From Suzuki Paleotax db:
1973 Periphaena delta n. sp. Sanfilippo & Riedel p. 523, pl. 8, figs. 11, 12, pl. 27, figs. 6, 7
1974 Periphaena delta Sanfilippo et Riedel Nigrini p. 1065, pl. 1C, fig. 7
1977 Periphaena delta Sanfilippo & Riedel Riedel & Sanfilippo pl. 5, fig. 12
1978 Periphaena delta Sanfilippo et Riedel Riedel & Sanfilippo p. 71, pl. 7, fig. 9
1985 Periphaena cf. delta Sanfilippo et Riedel Watanabe & Iwata pl. 1, fig. 8
1986 Periphaena delta Sanfilippo et Riedel Riedel & Sanfilippo pl. 3, fig. 3
1987 Periphaena delta Sanfilippo & Riedel Suyari & Yamasaki pl. 3, fig. 15
1988 Periphaena delta Sanfilippo & Riedel Suyari & Yamasaki pl. 3, fig. 14
Catalog entries: Periphaena delta
Original description: Lenticular cortical shell with short, broad marginal spines. Cortical shell with thick wall, smooth surface, and numerous. small, cylindrical pores, with broad. delta-shaped. radially striated spines (usually six in number) arising as extensions of the margin. Medullary shell double.
Geological Range:
Last occurrence (top): within Paleogene Period (23.03-66.04Ma, top in Chattian stage). Data source: Lazarus et al. 2015 - "P age group"
First occurrence (base): within Paleogene Period (23.03-66.04Ma, base in Danian stage). Data source: Lazarus et al. 2015 - "P age group"
Plot of occurrence data:
Periphaena delta compiled by the radiolaria@mikrotax project team viewed: 16-9-2024
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