High-density populations of the Triassic ophiuroid Aspiduriella similis (ECK) from the Holy Cross Mountains (central Poland): a preliminary report

by Mariusz A. Salamon, Sosnowiec

SALAMON, M.A. (2004): High-density populations of the Triassic ophiuroid Aspiduriella similis (ECK) from the Holy Cross Mountains (central Poland): a preliminary report. Freiberger Forschungshefte, C 502: Paläontologie, Stratigraphie, Fazies (12): 1-14; Freiberg.

Abstract

The benthic ophiuroid Aspiduriella similis (ECK) forms widely distributed, dense concentrations in the Pelsonian part of the Triassic Lukowa Beds of the Holy Cross Mountains. Within the described deposits population densities vary from a few to even some hundreds of specimens per square meter. Measurements of the central disks of analysed specimens from the Lukowa Beds show some distinct size modifications. It was found that the size tends to decrease with increasing distance from the East-Carphatian Gate.

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