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radiolaria - rads_cenozoic - Lophocyrtis nomas radiolaria - rads_cenozoic - Lophocyrtis nomas

Lophocyrtis nomas


Classification: rads_cenozoic -> Theoperidae -> Lophocyrtiidae -> Lophocyrtis -> Lophocyrtis nomas
Sister taxa: L. andriashevi, L. aspera, L. brachythorax, L. dumitricai, L. exitelus, L. galenum, L. hadra, L. inaequalis, L. jacchia, L. keraspera, L. klydus, L. leptetrum, L. longiventer, L. milowi, L. neatum, L. nomas, L. oberhaensliae, L. pegetrum, L. pseudojacchia, L. semipolita, L. tanythorax, L. sp.

Taxonomy

Citation: Lophocyrtis nomas Sanfilippo & Caulet 1998
Taxonomic rank: species
Synonyms:
1998 Lophocyrtis (Apoplanius) nomas - Sanfilippo and Caulet p. 15, pl. 3, figs. 1-4

From Suzuki Paleotax db:

1998 Lophocyrtis (Apoplanius) nomas n. sp. Sanfilippo & Caulet p. 15-16, pl. 3A, figs. 1-4; pl. 3B, figs. 3, 4; pl. 6, figs. 1, 5
2005 Lophocyrtis (Apoplanius) nomas Sanfilippo & Caulet Funakawa & Nishi pl. 4, figs. 4a, 4b

Catalog entries: Lophocyrtis nomas

Original description: Cylindrical, three-segmented theoperid with an inflated subspherical thorax and cylindrical abdomen. Cephalis spherical, with a few small pores, or poreless, bearing a short conical apical horn, rarely with three ridges at its base. Apical spine partially free within the cephalis. Very short mitral arches merge with the top of the cephalic wall a short distance from the apical spine. The thorax is subspherical to inflated campanulate, and its surface smooth to slightly roughened by the pore frames. There are 20-30 quincuncially arranged circular pores on a half circumference. Collar and lumbar strictures well defined. Abdomen cylindrical to tapering distally with pores similar in size and arrangement to those on the thorax. The abdominal shell wall is more delicate than that of the thorax. Undifferentiated termination.

Description

Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within (-Ma, top in "Holocene" stage). Data source:
First occurrence (base): within (-Ma, base in "Holocene" stage). Data source:

Plot of occurrence data:

References:

Sanfilippo, A. & Caulet, J. (1998). Taxonomy and evolution of Paleogene Antarctic and tropical Lophocyrtid radiolarians. Micropaleontology. 44(1): 1-43. gs


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Lophocyrtis nomas compiled by the radiolaria@mikrotax project team viewed: 25-4-2025

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