Entapiidae Dumitrica in De Wever, Dumitrica, Caulet, Nigrini & Caridroit 2001
Description
Family ENTAPIIDAE Dumitrica in De Wever, Dumitrica, Caulet, Nigrini & Caridroit, 2001
Entapiidae Dumitrica in De Wever, Dumitrica, Caulet, Nigrini & Caridroit, 2001: 118-119.
Entapiinae – Afanasieva et al. 2005: 273. — Afanasieva & Amon, 2006: 110.
TYPE GENUS. — Entapium Sanfilippo & Riedel, 1973: 491 [type species by original designation: Entapium regulare Sanfilippo & Riedel, 1973: 492]
INCLUDED GENUS. — Entapium Sanfilippo & Riedel, 1973: 491.
DIAGNOSIS. — Skeleton consists of two shells. The innermost shell has a pyriform shape and the outer shell is latticed and spherical. Three to six radial bladed beams penetrate the outer shell to form bladed radial spines. No fine radial beams were observed.
STRATIGRAPHIC OCCURRENCE. — Middle Paleocene-early Middle Eocene.
REMARKS
The internal skeletal structure for Entapium was illustrated (Nakaseko & Nishimura 1982: pl. 22, fig. 6?; Nishimura 2001; pl. 1, fig. 13; Sanfilippo & Riedel 1973: pls 23, 24). However, Entapium showed an outward migration of the medullary shell towards the cortical shell which ultimately tends to disappear. O’Connor (1999) coined the new genus name Zealithapium but this latter genus is not an Entapiidae. The numerous radial spines similar to those of Stylosphaeridae morphotypes were observed, but the characteristics of these radial spines are different between the two families.
Notes
Files
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Linked records
Additional details
Identifiers
Biodiversity
- Family
- Entapiidae
- Kingdom
- Chromista
- Order
- Spumellaria
- Phylum
- Retaria
- Scientific name authorship
- Dumitrica in De Wever, Dumitrica, Caulet, Nigrini & Caridroit
- Taxon rank
- family
- Taxonomic concept label
- Entapiidae De, 2001 sec. Suzuki, Caulet & Dumitrica, 2021
References
- DE WEVER P., DUMITRICA P., CAULET J. P., NIGRINI C. & CARIDROIT M. 2001. - Radiolarians in the sedimentary record, Amsterdam, 533 p. https: // doi. org / 10.1201 / 9781482283181
- AFANASIEVA M. S., AMON E. O., AGARKOV Y. V. & BOLTOVSKOY D. S. 2005. - Radiolarians in the geological record. Paleontological Journal 39 (3, Suppl. S.): 135 - 392.
- AFANASIEVA M. S. & AMON E. O. 2006. - Biotic crises and stages of radiolarian evolution in the Phanerozoic. Paleontological Journal 40 (4): S 453 - S 467. https: // doi. org / 10.1134 / S 0031030106100054
- SANFILIPPO A. & RIEDEL W. R. 1973. - Cenozoic Radiolaria (exclusive of theoperids, artostrobiids and amphipyndacids) from the Gulf of Mexico, DSDP Leg 10, in WORZEL J. L., BRYANT W. et al. (eds), Initial Reports of the Deep Sea Drilling Project. Vol. 10. U. S. Government Printing Office, Washington, D. C.: 475 - 611. https: // doi. org / 10.2973 / dsdp. proc. 10.119.1973
- NAKASEKO K. & NISHIMURA A. 1982. - Radiolaria from the bottom sediments of the Bellingshausen Basin in the Antarctic Sea, Report of the Technology Research Center, Japan National Oil Corporation, 91 - 244 p.
- NISHIMURA A. 2001. - Paleocene Radiolarians from DSDP Leg 43, Site 384 in the Northwest Atlantic. News of Osaka Micropaleontologists, special Volume 12: 293 - 320. [in Japanese]
- O'CONNOR B. 1999. - Radiolaria from the Late Eocene Oamaru Diatomite, South Island, New Zealand. Micropaleontology 45 (1): 1 - 55. https: // doi. org / 10.2307 / 1486201