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View (previous 20 | next 20) (20 | 50 | 100 | 250 | 500)- 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... 9 KB (768 words) - 14:41, 13 December 2024
- Flat Landing Brook Formation rocks that were deposited 466 to 465 million years ago during the Darriwilian stage of the Middle Ordovician epoch. Rhyolite flows, breccias and hyaloclastics... 6 KB (433 words) - 05:28, 2 July 2023
Prototaxites Retallack described the new species Prototaxites honeggeri from the Darriwilian stage of the Middle Ordovician Douglas Lake Member of the Lenoir Limestone... 23 KB (2,419 words) - 19:39, 10 September 2024
Eurypterid (category Darriwilian first appearances) the order Eurypterida. The earliest known eurypterids date to the Darriwilian stage of the Ordovician period 467.3 million years ago. The group is likely... 93 KB (10,214 words) - 14:20, 7 December 2024
Stromatoporoidea Pulchrilaminids existed from the late Tremadocian stage (near the end of the Early Ordovician) up to the early Darriwilian stage (about mid-way through the Middle Ordovician)... 46 KB (4,843 words) - 19:03, 15 August 2024- Dapingian (section Regional stages) third stage of the Ordovician system and the first stage of the Middle Ordovician series. It is preceded by the Floian and succeeded by the Darriwilian. The... 20 KB (1,981 words) - 14:43, 13 December 2024
- Weston Flags Formation formation in Shropshire, England. It preserves fossils dating back to the Darriwilian stage of the Ordovician period. Earth sciences portal England portal Paleontology... 2 KB (105 words) - 09:19, 18 November 2024
- Huangnitang Village, Changshan and Point (GSSP), which marks the boundary between the Third and Darriwilian Stages of the Middle Ordovician. The GSSP was ratified by the International... 4 KB (267 words) - 20:51, 8 February 2024
Labechiida (category Darriwilian first appearances) worldwide in the mid- to upper-Darriwilian stage, near the end of the Middle Ordovician (~460 Ma). During the Darriwilian, 4 genera occur in the Chazy Group... 19 KB (1,765 words) - 22:37, 17 November 2024
New Zealand geologic time scale (redirect from Motuan (stage)) systems of dividing geologic time into epochs and faunal stages. In New Zealand, these epochs and stages use local place names (mainly Māori in origin) back... 16 KB (757 words) - 12:20, 2 September 2024
Ordovician (section British stages and ages) Floian, all of the Dapingian and the early Darriwilian. The Llanvirn corresponds to the late Darriwilian. The Caradoc covers the Sandbian and the first... 79 KB (7,814 words) - 15:10, 19 December 2024- List of Global Boundary Stratotype Sections and Points Finney (1997). "Definition of a global boundary stratotype for the Darriwilian Stage of the Ordovician System" (PDF). Episodes. 20 (3): 158–166. doi:10... 92 KB (3,932 words) - 15:08, 13 December 2024
- Discosorida Middle Ordovician (modern Darriwilian stage) followed by a decline in the Upper Ordovician (modern Sandbian and Katian stages) only to peak again in the... 5 KB (642 words) - 22:27, 5 November 2023
Douglas Lake Member (category Darriwilian) terrestrial erosion and karstification. It is not until late in the Darriwilian Stage that rises in relative sea level drowned the Douglas Lake region and... 18 KB (1,611 words) - 13:11, 13 August 2024
Alycia Stigall in which new species developed rapidly, particularly during the Darriwilian Stage about 465 million years ago. In 2020, Stigall collaborated with an... 9 KB (894 words) - 01:11, 29 July 2022
Trimerellida (present-day Kazakhstan) during the "Llandeilo" (late Darriwilian stage). By the late Sandbian and early Katian stages, many dispersed eastward to nearby regions... 12 KB (1,092 words) - 04:37, 28 September 2024- Sandbian The Sandbian is the first stage of the Upper Ordovician. It follows the Darriwilian and is succeeded by the Katian. Its lower boundary is defined as the... 6 KB (528 words) - 15:21, 13 December 2024
- Whiterock Stage Cassinian and Ibexian stages and by the Canadian Series and ICS Arenigian, overlaps with the slightly younger and newer ICS Darriwilian and is followed as... 3 KB (374 words) - 23:40, 1 October 2022
- Hirnantian (section Correlations to regional stages) The Hirnantian is the final internationally recognized stage of the Ordovician Period of the Paleozoic Era. It was of short duration, lasting about 1... 18 KB (2,073 words) - 14:55, 13 December 2024
Winneshiek Shale Shale (originally the Winneshiek Lagerstätte) is a Middle Ordovician (Darriwilian-age) geological formation in Iowa. The formation is restricted to the... 18 KB (1,574 words) - 20:05, 9 September 2024