THE CAMBRIAN EVOLUTIONARY STAGES OF AGNOSTIDS

dc.contributor.author	Naimark E.B.
dc.contributor.author	Markov A.V.
dc.date.accessioned	2021-02-20T08:18:58Z
dc.date.available	2021-02-20T08:18:58Z
dc.date.issued	2001
dc.identifier	https://elibrary.ru/item.asp?id=13376948
dc.identifier.citation	Paleontological Journal, 2001, 35, 6, 614-623
dc.identifier.issn	0031-0301
dc.identifier.uri	https://repository.geologyscience.ru/handle/123456789/25324
dc.description.abstract	The duration of the existence and geographic ranges of agnostid genera with different morphological characters are analyzed. Genera with no transglabellar furrows and/or transaxial furrows and/or smoothed axial glabellar furrow tend to have smaller geographic and stratigraphic ranges, whereas genera with two transaxial furrows on the cephalon and pygidium and/or long axis are characterized by increased ranges. The Cambrian evolution of agnostids comprises two stages differing in rates of origination and extinction, mean duration, and dominant morphology of the genera. Phases of growth, acme, and decline are distinguished within each stage.
dc.subject	Cambrian
dc.subject	Agnostids
dc.title	THE CAMBRIAN EVOLUTIONARY STAGES OF AGNOSTIDS
dc.type	Статья
dc.subject.age	Paleozoic::Cambrian	en
dc.subject.age	Палеозой::Кембрийская	ru

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