On the relationship between Rugosa and Scleractinia (summary)

• Autorzy: Olivier, Jr. W.A.
• Języki publikacji: EN

Abstrakty

EN

Mesozoic-Cenozoic scleractinian corals were not derived by descent from late Paleozoic rugose corals. Rather, they probably originated from a group of Paleozoic sea anemones that survived into the Mesozoic after the extinction of the Rugosa at the end of the Paleozoic. This conclusion is based on three arguments: 1. all scleractinians have cyclic septal insertion in contrast to the serial insertion of rugosans; there are no intermediates; 2. scleractinians have aragonite skeletons; those of rugosans are calcite; 3. there are no Lower Triassic corals. It is unlikely that two important characters (points 1 and 2) would change so drastically during the only stage in the history of the corals in which no corals are known (point 3).

• Wydawca: -
• Czasopismo: Acta Palaeontologica Polonica
• Rocznik: 1980
• Tom: 25
• Numer: 3-4
• Opis fizyczny: p.395-402,fig.,ref

Twórcy

autor

Olivier, Jr. W.A.

• U. S. Geological Survey, E-305 Natural History Bldg, Smithsonian Institution~Washington D. C. 20560, USA

Bibliografia

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