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    Paleobiogeography of the Macluritidae (Ordovician-Gastropoda)
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    The recent description of the Tremadocian halkieriid-like stem aculiferan, Calvapilosa kroegeri , could shed new light on some enigmatic Ordovician fossils known only by their disarticulated plates. Specifically, Conchopeltis alternata could be interpreted as a plate of sclerite-bearing stem aculiferan. Comparison is based on a similarity of conchs and reinterpretation of Conchopeltis tentacles as sclerites. This is a highly speculative idea, nevertheless, I think it may have some merit and ignite a discussion, but a reevaluation of Conchopeltis and some shelly taxa, like Scenella , is required.
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    Íàñòîÿùàÿ ñòàòüÿ ïîñâÿùåíà àêòóàëüíûì ïðîáëåìàì -ãëîáàëüíîé ïàëåîãåîãðàôèè è ïàëåîáèîãåîãðàôèè â òîàðñêîì âåêå þðñêîãî ïåðèîäà.Íà îñíîâàíèè ïðîñòðàíñòâåííî-âðåìåííîãî àíàëèçà òîàðñêèõ áðàõèîïîä è ìàòåðèàëîâ ãëóáîêîâîäíîãî áóðåíèÿ ïðåäëîaeåíà íîâàÿ ìîäåëü.Óñòàíîâëåíî, ÷òî â òîàðñêîì âåêå ïàëåîãåîãðàôèÿ Çåìëè áûëà ïðåäñòàâëåíà òðåìÿ ñóïåðêîíòèíåíòàìè -Àôàëèåé, Ïàöèôèäîé è Àðàçèåé -è äâóìÿ êîíòèíåíòàìè -Ãèïåðáîðååé è Àíòàðêòèäîé, êîòîðûå áûëè ðàçäåëåíû ìåëêîâîäíûìè øåëüôîâûìè ìîðñêèìè áàññåéíàìè øèðèíîé îêîëî 2000-3000 êì, ñîîáùàþùèìèñÿ ìåaeäó ñîáîé.Âûïîëíåííûå ïàëåîðåêîíñòðóêöèè ïîêàçûâàþò, ÷òî Áîðåàëüíûé áàññåéí ñîåäèíÿëñÿ ñ Òåòè÷åñêèì áàññåéíîì ÷å
    Palaeogeography