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On Upper Devonian habitats of rugose corals

100%

Rozkowska M.

Acta Palaeontologica Polonica

1980

tom 25

nr 3-4

Frasnian deposits in Poland are mostly organogenic, forming biostromes and bioherms. The latter should be considered as reefs, because they are rigid, continuous structures, elevated above the sea floor. In the Holy Cross Mts they form a chain along the Dyminy anticline. Some communities of these bioherms are preserved in situ. The fauna in biostromes is mostly redeposited a short distance from the site of life. Depositional environments changed in the uppermost Frasnian becoming more terrigenous. The lower Famennian is characterized by intercalations of marly limestones and shales containing small horn-shaped corals, blind trilobites and small bivalves. Upper Famennian depositional environments were variable. External morphology of corals, shape of their calices, ornamentation of septa and arrangement of skeletal elements reflect their habitats.

Brachymetopus McCoy (Trilobita) in the Carboniferous of Poland and U.S.S.R.

88%

Osmolska H.

Acta Palaeontologica Polonica

1968

tom 13

nr 3

Several Carboniferous representatives of Brachymetopus McCoy are described from Poland and U.S.S.R. They are: B. maccoyi maccoyi (Portlock, 1843), B. weberi n. sp., B. ouralicus sanctacrucensis n. subsp., B. moelleri parvus n. subsp., Brachymetopus n. sp. and ?Brachymetopus sp. The widely distributed species B. ouralicus (de Verneuil, 1845) is revised.

Ograniczanie wyników

2 Acta Palaeontologica Polonica

1 Osmolska H.

1 Rozkowska M.

1 1980

1 1968

Wyniki wyszukiwania

On Upper Devonian habitats of rugose corals

Brachymetopus McCoy (Trilobita) in the Carboniferous of Poland and U.S.S.R.