Arenigian

Arenigian

[‚a·rə′nij·ē·ən]
(geology)
A European stage including Lower Ordovician geologic time (above Tremadocian, below Llanvirnian). Also known as Skiddavian.
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References in periodicals archive ?
Conodont faunas with Lenodus variabilis in the Upper Arenigian to Lower Llanvirnian of Sweden // Acta Palaeontol.
3), and interpreted the age as "may range from early Middle Arenigian to earliest Llanvirnian", thus supporting the Arenigian brachiopod age interpretation of Neuman (1968).
Early growth stages of Arenigian Baltoscandic Orthocerida Mollusca, Cephalopoda.
Conodonts from the limestone and brachiopods from associated calcareous siltstone, together with U-Pb dating of the crystal tuff, indicate that the Nepisiguit Falls Formation is late Arenigian in age; graptolites from black shale of the Little River Formation are late Caradocian in age.
Arenigian acritarchs from the Daping section (Yangtze Gorges area, Hubei Province, Southern China) and their palaeogeographic significance.
Stratigraphical significance of the late Tremadocian and Arenigian graptolites of the Middle East Baltic area.