radiolaria - rads_cat - Zygocircus pentagonus

CATALOG OF ORIGINAL DESCRIPTIONS: Zygocircus pentagonus Haeckel 1887

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 -> Z -> Zygocircus -> Zygocircus pentagonus
Other pages this level: Z. acacia, Z. acanthophorus, Z. archicircus, Z. buetschli, Z. capulosus, Z. cimelium, Z. dodecanthus, Z. hexagonus, Z. longispinus, Z. pentagonus, Z. piscicaudatus, Z. polygonus, Z. productus, Z. productus abnormis, Z. productus tricarinatus, Z. rhombicus, Z. sagittalis, Z. tetragonus, Z. trigonus, Z. triquetrus

Zygocircus pentagonus

Citation: Zygocircus pentagonus Haeckel 1887
Rank: species
Type specimens: pl.81, fig.8
Type repository: No information given
Described on page(s) : p.946
Family (traditional): Plagiacanthidae
Family (modern): Stephaniidae

Current identification:

Original Description
Gate roundish pentagonal. Ring very thick (about as thick as the radius of the gate), irregularly pentagonal, with prominent sagittal edge. On both sides of the latter arise at the five corners five pairs of short simple irregularly curved spines. The four ventral spines are larger than the four dorsal, and the two basal spines larger than the eight former, forked. (In fig. 8 the basal spines are turned upwards.)

Diameter of the gate 0.07; length of the spines 0.04 to 0.06.

Editors' Notes
Stratigraphic information for LM21 from Riedel, 1959, p.287.


Haeckel, E (1887). Report on the Radiolaria collected by H.M.S. Challenger during the years 1873-1876. Report on the Scientific Results of the Voyage of H.M.S. Challenger during the year 1873-1876, Zoology. 18: 1-1803. gs

Riedel, W. R. (1959). Oligocene and Lower Miocene Radiolaria in tropical Pacific sediments. Micropaleontology. 5(3): 285-302. gs


Zygocircus pentagonus compiled by the radiolaria@mikrotax project team viewed: 29-9-2021

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