radiolaria - rads_cat - Palaeotetrapyle muelleri radiolaria - rads_cat - Palaeotetrapyle muelleri

CATALOG OF ORIGINAL DESCRIPTIONS: Palaeotetrapyle muelleri Dumitrica 1988

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 -> Palaeotetrapyle -> Palaeotetrapyle muelleri
Other pages this level: P. muelleri

Palaeotetrapyle muelleri

Citation: Palaeotetrapyle muelleri Dumitrica 1988
Taxonomic rank: species
Described on page(s) : p.186
Type specimens: pl.2, figs.1-9, pl.5, figs.1-17
Type repository: Holotype: P. 105-461, Collection Institute of Geology and Geophysics, Bucharest, Romania.
Family (traditional): Pyloniidae
Family (modern): Pyloniidae

Current identification/main database link: Palaeotetrapyle muelleri Dumitrica 1988


Original Description

Mature skeleton with two complete systems of widely spaced girdles, the third, when present, being represented by only S3a and sometimes an incipient stage of S3b (Pl. 5, fig. 5, 6). All girdles elliptical except for S2b which is slightly oval, with the narrower end towards the frontal part (Pl. 5, fig. 6). The eight diagonal beams prolonged on the outside into long, stout conical spines. Generally the space of the gates is completely empty. In a few specimens (Pl. 5, figs. 5-6, 14-16) there are one or two internal rays connecting the vaults of S2a with those of S3a. Surface of shell smooth or with rare small spines, especially on the external girdles. Pores rounded, generally of irregular size and arrangement.

(based on 15 specimens): Diameter of microsphere 12,5µm, length of S1b 22,5µm, of S1c 32,5µm, of S2c 100-130µm, of S3a 111-175µm, commonly 130-150µm.

Etymology:
for the great German zoologist Johannes Müller who described the first pyloniacean species known in the literature.

Editors' Notes
Superficially this species resembles strikingly the Quaternary species Tetrapyle octacantha Müller. This resemblance is the more curious as the two species occur at the two extremities of the stratigraphic range of the family Pyloniidae and belong to two subfamilies.

References:

Dumitrica, P. (1988). New families and subfamilies of Pyloniacea (Radiolaria). Revue de Micropaléontologie. 31(3): 178-195. gs


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Palaeotetrapyle muelleri compiled by the radiolaria@mikrotax project team viewed: 19-5-2026

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Short stable page link: https://mikrotax.org/radiolaria/index.php?id=251937 Go to Archive.is to create a permanent copy of this page - citation notes



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