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.
|Pullenia lillisi Church 1941|
|Pullenia sphaeroides var. obliquiloculata Parker & Jones|
= Pulleniatina obliquiloculata
The shell of Pullenia has a globose form, the distance between its two poles being nearly or quite as great as the diameter of the spire. It is formed of a series of segments following one another in a symmetrical or nautiloid spiral, the number of these segments in each turn of the spire being usually four or five; each whorl is normally invested by that which succeeds it, the chambers of the latter being prolonged on either side to the centre of the spire; and the last chamber is usually large, occupying about one third of the lateral aspect of the spire. The septal plane is a narrow crescent; and the aperture is a very elongated fissure, extending almost from one point of that crescent to the other. The segments are in general but slightly convex, without any considerable depressions at their junctions; but sometimes they are turgid or vesicular, and obliquely coiled, like the chambers of Globigerina; and it may then happen that they do not so far extend themselves over the preceding whorl as to conceal it, so that the whole spire remains visible . These minute shells are extremely glassy in their texture, and their pores are fine. They are among the smallest Polythalamia at present known; their diameter averaging 1-50 th and never exceeding 1/30 th of an inch.
Extra details from original publication
Pullenia compiled by the pforams@mikrotax project team viewed: 3-12-2022
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