6 postcingulars, posteriorly linear V-nE 1""" (WL), posteriorly linear IV-nE 2""" (VL), posteriorly geniculate V-nE 3""" (DL), posteriorly linear IV-nE 4""" (DDR), posteriorly linear IV-nE 5""" (R), posteriorly linear V-nE 6""" (VR); 2 antapicals partiform, V 1"""" (VL), VI 2"""" (R);
sulcus lightly indented on the hypocyst, partite, small VI as, small oval FM, small V ls, small V rs, large omegaform VI ps bulging gently into 2""""; archeopyle presumably epicystal.

Dimensions:
Holotype: length 32 µm, breadth 32 µm, thickness 32 µm.