Definition of Darriwilian. Meaning of Darriwilian. Synonyms of Darriwilian

- The Darriwilian is the upper stage of the Middle Ordovician. It is preceded by the Dapingian and succeeded by the Upper Ordovician Sandbian Stage. The...
- Arenig continues until the early Darriwilian, subsuming the Dapingian. The Llanvirn occupies the rest of the Darriwilian, and terminates with it at the...
- volcanic rocks that were deposited 466 to 465 million years ago during the Darriwilian stage of the Middle Ordovician epoch. Rhyolite flows, breccias and hyaloclastics...
- youngae, have been discovered in deposits of the Middle Ordovician period (Darriwilian epoch) in Iowa, in the United States. The name of the genus is derived...
- (Emsian)  Morocco Neoillaenus Gen. et comb. nov Valid Krylov Ordovician (Darriwilian–Katian)  Estonia  Russia  Sweden The type species is "Illaenus" excellens...
- conodonts. 445.2 ± 1.4 * Katian 453 ± 0.7 * Sandbian 458.4 ± 0.9 * Middle Darriwilian 467.3 ± 1.1 * Dapingian 470 ± 1.4 * Lower/Early Floian (formerly Arenig)...
- recognized as a longer, more gradual event, which began as early as the Darriwilian, and possibly even the Floian. Evidence of this glaciation can be seen...
- & Sugiyama, 1930 [Middle Ordovician (Darriwilian)] Thamnobeatricea Raymond, 1931 [Middle Ordovician (Darriwilian) – Upper Ordovician (Katian)] Family...
- extinct group of aquatic arthropods. Fossils have been registered from the Darriwilian age of the Middle Ordovician period, as early as 467.3 million years...
- Tetragraptidae is an extinct family of graptolites from the Floian to Darriwilian epochs of the Ordovician Period. List of genera from Maletz (2014): †Corymbograptus...