16. Radiolaria - Deep Sea Drilling Project

M. G. PETRUSHEVSKAYA, G. E. KOZLOVA
Carpocanistrum sp. O
(Plate 22, Figures 28, 30)
Carpocanistrum sp. Riedel and Sanfilippo, in press, pi. 2F, figs. 5-7,
part.
Test about 70-90µ long and 65-75µ broad. About eight to nine
longitudinal rows or pores on the half equator of the thorax. About
seven or eight pores in one row. Mouth as a short tube.
Oligocene-Miocene.
Carpocanistrum sp. aff. C. pulchrum
(Plate 22, Figures 19, 20)
Carpocanistrum sp. Riedel and Sanfilippo, in press, pi. 3D, figs, 3, 5,
part.
^Carpocanium pulchrum Carnevale, 1908, p. 30, pi. 4, fig. 15.
Test about 70-100µ long and 70-90µ broad. About six to eight
longitudinal rows of pores on the half equator of the thorax. About
six pores in one row. Rows are separated by longitudinal ridges.
Mouth as a short tube.
Upper Oligocene-Miocene.
Carpocanistrum cristatum Carnevale
Sethocorys cristata Carnevale, 1908, p. 31, pi. 4, fig. 18.
Carpocanopsis cristatum (Carnevale) Riedel and Sanfilippo, in press,
pi. 1G, fig. 16, pi. 2G, figs. 1, 2, part.
The description as in Riedel and Sanfilippo. But only about nine
or ten pores on the half equator of the thorax. Cephalis plus thorax
are about 75-80µ long.
Miocene.
Genus CARPOCANIUM Ehrenberg sens. str.
Carpocanium Ehrenberg, 1847b, p. 54; Haeckel 1887, 1279;
Campbell, 1954, pi. 127; Petrushevskaya, 1971b, p. 239, part. =
Carpocanidium Haeckel, 1887, p. 1280; Campbell, 1954, p. 127.
Type species Lithocampe solitaria Ehrenberg 1844 (1854, pi. 22,
fig. 28).
Cyrtocalpis Haeckel, 1860, p. 835; 1887, p. 1185; Campbell, 1954,
p. 121. Type species Cyrtocalpis amphora Haeckel (1862, pi. 5,
fig. 2).
Very much the same as Carpocanistrum, but the thoracic wall is
thinner. The thorax is ovate, nearly cylindrical.
Carpocanium sp. aff. C. coronatum Ehrenberg
(Plate 22, Figures 25, 26)
" Carpocanium coronatum Ehrenberg, 1858, p. 30; 1875, pi. 5,
fig. 7.
1 Carpocanistrum sp. Riedel and Sanfilippo, in press, pi. 3D, fig. 8,
part.
Test about 70-80µ long and 60-70µ broad. About eleven
longitudinal rows of the pores on the half equator of the thorax.
About nine to ten pores in a row. Mouth as a short tube.
Oligocene.
Genus CARPOCANOBIUM Haeckel
Carpocanobium Haeckel, 1887, p. 1282; Campbell, 1854, p. 127.
Type species Carpocanium trepanium Haeckel, 1887, pi. 52,
fig. 18.
Asecta Popofsky, 1903, p. 373; Campbell, 1954, p. 128. Type
species Asecta prunoides Popofsky, 1913, text-fig. 89.
The thoracic wall is thin. The thorax is broader in its distal part
than near the cephalis.
Carpocanobium sp. aff. C. setosa (Ehrenberg)
(Plate 22, Figures 27, 28)
IHalicalyptra setosa Ehrenberg, 1875, pi. 2, fig. 12.
Carpocanium hexagonale Haeckel, 1887, p. 1282, pi. 52, fig. 15.
Carpocanistrum sp Riedel and Sanfilippo, in press, pi. 3D, figs. 7, 9.
Test about 80-100µ long and up to 70-85µ broad. Longitudinal
rows or pores are uncertain. There are about twelve pores on the
half equator of the thorax, and about eight or nine pores on the
length of the thorax. Mouth as a broad tube (very short).
Oligocene.
536
Subfamily Group C
Includes Carpocaniidae with pores arranged irregularly or in
checker-board order. Abdomen is rather large. Pores on the
abdomen are similar to those on the thorax.
This group was described by P. Dumitrica (1970, p. 53-54) as
"Cryprocephalic tricyrtid group". But here this group is accepted in
a narrower sense than was suggested by P. Dumitrica. The species
which are distinguished by longitudinal arrangement of pores
{Diacanthocapsa comys, Diacanthocapsa sp. Dumitrica 1970, pi. 20,
figs. 129-130) are included in the present paper as real Carpocaniidae.
As can be seen on Figure 43, Plate 7 in Dumitrica's report,
the species mentioned above not only have a spherical eucephalic
part (chamber) of the cephalis, but also the surrounding parts
(lobes) of the cephalis. One of these parts, the lateral lobe, is even
figured by P. Dumitrica on Figure 43. It is the same lobe as figured
by M. Petrushevskaya (1968d, fig. 9). All these Carpocaniids are not
included in the cryptocephalic group in question. By the way, the
eucephalic chamber in this latter group is not so deeply hidden in
the skeleton as is typical for real Carpocaniinae, and the subfamily
group in question is very similar to many Eucyrtidiidae {Lithocampe,
Theocotyle).
Genus DIACANTHOCAPSA Squinabol
Diacanthocapsa Squinabol, 1903, p. 133; Campbell, 1954, p. 129;
Dumitrica, 1970, p. 61. Type species Diacanthocapsa euganea
Squinabol (1903, pi. 8, fig. 26).
Diacanthocapsa sp. A group
(Plate 7, Figure 11; Plate 22, Figures 4, 6)
ITheocapsa (Theocapsomma) amphora Campbell and Clark, 1944b,
p. 35, pi. 7, figs. 30,31.
?Theocapsomma amphora (Campbell and Clark) Foreman, 1968, p.
31, pi. 4, figs. 9a-c.
Our Cretaceous specimens (Plate 7, Figure 11) differ from the
Tertiary specimens in the outline of the abdomen (Plate 22, Figures
4,6).
Cretaceous-Tertiary.
Diacanthocapsa sp. B
(Plate 7, Figures 4, 5)
Theocapsomma sp. Riedel and Sanfilippo, 1970, pi. 3, fig. 1.
Differs from Diacanthocapsa sp. A group by its more pronounced
cephalis.
Cretaceous (Maestrichtian).
Family ARTOSTROBIIDAE Riedel
Artostrobiidae Riedel, 1967a, p. 149; 1967b, p. 296; Petrushevskaya,
1971a, p. 985; 1971b, p.235.
Cephalis originally widely open to the thorax. It consists of a
eucephalic lobe and antecephalic lobe. The latter has only a
"dorsal" (sens. H. Foreman, 1968) part, without the apical-dorsal.
As a rule, there is a distinct tube connected with the spine Vert—see
Petrushevskaya, 1968b, fig. 6.
Subfamily Group A
Includes three-segmented genera having the pores disposed
irregularly or in distinct longitudinal rows.
Genus RHOPALOSYRINGIUM Campbell and Clark,
emend. Foremen
Rhopalosyringium Campbell and Clark, 1944b, p. 30; Campbell,
1954, p. 130; Foreman, 1968, p. 54. Type species Rhopalosyringium
magnificum Campbell and Clark (1944b, pi. 7, figs. 16,
17).
Rhopalosyringium sp. aff. R. magnificum
(Plate 7, Figures 14-17)
1Rhopalosyringium magnificum Campbell and Clark, 1944b, p. 30,
pi. 7, figs. 16, 17; Foreman, 1968, p. 55, pi. 6, figs. 7, a, b.
ITheoperid gen. sp. indet. Riedel and Sanfilippo, 1970, pi. 3, fig. 4.
Cretaceous (Campanian-Maestrichtian).