CATALOG OF ORIGINAL DESCRIPTIONS: Tripospyris crassipes Clark & Campbell 1942

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 -> T -> Tripospyris -> Tripospyris crassipes
Other pages this level: T. angulata, T. bicornis, T. biloculata, T. byzantina, T. capellinii, T. capitata, T. conifera, T. cortina, T. cortiniscus, T. crassipes, T. diadema, T. diomma, T. dubia, T. eucolpos, T. furcata, T. galea, T. hexomma, T. karakumensis, T. mutinensis, T. sacramentoensis, T. semantidium, T. semantis, T. semantrum, T. tessaromma, T. triplecta, T. brevipes

Tripospyris crassipes

Citation: Tripospyris crassipes Clark & Campbell 1942
Rank: species
Type specimens: pl.9, fig.4
Type repository: University of California, Museum of Paleontology, San Francisco
Described on page(s) : p.54
Family (traditional): Trissocyclidae
Family (modern): Acanthodesmiidae

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Current identification:

Original Description
Shell definitely dipleuric, with a single median coryphal spikelike horn (broken off distally), and with three feet; shell divided by a vertical stricture into two subequal, somewhat inflated, subbemispherical lobes, the stricture separating them not deep except on the coryphal face where it deepens more than laterally; large, gatelike pores forming a single, curved line across the middle of the posterior face of the shell, freely crossing the sagittal constriction, other pores smaller, of several sizes, mostly subcircular, about seven or eight on one side of one hemisphere; framework heavy, strong, with rounded beams; wall thick; great-circle well-marked, clearly visible through the hyaline wall; feet, one odd sagittal-caudal and two paired lateral or pectoral, short, stout, blunted, divergent (all broken save one pectoral), the odd foot apparently less thick than the laterals.

Length of shell, 75.0µm; of feet, 37.5µm; breadth of shell, 87.5µm; diameter of gate-pores, 12.5µm. Distinguishing characters (rw): Tripospyris crassipes n. sp. has short, stout, blunt feet unlike the more slender ones of other species. Its status both in the genus and subgenus to which it is here assigned is perhaps doubtful, since the feet and horn are broken.

Editors' Notes
[The authors here questionably list this species under the subgeneric name Tripospyrella and include the subgeneric name in the species name.


Clark, B. L. & Campbell, A. S. (1942). Eocene radiolarian faunas from the Mt. Diablo area, California. Geological Society of America, Special Papers. 39: 1-112. gs


Tripospyris crassipes compiled by the radiolaria@mikrotax project team viewed: 14-4-2021

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