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Talk:Machairoceratops

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Latest comment: 4 years ago by Dino Soros in topic Age Error?

Age Error?

[edit]

From the section "Age" on the Wahweap Formation page: "The lower member of the Wahweap would date from ~81-80.7 Ma,...Further, The capping sandstone is closer to the Kaiparowits Formation in deposition and there would have been a gap between the upper and capping sandstone members of the Wahweap Formation. The capping sandstone would then date ~77-76.7 Ma, based on a 77 Ma date from the base of the sandstone."

This page (Machairoceratops) gives a geologic age of 80.8 ma in the infobox, which would belong to the Lower Wahweap Formation (and there is no citation given for the age "80.8 Ma" on this page) - but the paper describing Machairoceratops (cited on this page) is entitled "A New Centrosaurine Ceratopsid, Machairoceratops cronusi gen et sp. nov., from the Upper Sand Member of the Wahweap Formation (Middle Campanian), Southern Utah". This is referring to the capping sandstone member of the Wahweap Formation, which has an age range of approximately ~77-76.7 Ma.

If there's no objection, I'll going to go ahead and change the age in the Machairoceratops infobox to ~77-76.7 Ma. --Dino Soros (talk) 08:48, 31 January 2022 (UTC)Reply