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![]() | This article is written in American English, which has its own spelling conventions (color, defense, traveled) and some terms that are used in it may be different or absent from other varieties of English. According to the relevant style guide, this should not be changed without broad consensus. |
![]() | Allosaurus is a featured article; it (or a previous version of it) has been identified as one of the best articles produced by the Wikipedia community. Even so, if you can update or improve it, please do so. | |||||||||
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This page has archives. Sections older than 90 days may be automatically archived by Lowercase sigmabot III when more than 3 sections are present. |
This is according to an article named "D. J. Chure, R. Litwin, S. T. Hasiotis, E. Evanoff, and K. Carpenter. 2006. The fauna and flora of the Morrison Formation: 2006. In J. R. Foster, S. G. Lucas (eds.), Paleontology and Geology of the Upper Jurassic Morrison Formation. New Mexico Museum of Natural History and Science Bulletin". I got access to it a few days ago.-- Bubblesorg ( talk) 16:05, 20 February 2020 (UTC)
This Dutch museum appears to feature a pre-2015 version of Steveoc's Allosaurus reconstruction. Lythronaxargestes ( talk | contribs) 21:25, 18 July 2021 (UTC)
On this page, the temporal range for the genus Allosaurus is currently set to 155–145 Ma.
Allosaurus jimmadseni was officially described in 2020 by Chure & Loewen ( https://doi.org/10.7717/peerj.7803) and in their open access paper, the authors referred the new species to the following age:
"Age — Allosaurus jimmadseni was found in the Salt Wash Member of the Morrison Formation and its lateral equivalents. The Tidwell Member near the base of the Morrison (below the Salt Wash Member) produced a date of 154.82 ± 0.58 Ma (RAIN-1325-4+4 of Kowallis et al. (1998)) and a date of 150.18 ± 0.51 Ma (LCM-1 of Kowallis et al. (1998)) was recovered at the base of the overlying Brushy Basin Member. These two dates constrain the Salt Wash Member between them. These single-crystal, laser-fusion 40Ar/39Ar ages on sanidine crystals were recalibrated (Irmis, Nesbitt & Sues, 2013) to 157.32 ± 0.61 Ma (RAIN-1325-4+4 of Kowallis et al. (1998)) and a date of 152.77 ± 0.3 Ma following the Monte Carlo method of Renne et al. (2010). This places it in the Kimmeridgian Age of the Late Jurassic Epoch (Walker et al., 2012)."
So if Allosaurus jimmadseni is aged 157.32 Ma to 152.77 Ma, then the start of the temporal range for the genus Allosaurus on Wikipedia should be adjusted to 157.32 (or 157) Ma.
So, 157–145 Ma.
Thanks for considering. AlexanderDecommere ( talk) 08:40, 8 November 2023 (UTC)
![]() | This ![]() It is of interest to the following WikiProjects: | |||||||||||||||||||||||||||||||||||||||||||||||
|
![]() | This article is written in American English, which has its own spelling conventions (color, defense, traveled) and some terms that are used in it may be different or absent from other varieties of English. According to the relevant style guide, this should not be changed without broad consensus. |
![]() | Allosaurus is a featured article; it (or a previous version of it) has been identified as one of the best articles produced by the Wikipedia community. Even so, if you can update or improve it, please do so. | |||||||||
![]() | This article appeared on Wikipedia's Main Page as Today's featured article on August 26, 2010. | |||||||||
|
This page has archives. Sections older than 90 days may be automatically archived by Lowercase sigmabot III when more than 3 sections are present. |
This is according to an article named "D. J. Chure, R. Litwin, S. T. Hasiotis, E. Evanoff, and K. Carpenter. 2006. The fauna and flora of the Morrison Formation: 2006. In J. R. Foster, S. G. Lucas (eds.), Paleontology and Geology of the Upper Jurassic Morrison Formation. New Mexico Museum of Natural History and Science Bulletin". I got access to it a few days ago.-- Bubblesorg ( talk) 16:05, 20 February 2020 (UTC)
This Dutch museum appears to feature a pre-2015 version of Steveoc's Allosaurus reconstruction. Lythronaxargestes ( talk | contribs) 21:25, 18 July 2021 (UTC)
On this page, the temporal range for the genus Allosaurus is currently set to 155–145 Ma.
Allosaurus jimmadseni was officially described in 2020 by Chure & Loewen ( https://doi.org/10.7717/peerj.7803) and in their open access paper, the authors referred the new species to the following age:
"Age — Allosaurus jimmadseni was found in the Salt Wash Member of the Morrison Formation and its lateral equivalents. The Tidwell Member near the base of the Morrison (below the Salt Wash Member) produced a date of 154.82 ± 0.58 Ma (RAIN-1325-4+4 of Kowallis et al. (1998)) and a date of 150.18 ± 0.51 Ma (LCM-1 of Kowallis et al. (1998)) was recovered at the base of the overlying Brushy Basin Member. These two dates constrain the Salt Wash Member between them. These single-crystal, laser-fusion 40Ar/39Ar ages on sanidine crystals were recalibrated (Irmis, Nesbitt & Sues, 2013) to 157.32 ± 0.61 Ma (RAIN-1325-4+4 of Kowallis et al. (1998)) and a date of 152.77 ± 0.3 Ma following the Monte Carlo method of Renne et al. (2010). This places it in the Kimmeridgian Age of the Late Jurassic Epoch (Walker et al., 2012)."
So if Allosaurus jimmadseni is aged 157.32 Ma to 152.77 Ma, then the start of the temporal range for the genus Allosaurus on Wikipedia should be adjusted to 157.32 (or 157) Ma.
So, 157–145 Ma.
Thanks for considering. AlexanderDecommere ( talk) 08:40, 8 November 2023 (UTC)