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| ________________________________________________________________________________________ GRAPTOLITE NET is edited by Piotr Mierzejewski, the Count of Calmont and Countess Maja A. Korwin-Kossakowska since 2002 |
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| SOME NEW MATERIAL OF ORDOVICIAN MEDUSAEGRAPTUS Lin Yao-kun Acta Palaeontologica Sinica 1984, 23, 4, 472-480 __________________________________________________________________________ |
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| "The graptolite specimens described in the present paper were collected from the upper part of the Longmendong Formation (Middle Ordovician) at Longlian and the middle part of the Taoqupo Formation (Middle and Upper Ordovician). at Yaoxian, Shaanxi. Among them, 6 new species of Medusaegraptus namely . M. hispidus, M. setaceus, M. pavonicus, M. floralis, M. divaricatus and M.? plumosus were found in association with Orthograptus longithecalis Mu et Zhang, O. pauperatus Lapworth, O. calcaratus Lapworth, Diplograptus cf. vespertinus Ruedemann and Dicellograptus forchammeni Geinitz etc., forming an assemblage which belongs to the Climacograptus geniculatus zone or Orthograptus longithecalis zone of late Middle Ordovician and probably corresponds to the Climacograptus geniculatus zone of Eastern Chilianshan in China and to the Dicranograptus clingani zone of Britain." ___________________________ See also related pages: Medusaegraptus sp. from the Silurian of Gotland, Sweden Dithecoid graptolites - a taxonomic wastebasket |