Cingulochitina, PARIS, 1981

Morávek, Radek, 2009, Lower Wenlock Chitinozoa From The Bykoš Locality (Silurian, Prague Basin, Barrandian Area, Czech Republic), Acta Musei Nationalis Pragae Series B 65 (1 - 2), pp. 37-60 : 40

Cingulochitina bouniensis VERNIERS, 1999

Pl. 1, fig. 9, 9a; pl. 7, fig. 5.

1979 Linochitina sp. B ; Verniers et Rickards, p. 157, pl. 1, figs.

9-10. 1981 Linochitina sp. B ; Verniers, p. 171, pl. 2, fig. 24. 1982 Cingulochitina sp. B , Verniers, p. 23-24, pl. 7, figs. 143-

147, 150-156. 1999 Cingulochitina bouniensis VERNIERS, p. 370-371. 2004 Cingulochitina bouniensis VERNIERS, Mullins et Aldridge,

pl. 5, figs. 4-6, 8-12.

D e s c r i p t i o n: Cono-ovoid Cingulochitina with a very short tapering neck. The shoulders are indistinct, the flanks are straight or convex. A ridge-like carina or folding occurs beneath the maximal width of the vesicle. The carina is visible within the chain of the vesicles. The surface is smooth. No ornamentation was observed. All specimens found were in a chain.

Cingulochitina bouniensis is shorter and wider than C. angusta. The ratio of the D m /L is distinctly different than by the in C. angusta.

D i s c u s s i o n: Specimens described here differ from those decribed by Verniers (1981, 1982 and 1999) in the absence of the longitudinal foldings. Some foldings occur but are randomly distributed and not parallel to the longitudal axis.

O c c u r r e n c e: Mehaigne area, Brabant massif, Belgium (Verniers; 1981, 1982, 1999): late Llandovery to early Wenlock, Member MB3 to MB4.

Ithon East and Trecoed, Builth Wells district, Wales,

UK: late lower Wenlock (graptolite biozone C. murchisoni and M. riccartonensis VERNIERS, 1999).

Hughley Brook section, Hughley, Shropshire ( GSSP for base of the Wenlock; Mullins et Aldridge, 2004), UK : C.

murchisoni graptolite biozone.

Aizpute-41 core, Latvia ( Mullins et Aldridge, 2004): upper part of the C. murchisoni graptolite biozone.