Some Jurassic holothurian sclerites from the High-Tatric Series of the Tatra Mts., Poland

Abstract

In the present paper the first find of the holothurian sclerites in the Jurassic of the Tatra Mts. is described. Some mistakes in the determinations of species resulted from different states of preservation of sclerites caused by a kind of maceration, a preparation from rocks with different compactness, a different contents of calcium carbonate, and recristalization is considered.