Jurassic rock strata in the cliffs at East Quantoxhead, near the Sinemurian golden spike.
Chronology
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Mesozoic
T
Jurassic
K
LT
Early
Middle
Late
EK
Rhaetian
Hettangian
Sinemurian
Pliensbachian
Toarcian
Aalenian
Bajocian
Bathonian
Callovian
Oxfordian
Kimmeridgian
Tithonian
Berriasian
←
Triassic–Jurassic extinction event
Subdivision of the Jurassic according to the ICS, as of 2022.[1] Vertical axis scale: millions of years ago.
Etymology
Name formality
Formal
Usage information
Celestial body
Earth
Regional usage
Global (ICS)
Time scale(s) used
ICS Time Scale
Definition
Chronological unit
Age
Stratigraphic unit
Stage
Time span formality
Formal
Lower boundary definition
FAD of the Ammonites Vermiceras quantoxense and Vermiceras palmeri
Lower boundary GSSP
East Quantoxhead, West Somerset, England, UK 51°11′27″N3°14′11″W / 51.1909°N 3.2364°W / 51.1909; -3.2364
Lower GSSP ratified
2000[2]
Upper boundary definition
FAD of the Ammonite species Bifericeras donovani and genus Apoderoceras
Upper boundary GSSP
Robin Hood's Bay, Yorkshire, England, UK 54°24′25″N0°29′51″W / 54.4069°N 0.4975°W / 54.4069; -0.4975
Upper GSSP ratified
March 2005[3]
In the geologic timescale, the Sinemurian is an age and stage in the Early or Lower Jurassic Epoch or Series. It spans the time between 199.5 ±0.3 Ma and 192.9 ±0.3 Ma (million years ago).[4] The Sinemurian is preceded by the Hettangian and is followed by the Pliensbachian.[5]
In Europe the Sinemurian age, together with the Hettangian age, saw the deposition of the lower Lias, in Great Britain known as the Blue Lias.
^"International Chronostratigraphic Chart" (PDF). International Commission on Stratigraphy.
^Bloos, Gert; Page, Kevin (March 2002). "Global Stratotype Section and Point for base of the Sinemurian Stage (Lower Jurassic)". Episodes. 25 (1): 22–28. doi:10.18814/epiiugs/2002/v25i1/003. Retrieved 23 December 2020.
^Meister, Christian; Aberhan, Martin; Blau, Joachim; Dommergues, Jean-Louis; Feist-Burkhardt, Susanne; Hailwood, Ernie; Hart, Malcolm; Hesselbo, Stephen; Hounslow, Mark; Hylton, Mark; Martin, Nicol; Page, Kevin; Price, Greg (June 2006). "The Global Boundary Stratotype Section and Point (GSSP) for the base of the Pliensbachian Stage (Lower Jurassic), Wine Haven, Yorkshire, UK". Episodes. 29 (2): 93–106. doi:10.18814/epiiugs/2006/v29i2/003. Retrieved 23 December 2020.
^Benton, Michael J. (2012). Prehistoric Life. Edinburgh, Scotland: Dorling Kindersley. pp. 44–45. ISBN 978-0-7566-9910-9.
^For a detailed geologic timescale see Gradstein et al. (2004)
In the geologic timescale, the Sinemurian is an age and stage in the Early or Lower Jurassic Epoch or Series. It spans the time between 199.5 ±0.3 Ma and...
follows the Rhaetian (part of the Triassic Period) and is followed by the Sinemurian. In European stratigraphy the Hettangian is a part of the time span in...
near Dijon. The original definition of Sinemurian included what is now the Hettangian. The GSSP of the Sinemurian is located at a cliff face north of the...
was discovered by early paleontologist and fossil hunter Mary Anning in Sinemurian (Early Jurassic)-age rocks of the lower Lias Group in December 1823. Additional...
(Hettangian-lower Sinemurian) that progressively backstepped toward the basin margins, to more localized platform development flanking the depocenters (Sinemurian). Normal...
despite its late age Barapasaurus 1975 Kota Formation (Early Jurassic, Sinemurian to Pliensbachian) India Several individuals have been found associated...
"Saltrio hunter") is a genus of ceratosaurian dinosaur that lived during the Sinemurian stage of the Early Jurassic in what is now Italy. The type and only species...
Romilio et al. (2024) describe dinosaur tracks from the Early Jurassic (Sinemurian) Razorback Beds (Australia), representing the oldest dinosaur tracks from...
(Hettangian-Sinemurian) England, Wales Various fissure fill deposits Morganucodon heikuopengensis Young 1978 Early Jurassic (Sinemurian) Yunnan, China...
belonging to thalattosuchians have been reported from the Early Jurassic (Sinemurian) of Chile and France. However, they cannot be assigned to the group with...
currently described is Saltriovenator zanellai which is dated to the Early Sinemurian, 199-197 Ma. The origin of Ceratosauria could have been in Northern Pangea...
(2019) interpreted plates of an armored dinosaur from the Lower Jurassic (Sinemurian-Pliensbachian) Lower Kota Formation of India as fossils of a member of...
Gryphaea Temporal range: 199.600–33.900 Ma PreꞒ Ꞓ O S D C P T J K Pg N Sinemurian - Eocene Gryphaea arcuata Scientific classification Domain: Eukaryota...
September 2021). "The southernmost occurrence of Ichthyosaurus from the Sinemurian of Portugal". Fossil Record. 24 (2): 287–294. Bibcode:2021FossR..24..287S...
−145 — – Mesozoic T Jurassic K Late T Early Middle Late Early K Hettangian Sinemurian Pliensbachian Toarcian Aalenian Bajocian Bathonian Callovian Oxfordian...
and Switzerland. This Formation mostly developed in the Lower or Middle Sinemurian stage of the Lower Jurassic, where on the Lombardian basin tectonic activity...
(2019) interpreted plates of an armored dinosaur from the Lower Jurassic (Sinemurian-Pliensbachian) Lower Kota Formation of India as fossils of a member of...
fossils, especially ammonites. Its age corresponds to the Rhaetian to lower Sinemurian stages of the geological timescale, thus fully including the Hettangian...
some of these are likely synonyms, which span from the Early Jurassic (Sinemurian) to Paleocene (Danian). Most species are only known from isolated teeth...
The Precipice Sandstone an Early Jurassic (Sinemurian to early Pliensbachian, with possible Hettangian levels) geologic formation of the Surat Basin in...
early neotheropod genus Sarcosaurus from the Early Jurassic (Hettangian–Sinemurian) of central England". Zoological Journal of the Linnean Society. 191 (1):...
Global Information