Guzhangian

Also known as Guzhangian Stage, Guzhangian Age, Cambrian Stage 7, Cambrian Age 7

The Guzhangian is an uppermost stage of the Miaolingian Series of the Cambrian. It follows the Drumian Stage and precedes the Paibian Stage of the Furongian Series. The base is defined as the first appearance of the trilobite Lejopyge laevigata around million years ago. The Guzhangian-Paibian boundary is marked by the first appearance of the trilobite Glyptagnostus reticulatus around million years ago.

Key facts

Geologic timespan.name: Guzhangian
Geologic timespan.color: Guzhangian
Geologic timespan.time_start: 500.5
Geologic timespan.time_start_prefix: ~
Geologic timespan.time_end: 497
Geologic timespan.time_end_prefix: ~
Geologic timespan.timeline: Cambrian
Geologic timespan.name_formality: Formal
Geologic timespan.name_accept_date: 2008
Geologic timespan.former_names: Cambrian Stage 7
Geologic timespan.celestial_body: earth
Geologic timespan.usage: Global (ICS)
Geologic timespan.timescales_used: ICS Time Scale
Geologic timespan.chrono_unit: Age
Geologic timespan.strat_unit: Stage
Geologic timespan.proposed_by: Shanchi et al., 2007
Geologic timespan.timespan_formality: Formal
Geologic timespan.lower_boundary_def: FAD of the Trilobite Lejopyge laevigata

via Wikipedia infobox

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Encyclopedic overview

5 sections

Contents

GSSP
Paleogeography
Major events
References
External links

The name Guzhangian is derived from Guzhang County, Hunan Province, China.

Excerpted from Wikipedia’s “Guzhangian” article, available under the CC BY-SA 4.0 licence.

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