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The Late Cambrian eocrinoid Cambrocrinus

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Dzik J., Orlowski S.

Acta Palaeontologica Polonica

1993

tom 38

nr 1-2

21-34

Morphology of the stem in Cambrocrinus regularis Orłowski 1968 from the early Late Cambrian of the Holy Cross Mts, with only one type of columnals in its proximal conical part but with well developed marginal fulcra connecting them alternately in pairs, places it in between the Middle Cambrian Acadocrinus and Late Cambrian Ridersia. In the presence of thecal ribbing with ribs radiating toward plate corners, which is definitely not homologous to the ribbing of Ridersia, Macrocystella, and later cystoids, it departs from the main eocrinoid lineage leading to the rhombiferans. A new family Cambrocrinidae is therefore proposed to include Cambrocrinus and Eocystites.

Ograniczanie wyników

1 Acta Palaeontologica Polonica

1 Dzik J.

1 Orlowski S.

1 1993

Wyniki wyszukiwania

The Late Cambrian eocrinoid Cambrocrinus