CATALOG OF ORIGINAL DESCRIPTIONS: Lamptonium pennatum Foreman 1973

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 -> Lamptonium -> Lamptonium pennatum
Other pages this level: L. colymbus, L. fabaeforme chaunothorax, L. fabaeforme constrictum, L. incohatum, L. obelix, L. pennatum, L. sanfilippoae

Lamptonium pennatum

Citation: Lamptonium pennatum Foreman 1973
Rank: species
Type specimens: pl.6, figs.3-5, pl.11, fig.13
Type repository: Holotype n°USNM 178806, DSDP 10-94-31(CC), K41/2. U.S. National Museum, Washington, D.C.
Described on page(s) : p.436
Family (traditional): Theoperidae
Family (modern): Theocotylidae

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Current identification/main database link: Lamptonium pennatum Foreman 1973

Original Description
Cephalis subhemispherical, with a few circular pores and pore-shaped depressions, and bearing a sturdy bladed horn. Collar stricture with six collar pores internally, not expressed externally, contour of cephalis merging with that of inflated thorax. Thoracic pores circular to subcircular, occasionally uneven or with prongs on their margin, generally regularly quincuncially arranged in longitudinal rows; surface roughened with pointed nodes. Three three-bladed wings extend outwards from the median thorax. Abdomen subcyclindrical, fragile, lamellar, with circular to elliptical pores; termination ragged.

(Based on 20 specimens) Length of cephalis and thorax, excluding horn 125-150µm; greatest width of thorax 100-140µm, width of proximal abdomen 68-80µm.

Length excluding horn 140-215 µ; of cephalothorax 115-160 µ; maximum breadth 100-155 µ. (Sanfilippo et al., 1985) Phylogeny (rw): This species is apparently a precursor of Lamptonium fabaeforme fabaeforme (?) from which it differs by the presence of wings and less elongated proximal thorax.


Foreman, H. P. (1973a). Radiolaria of Leg 10 with systematics and ranges for the families Amphipyndacidae, Artostrobiidae, and Theoperidae. Initial Reports of the Deep Sea Drilling Project. 10: 407-474. gs


Lamptonium pennatum compiled by the radiolaria@mikrotax project team viewed: 9-3-2021

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