MILIOLIDAE - Acta Palaeontologica Polonica

70 EWA l.UCZKOWSKA
shape of the test and less regular, bifurcate or sinuate ribs. Some specimens
show a distinctive oblique position of ribs (PI. XVII, Fig. 6), while
in C. karreri ovata the ribs are regular and parallel to the coiling axis.
Distribution. - Poland: Lower Sarmatian (Dwikozy, Grzyb6w, Miechocin,
Mokrzysz6w, Rytwiany). Romania: Lower Sarmatian, Moldavia.
USSR: Lower Sarmatian, West Georgia, Transcarpathians.
Genus Articulina d'Orbigny, 1826
Articulina multibullata n. sp.
(PI. XVI, Figs lOa, b, 11-14)
Holotypus: PI. XVI, Fig. 10.
Paratypi: PI. XVI, Figs 11-14.
Locus typicus: Zrecze 3, bore-hole, depth 64.8-64.9 m.
Stratum typicum: Lower Sarmatian, Syndesmya clays.
Derivatio nominis: (Lat.) multum - many, bulla - bulb, from test composed
of many bulbous chambers.
Diagnosis: The chambers of uniserial stage are strongly inflated, overhanging
in the lower part and irregularly corrugated.
Material. - Over 100 specimes (ColI. No. F-118).
Dimensions: Holotype - L 0.85 mm; Paratypes - initial part length
0.20-0.25 mm; uniserial part length 1.0-1.5 mm.
Description. - Initial part coiled irregularly around proloculus in
a planispiral, triloculine or quinqueloculine manner being sporadically
somewhat evolute; uniserial part composed of about 6 chambers gradually
increasing in size, bulbose in the lower part and ending in a tubular ne.ck
at the top; the inflated part of chambers is irregularly corrugated, showing
overhanging protuberances which give the chambers an umbrella-like
appearance; aperture circular, surrounded with thickened rim, without
tooth.
Variability and ontogeny. The shape of the initial part is variable, from
quinqueloculine to an irregular or confused arrangement of chambers;
the first chamber of the uniserial part adheres to the initial part in
a various way, embracing it partly (PI. XVI, Figs 12-14). The uniserial
part is sporadically arcuate (PI. XVI, Fig. 10).
Remarks. - This species somewhat resembles Articulina sarmatica
(Karrer), from which it however differs in the more inflated, crenulated
and overhanging lower part of the chambers of the uniserial part.
Distribution. - Poland: Lower Sarmatian (Grzyb6w, Rytwiany, Zrecze).
+ Articulina nodosaroides (Karrer, 1867)
(PI. XVI, Figs 15, 16a, b)
1867. TrUoculina nodosaroides Karrer; F. Karrer, p. 360, PI. 2, Fig. 9a-c.
Material. - 15 incomplete specimens (CoIl. No. F-119).
Dimensions: Initial part L 0.2; uniserial part L 1-3.