Nannotax3 - ntax_mesozoic - Hemipodorhabdus gorkae

Distinguishing features:
Parent taxon (Hemipodorhabdus): Elliptical; central area narrow, spanned by a transverse bar.
This taxon: Podorhabdids with narrow central area spanned by a transverse bar bearing a hollow spine.

Citation: Hemipodorhabdus gorkae (Reinhardt, 1969) Grün in Grün&Allemann, 1975

Basionym: Podorhabdus gorkae Reinhardt, 1969

Synonyms:

Axopodorhabdus gorkae (Reinhardt, 1969) Wind & Wise (1983) (also invalidly proposed in Wise & Wind 1977)
Hemipodorhabdus latiforatus Black 1971 [cf Grün and Allemann, 1975]

Variants: Hemipodorhabdus niger Grün and Allemann, 1975 [separated by them on absence of spine but this may just be preservation]

Taxonomic discussion: The name appears in the original description as Podorhabdus górkae but "diacritical signs are not used in scientific names" (ICN Art 60.6)

Geological Range:
Last occurrence (top): within Turonian Stage (89.39-93.90Ma, top in Turonian stage). Data source: Bown et al. 1998
First occurrence (base): within Berriasian Stage (137.70-143.10Ma, base in Berriasian stage). Data source: Bown et al. 1998

References:

Black, M. (1971a). Coccoliths of the Speeton Clay and Sutterby Marl. Proceedings of the Yorkshire Geological Society. 38: 381-424. gs

Bown, P. R. (2005c). Early to Mid-Cretaceous Calcareous Nannoplankton from the Northwest Pacific Ocean, Leg 198, Shatsky Rise. Proceedings of the Ocean Drilling Program, Scientific Results. 198: 1-82. gs O

Bown, P. R., Rutledge, D. C., Crux, J. A. & Gallagher, L. T. (1998). Lower Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series . 86-131. gs O

Crux, J. A. (1989). Biostratigraphy and palaeogeographical applications of Lower Cretaceous nannofossils from north-western Europe. In, Crux, J. A. & van Heck, S. E. (eds) Nannofossils and their applications: Proceedings of the 2nd INA Conference, London 1987. British Micropalaeontological Society Publication Series . 143-211. gs

Grün, W. & Allemann, F. (1975). The Lower Cretaceous of Caravaca (Spain): Berriasian Calcareous Nannoplankton of the Miravetes Section (Subbetic Zone, Prov. of Murcia). Eclogae Geologicae Helvetiae. 68: 147-211. gs O

Reinhardt, P. (1969). Neue Coccolithen-Arten aus der Kreide. Monatsberichte der Deutschen Akademie der Wissenschaften zu Berlin. 11: 932-938. gs

Varol, O. & Girgis, M. (1994). New taxa and taxonomy of some Jurassic to Cretaceous calcareous nannofossils. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen. 192: 221-253. gs

Wind, F. H. & Wise, S. W. (1983). Correlation of upper Campanian-lower Maestrichtian calcareous nannofossil assemblages in drill and piston cores from the Falkland Plateau, southwest Atlantic Ocean. Initial Reports of the Deep Sea Drilling Project. 71: 551-563. gs

Wise, S. W. & Wind, F. H. (1977). Mesozoic and Cenozoic calcareous nannofossils recovered by DSDP Leg 36 drilling on the Falkland Plateau, south-west Atlantic sector of the Southern Ocean. Initial Reports of the Deep Sea Drilling Project. 36(269-491): -. gs O

Hemipodorhabdus gorkae

References:

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