Early Ordovician chitinozoa from Spitsbergen
1980; Taylor & Francis; Volume: 4; Issue: 1 Linguagem: Inglês
10.1080/01916122.1980.9989198
ISSN1558-9188
Autores Tópico(s)Geochemistry and Elemental Analysis
ResumoAbstract Five chitinozoan species, Conochitina exilisn. sp., C. kryos n. sp., C. poumoti Combaz & Peniguel 1972, Lagenochitina boja n. sp., and L, esthonica Eisenack 1955, are described from the Ordovician (Arenig‐? Llanvirn) Valhallfonna Formation at Ny Fries‐land, Spitsbergen, using scanning electron microscopy. Morphological variation within species includes substantial variability in length. Both species of Lagenochitina possess a prosome and an operculum. The distribution of species seems to be facie s dependent, and varies in accordance with trilobite faunas. Abundance of chitinozoans and numbers of species are low compared with other recorded occurrences. The distribution of species is compared with that in faunas from Estonia, Sweden, England, Western Australia, and Eastern New York.
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