CATALOG OF ORIGINAL DESCRIPTIONS: Lithatractus hexagonalis 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 -> L -> Lithatractus -> Lithatractus hexagonalis
Other pages this level: L. birostratus, L. carduelis, L. cirsium, L. conifer, L. conostylus, L. convallaria, L. echiniscus, L. floridus, L. fragilis, L. gamoporus, L. hederae, L. hexagonalis, L. jugatus, L. leptostylus, L. lobatus, L. miocaenica, L. nucleolus, L. nuphar, L. pachystylus, L. pierinae, L. pterosphaerus, L. rosetta, L. santaeannae, L. santaeannae pusillus, L. timmsi, L. timmsi quadrispinus

Lithatractus hexagonalis

Citation: Lithatractus hexagonalis Haeckel 1887
Rank: species
Type locality: LM13
Type age (chronostrat): [presumably Quaternary]
Type repository: No information given
Described on page(s) : p.319

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Current identification:

Original Description
Outer shell thin walled, smooth, without thorns or papillæ, with regular delicate network; the meshes hexagonal, three to four times as broad as the thin bars; ten to twelve on the half equator. Proportion of the major axis of the ellipsoid to the minor = 4: 3. Minor axis three times as large as that of the inner spherical shell; pores of the latter, small, circular. Two spines three sided pyramidal, as long as the radius of the outer shell, each as broad at its base as one mesh.

Size: Longer axis of the ellipsoidal cortical shell 0.16, shorter axis 0.12; pores 0.011, bars 0.003; diameter of the spherical medullary shell 0.04; length of the polar spines 0.07; basal breadth 0.01.

Editors' Notes
There was no illustration of this species in Haeckel (1887)
Haeckel listed Lithatractus hexagonalis under the subgeneric name Lithatractara, but did not include the subgeneric name in the species name.[comment from RadWorld database]


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


Lithatractus hexagonalis compiled by the radiolaria@mikrotax project team viewed: 20-4-2021

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