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Lophocyrtis galenum


Classification: rads_cenozoic -> Theoperidae -> Lophocyrtiidae -> Lophocyrtis -> Lophocyrtis galenum
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 galenum Sanfilippo 1990
Taxonomic rank: species
Basionym: Lophocyrtis galenum
Synonyms:
1972 Cyclampterium sp. cf. C. milowi - Benson p. 1092, pl. 1, figs. 1, 2
1983 Cyclampterium ? milowi - Johnson p. 788, pl. 1, figs. 11, 12
1990 Lophocyrtis (Paralampterium) ? galenum - Sanfilippo p. 303, pl. III, figs. 14, 15

From Suzuki Paleotax db:

1990 Lophocyrtis (Paralampterium) (?) galenum n. sp. Sanfilippo p. 308-309, pl. 3, figs. 14, 15
1997 Lophocyrtis (Paralampterium) (?) galenum Sanfilippo O'Connor pl. 9, fig. 6
Taxonomic discussion: Sanfilippo 1990

Catalog entries: Lophocyrtis galenum

Original description: Description: Three-segmented theoperid with a weakly developed apical horn, pronounced collar and lumbar stricture and three strongly ridged, pored feet. The cephalic wall is perforated by 15-25 small circular to subcircular pores, in some specimens covered by a thick cap - the reduced apical horn. Thorax campanulate to approximately subspherical with a rough surface, sometimes tuberose proximally and about 26-32 pores on the maximum circumference, arranged quincuncially. Abdomen open, short, with rough surface and about 12- 32 pores around the maximum circumference. Three prominent feet with pores proximally depart from the distal abdomen. In many specimens, the abdominal lattice continues beyond the origin of the feet, with smaller pores. The feet are composed of usually four robust ridges that arise from the abdomen, proximally bordering three single rows of pores, the middle row longer than the lateral ones and distally merging to an elongated conical foot. In some specimens the middle two of these ridges enclose two pores while still on the abdominal surface, and sometimes there is an additional short ridge proximally. The outer two (lateral) ridges of each foot in some specimens extend into the abdominal wall sufficiently distinctly to form a thickened peristome (only rarely complete around the circumference )...

Description

Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within Neogene Period (2.59-23.03Ma, top in Piacenzian stage). Data source: Lazarus et al. 2015 - "N age group"
First occurrence (base): within Neogene Period (2.59-23.03Ma, base in Aquitanian stage). Data source: Lazarus et al. 2015 - "N age group"

Plot of occurrence data:

References:

Benson, R. N. (1972). Radiolaria, Leg 12, Deep Sea Drilling Project. Initial Reports of the Deep Sea Drilling Project. 12: 1085-1114. gs

Sanfilippo, A. (1990). Origin of the subgenera Cyclampterium, Parampterium and Sciadiopeplus from Lophocyrtis (Lophocyrtis) (Radiolaria, Theoperidae). Marine Micropaleontology. 15(3-4): 287-312. gs


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Lophocyrtis galenum compiled by the radiolaria@mikrotax project team viewed: 23-1-2025

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Short stable page link: https://mikrotax.org/radiolaria/index.php?id=204585 Go to Archive.is to create a permanent copy of this page - citation notes



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