Podocyrtis dorus


Classification: rads_cenozoic -> Pterocorythidae -> Podocyrtis -> Podocyrtis dorus
Sister taxa: P. acalles, P. ampla, P. apeza, P. aphorma, P. argulus, P. chalara, P. coronatus, P. diamesa, P. dorus, P. fasciolata, P. goetheana, P. helenae, P. mitra, P. mitrella, P. papalis, P. phyxis, P. platypus, P. sinuosa, P. trachodes, P. sp.

Taxonomy

Citation: Podocyrtis dorus Sanfilippo & Riedel 1973
Rank: species
Basionym: Podocyrtis dorus
Taxonomic discussion: Sanfilippo & Riedel 1973 p.531 pl.35 figs.12-14; Sanfilippo & Riedel 1992; No: Podocyrtis (Podocyrtis) dorus

Catalog entries: Podocyrtis dorus

Original description: Thorax pronouncedly inflated-conical, and lumbar stricture distinct. Pores aligned strictly longitudinally on both thorax and abdomen, those of the abdomen somewhat larger than those of the thorax, separated by longitudinal ridges. Abdomen tapers distally to a mouth at least as narrow as that in the specimen illustrated by Riedel and Sanfilippo (1970, pl.12, fig.5). Abdomen in some specimens short, as if compressed, narrowing abruptly rather than tapering distally. The poreless peristome bears a variable number of short triangular teeth, rather than three spathulate feet
Remarks on original description: The pronouncedly inflated thorax, with pores aligned longitudinally and separated by longitudinal ridges is rather constant. The abdomen, however, is quite variable in length and in the degree of inflation, but always tapering to a constricted aperture. The thoracic pore rows, separated by longitudinal ridges, continue in the abdomen, but are variably expressed depending on the degree of inflation of the abdomen. Sometimes additional pore rows are inserted and thus Podocyrtis (Podocyrtoges) dorus
the longitudinal alignment is offset. Maximum width of the abdomen usually medianly, but varies from proximally to distally. (Sanfilippo, unpublished)[comment from RadWorld database]

Description

Biogeography and Palaeobiology

Biostratigraphic distribution

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:

References:

Sanfilippo, A. & Riedel, W. R. (1973). Cenozoic Radiolaria (exclusive of theoperids, artostrobiids and amphipyndacids) from the Gulf of Mexico, Deep Sea Drilling Project Leg 10. Initial Reports of the Deep Sea Drilling Project. 10: 475-608. gs

Sanfilippo, A. & Riedel, W. R. (1992). The origin and evolution of Pterocorythidae (Radiolaria): A Cenozoic phylogenetic study. Micropaleontology. 38(1): 1-36. gs


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Podocyrtis dorus compiled by the radiolaria@mikrotax project team viewed: 28-10-2020

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