Trilobites from the Ordovician Ardwell Group of the Craighead Inlier, Girvan district, Scotland 期刊名称： Earth and Environmental Science Transactions of the Royal Society of
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作者机构： R. P. Tripp, British Museum （Natural History）, Cromwell Road,
London SW7 5BD, England.
年份： 1980年
期号： 第3期
摘要：All trilobites known from the Ardwell Group, Craighead Inlier, Girvan district are listed and frequencies recorded. Encrinuroides lapworthi n. sp. from the Sericoidea Mudstones, and Bumastoides fornax n. sp. from the Kiln Mudstones, are described. The Sericoidea Mudstones constitute a deeper w
ater interlude in the complex succession which comprises the Craighead Limestone Formation; graptolites from this horizon indicate low Dicranograptus clingani zone. The closest resemblance of the trilobite assemblage as a whole is to faunas of Trenton age in North America. The occurrence of forms allied to Boda Limestone (Ashgill) species suggests that these are long-ranging, carbonate associated, trilobite stocks.
水溶性酚醛树脂
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