radiolaria - rads_cenozoic - Carpocanopsis cristata radiolaria - rads_cenozoic - Carpocanopsis cristata

Carpocanopsis cristata


Classification: rads_cenozoic -> Carpocaniidae -> Carpocanopsis -> Carpocanopsis cristata
Sister taxa: C. bramlettei, C. cingulata, C. cristata, C. favosa, C. sp.

Taxonomy

Citation: Carpocanopsis cristata (Carnevale 1908) Sanfilippo&Riedel 1971
taxonomic rank: species
Basionym: Sethocorys cristata
Synonyms:
1908 ? Sethocorys cristata - Carnevale p. 31, pl. 4, fig. 18
1971 Carpocanopsis cristatum - Riedel and Sanfilippo Plate 1G, Figure 16; Plate 2G, Figures 1-7

From Suzuki Paleotax db:

1908 Sethoconus cristata n. sp. Carnevale p. 31, pl. 4, fig. 18, pl. 4, fig. 19
1971 Carpocanopsis cristatum (Carnevale) Riedel & Sanfilippo p. 1597, pl. 1g, fig. 16, pl. 2g, figs. 1-7
1972 Carpocanistrum cristatum Carnevale [sic] Petrushevskaya & Kozlova p. 536
1974 Carpocanopsis cristatum (Carnevale) ? Johnson p. 550, pl. 8, fig. 1
1984 Carpocanipsis cristata (Carnevale) Nigrini & Lombari N89-N90, pl. 21, fig. 5
1986 Carpocanopsis cristatum (Carnevale) (?) Levyikina p. 71, pl. 7, fig. 11
2006 Carpocanopsis cristata (Carnevale) Nigrini et al. p. 29-30
Taxonomic discussion: (Carnevale) 1908; Riedel and Sanfilippo 1971 p 1597; Johnson & Nigrini 1971

Catalog entries: Sethocorys cristata


Remarks on original description: In description "nella forma precedente" refers to Sethocorys bussoni Carnevale, 1908.

Bracketed stratigraphic information from Sanfilippo, 1971, p.1122, 1125 and Riedel and Sanfilippo, 1971, p.1580.

Description


Published descriptions


Riedel and Sanfilippo 1971 - Sethocorys cristata

(Carnevale)(Plate 1G, Figure 16; Plate 2G, Figures 1-7)

Description: Cephalis hemispherical, in rare specimens bearing a short apical spine, usually separated from the thorax by a change in external contour. Thorax inflated barrel-shaped, with very thick wall and rough surface, and with fewer pores than C. cingulatum and C. bramlettei, not longitudinally aligned. Abdomen usually represented by only a few corroded protuberances on the distal part of the thorax, but to judge from portions preserved on rare specimens it appears not to be separated from the thorax by an externally expressed stricture, and to have irregular pores similar to those of C. cingulatum.

Remarks: This species is distinguished from C. favosum by the abdomen being porous rather than hyaline, and evidently inverted truncate-conical (narrowing distally).It differs from C. cingulatum as indicated in the discussion of that species. Dimensions and other features are generally similar to those given by Carnevale for specimens from the Italian Miocene, but we cannot be confident of the identity of our species with his until there is an opportunity to examine additional Italian material.


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:

Carnevale, P (1908). Radiolaire e silicoflagellati di Bergonzano (Reggio Emilia). Memorie del Reale Instituto Veneto di Scienze, Lettere ed Arti. 28(3): 1-46. gs

Riedel, W. R. & Sanfilippo, A. (1971). Cenozoic Radiolaria from the western tropical Pacific, Leg 7. Initial Reports of the Deep Sea Drilling Project. 7: 1529-1666. gs


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Carpocanopsis cristata compiled by the radiolaria@mikrotax project team viewed: 5-12-2024

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