In the geological timescale, the Llandovery Epoch (from 443.8 ± 1.5 million years ago to 433.4 ± 0.8 million years ago) occurred at the beginning of the...
13 KB (1,218 words) - 14:54, 26 June 2024
the Wenlockian) is the second epoch of the Silurian. It is preceded by the Llandovery Epoch and followed by the Ludlow Epoch. Radiometric dates constrain...
6 KB (389 words) - 19:35, 21 October 2022
work here resulted in the name "Llandovery" being given to rocks of a certain age across the world. The Llandovery epoch is the earliest in the Silurian...
14 KB (1,612 words) - 21:53, 18 July 2024
Placoderm (category Llandovery first appearances)
identifiable placoderms appear in the fossil record during the late Llandovery epoch of the early Silurian. They eventually outcompeted the previously dominant...
42 KB (4,291 words) - 03:36, 23 May 2024
"acanthodian" stem-chondrichthyans from the lower Silurian (late Aeronian, Llandovery Epoch) of China around 439 million years old, making it currently the oldest...
2 KB (159 words) - 12:21, 11 June 2024
Telychian (category Llandovery epoch)
geologic timescale, the Telychian is the third and final age of the Llandovery Epoch of the Silurian Period of the Paleozoic Era of the Phanerozoic Eon...
5 KB (314 words) - 16:21, 26 June 2024
In the geologic timescale, the Přídolí Epoch (Czech pronunciation: [ˈpr̝̊iːdoliː]) is the uppermost subdivision of the Silurian Period, dated at between...
6 KB (411 words) - 17:26, 26 June 2024
fish known from the Patrick Burn Formation in Scotland, dating to the Llandovery epoch of the Early Silurian period. Long thought of as a "basal anaspid,"...
5 KB (532 words) - 21:15, 24 January 2024
Rhuddanian (category Llandovery epoch)
the Rhuddanian is the first age of the Silurian Period and of the Llandovery Epoch. The Silurian is in the Paleozoic Era of the Phanerozoic Eon. The Rhuddanian...
5 KB (352 words) - 17:47, 8 June 2024
appearing during the Late Llandovery epoch (around 432 million years ago) and being extinct by the end of the Pridoli epoch. Eurypterus was also restricted...
92 KB (10,206 words) - 22:55, 23 May 2024
punctatum, known from the Ludlow epoch of England, and the smallest being C. libertyi, known from the Late Llandovery epoch of Canada. Though no other species...
28 KB (3,262 words) - 10:01, 22 March 2024
terrestrial sediments filled the basin. Reef growth started in the Llandovery Epoch, when the sea was 50 to 100 m (160 to 330 ft), and reefs continued...
98 KB (7,615 words) - 10:48, 7 July 2024
may venture to follow. At Siccar Point, during the lower Silurian Llandovery epoch around 435 million years ago, thin beds of fine-grained mudstone were...
16 KB (1,782 words) - 05:48, 4 April 2024
New Zealand geologic time scale (redirect from Wanganui (epoch))
their own systems of dividing geologic time into epochs and faunal stages. In New Zealand, these epochs and stages use local place names (mainly Māori in...
16 KB (757 words) - 00:30, 11 March 2024
with considerable erosion before the deposition of sediments in the Llandovery Epoch of the Silurian (444–443 Ma). There was no break in sediments in the...
62 KB (7,489 words) - 17:03, 15 July 2024
Aeronian (category Llandovery epoch)
In the geologic timescale, the Aeronian is an age of the Llandovery Epoch of the Silurian Period of the Paleozoic Era of the Phanerozoic Eon that began...
6 KB (410 words) - 19:36, 16 April 2024
kokomoensis, the type species, from the Early Pridoli epoch of Indiana; O. pumilus, from the Early Llandovery epoch of Illinois, both from the United States; and...
39 KB (4,195 words) - 12:17, 25 January 2024
In the geological timescale, the Ludlow Epoch (from 427.4 ± 0.5 million years ago to 423.0 ± 2.3 million years ago) occurred during the Silurian Period...
4 KB (228 words) - 14:53, 26 June 2024
the latter half of the Llandovery epoch of the Silurian, about 436 million years ago. During the transition from the Llandovery to the Wenlock, the Eugaleaspids...
14 KB (1,295 words) - 05:05, 20 July 2024
between the Ordovician and Silurian periods, and marks the base of the Llandovery epoch, on the geologic time scale. Dob's Linn was ratified as the GSSP by...
7 KB (670 words) - 10:25, 8 April 2022
sulfide ore deposit is located at the border of the Ordovician to the Llandovery epoch. The ore is covered by an overlying layer of volcanic rhyolites. The...
16 KB (1,899 words) - 18:37, 7 July 2024
Acacus Sandstone (category Llandovery epoch)
southwestern Libya. The unit preserves fossils dating back to the Llandovery epoch of the early Silurian period. The formation has provided the following...
3 KB (129 words) - 17:23, 3 July 2024
Geologic time scale (redirect from Epoch (geology))
numeric representation of an intangible property (time). Eon, era, period, epoch, subepoch, age, and subage are the hierarchical geochronologic units. Geochronometry...
172 KB (9,499 words) - 07:05, 18 July 2024
Birmingham's development. A new species of Lower Silurian (middle Llandovery epoch) phacopsid trilobite, Acaste birminghamensis, was first collected from...
4 KB (338 words) - 17:49, 16 August 2023
They flourished between the Late Llandovery epoch (around 432 million years ago) to sometime during the Přídolí epoch (418.1 million years ago) of the...
54 KB (5,349 words) - 23:01, 28 March 2024
composed of sand-dominant turbidites (lower Ordovician to at least the Llandovery Epoch of the Silurian) which are conformably underlain by the Ribband and...
8 KB (959 words) - 09:42, 2 June 2024
mudstone turbidites laid down in the marine Welsh Basin during the Llandovery epoch. British Geological Survey 2010. 1:50,000 scale geological map sheets...
2 KB (153 words) - 18:36, 12 October 2022
Conodont biostratigraphy (section Llandovery)
early Sandbian Bromide Formation, in Oklahoma, United States. The Llandovery epoch lasted from 443.8 ± 1.5 to 433.4 ± 2.8 mya, and is subdivided into...
20 KB (2,203 words) - 10:13, 15 April 2024
China, and Australia. As of 2019[update], Eohostimella, dated to the Llandovery epoch (444 to 433 million years ago), is one of the earliest fossils that...
25 KB (2,826 words) - 15:14, 30 June 2024
Actinostromatida, may have originated in the Late Ordovician or the Llandovery Epoch (early Silurian). The precise timing depends on the status of Plumatalinia...
45 KB (4,761 words) - 13:32, 26 January 2024