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Cauca parva
Cauca parva, (Alberti, 1961), Davey and Verdier, 1971
Holotype: Alberti, 1961, pl.9, figs.4
Locus typicus: Hildesheim, Germany
Stratum typicum: Early Aptian-Albian
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Original description as Hystrichodinium? parvum: [Alberti, 1961, p. 16]: (Translation: LPP):
Diagnosis:
Outline of shell rounded to oval, flattened. Epitheca more conical than the always larger, at the antapex clearly rounded hypotheca. Transverse furrow ¦ indented. The surface of the shell covered by a delicate membrane, developing from ¦ long marginal processes.
Shell divided by transverse furrow into two unequal halfs, hypotheca max. two times larger than epitheca. Length ratio hypotheca : epitheca 1.3 - 1.5 : 1. Processes, connected by basal sutures or arising from those, pointed at the distal ends. Membrane of shell yellowish to brown.
Dimensions:
Holotype: length of epitheca 9 µm, hypotheca 16 µm, breadth of transverse furrow c. 3 µm, breadth of shell 30 µm. Length of processes 16-22 µm.
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Notes:
G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Cauca parva (Alberti, 1961) Davey and Verdier, 1971, has long sutural spines. Sometimes it may have small tubercles.
Size: central body length 28-38 µm, width 27-40 µm. Processes 12-22 µm.
Holotype: Alberti, 1961, pl.9, figs.4
Locus typicus: Hildesheim, Germany
Stratum typicum: Early Aptian-Albian
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description as Hystrichodinium? parvum: [Alberti, 1961, p. 16]: (Translation: LPP):
Diagnosis:
Outline of shell rounded to oval, flattened. Epitheca more conical than the always larger, at the antapex clearly rounded hypotheca. Transverse furrow ¦ indented. The surface of the shell covered by a delicate membrane, developing from ¦ long marginal processes.
Shell divided by transverse furrow into two unequal halfs, hypotheca max. two times larger than epitheca. Length ratio hypotheca : epitheca 1.3 - 1.5 : 1. Processes, connected by basal sutures or arising from those, pointed at the distal ends. Membrane of shell yellowish to brown.
Dimensions:
Holotype: length of epitheca 9 µm, hypotheca 16 µm, breadth of transverse furrow c. 3 µm, breadth of shell 30 µm. Length of processes 16-22 µm.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Notes:
G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Cauca parva (Alberti, 1961) Davey and Verdier, 1971, has long sutural spines. Sometimes it may have small tubercles.
Size: central body length 28-38 µm, width 27-40 µm. Processes 12-22 µm.