Trilobites of the Upper Cambrian Ptychaspid Biomere Wilberns Formation, Central Texas
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چکیده
منابع مشابه
Phosphatised olenid trilobites and associated fauna from the Upper Cambrian of Västergötland, Sweden
Secondarily phosphatised olenid trilobites from organic−rich limestones (orsten) in the Furongian (Upper Cambrian) of Västergötland, south−central Sweden, are described and illustrated. All trilobites originate from the Peltura scara− baeoides Zone and were collected on the western slope of Kinnekulle. Only the dorsal exoskeletons have become second− arily phosphatised, and the ventral appendag...
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ژورنال
عنوان ژورنال: Journal of Paleontology
سال: 1970
ISSN: 0022-3360,1937-2337
DOI: 10.1017/s002233600006128x