radiolaria - rads_cenozoic - Carpocanium kinugasense radiolaria - rads_cenozoic - Carpocanium kinugasense

Carpocanium kinugasense


Classification: rads_cenozoic -> Carpocaniidae -> Carpocanium -> Carpocanium kinugasense
Sister taxa: C. kinugasense, C. rubyae, C. sp.

Taxonomy

Citation: Carpocanium kinugasense Nishimura 1990
taxonomic rank: species
Basionym: Carpocanium kinugasense
Synonyms:
1990 Carpocanium kinugasense - Nishimura p. 167; figs. 41-la, b, 3, 6-9; 42-la-2d

From Suzuki Paleotax db:

1990 Carpocanium kinugasense n. sp. Nishimura p. 167-168, figs. 41.1a, 41.1b, 41.3a, 41.6-41.9, 42.1a-42.2d
1992 Carpocanium kinugasense Nishimura Wang & Yang p. 102, pl. 2, figs. 1, 2
Taxonomic discussion: Nishimura, 1990 p.167-168, pl.41, figs.1,3,6-9; pl.42, figs.1,2

Catalog entries: Carpocanium kinugasense

Original description: Diagnosis: Ovate shell without stricture. Cephalis large and cap-shaped. Peristome slightly flared. Shell wall with many dimples.

Description: Shell ovate, 8993 um in width and 111 114 um in length. Cephalis cap-shaped. Ratios of width and length between cephalis and thorax 1:3 and 1:4, respectively. Cephalic pores variable in size, circular and scattered. Thoracic pores circular and forming 18 to 20 vertical rows. Shell wall smooth in earliest stage of shell growth. About 10 lirae from thoracic pores extended downwards being gradually conspicuous. Cephalic wall has many dimples between pores. Thoracic wall becomes smooth in most mature specimens. Peristome thick, long and flared.

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:

Nishimura, H. (1990). Taxonomic study on Cenozoic Nassellaria (Radiolaria). Science Reports of the Institute of Geosciences, University of Tsukuba. 11: 69-172. gs


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Carpocanium kinugasense compiled by the radiolaria@mikrotax project team viewed: 9-9-2024

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