CATALOG OF ORIGINAL DESCRIPTIONS: Podocyrtis ampla fasciolata Ehrenberg 1873

This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.


Higher levels: rads_cat -> P -> Podocyrtis -> Podocyrtis ampla fasciolata
Other pages this level: P. acalles, P. aculeata, P. aegles, P. aerostatica, P. amphiacantha, P. ampla, P. ampla fasciolata, P. apeza, P. aphorma, P. argulus, P. argus, P. attenuata, P. bicornis, P. brevipes, P. brevipes jh, P. centriscus, P. chalara, P. charybdea, P. collaris, P. conica, P. conulus, P. corythaeola> >>

Podocyrtis ampla fasciolata

Citation: Podocyrtis ampla fasciolata Ehrenberg 1873
Rank: sub-species
Type repository: Ehrenberg's collection, Museum für Naturkunde, Berlin
Described on page(s) : p.248
Family (traditional): Pterocorythidae
Family (modern): Pterocorythidae

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Current identification:


Original Description
Description: Shell thick-walled, smooth. Cephalis subspherical with numberous subcircular pores, bearing a short, 3-bladed apical horn approximately the same length as the cephalis. Thorax campanulate to almost conical with subcircular pores aligned longitudinally (4 to 7 in a row) and distinct ridges between the pore rows; six to eight pores on a half-equator. Lumbar scripture distinct. Abdomen inflated, wider than thorax at its maximum breadth, narrows distally. Subcircular pores, larger than thoracic pores, usually aligned longitudinally (3 to 7 in a row) but sometimes irregular; six to eight on a half-equator. Wide poreless peristome usually with a smooth termination, but may show some thickening indicative of incipient feet. Rarely, three spathulate feet present. Dimensions (based on 20 specimens): Thorax 50μ to 83μ long, 65μ to lOOμ wide (usually 83μ to lOOμ). Abdomen 83μ to 150μ long, 115μ to 165μ wide. Remarks: In Leg 23 material this subspecies occurs at about the level where one would expect to find P. ampla ampla and it may well be a geographic variant. It is distinguished from the nominate subspecies by having a more distinct lumbar stricture and more inflated abdomen; the shell is generally heavier and smaller, and the apical horn is 3-bladed rather than conical.

Editors' Notes
dbl - added subspecies desc. from Nigrini 18.3.19

References:

Nigrini, C. A. (1974). Cenozoic Radiolaria from the Arabian Sea, DSDP Leg 23. Initial Reports of the Deep Sea Drilling Project. 26: 1051-1121. gs


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Podocyrtis ampla fasciolata compiled by the radiolaria@mikrotax project team viewed: 25-1-2021

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