A possible Revueltosaurus-for example creature is present about Wolfville Development (Carnian; Sues & Olsen, 2015 ) away from Nova Scotia

A possible Revueltosaurus-for example creature is present about Wolfville Development (Carnian; Sues & Olsen, 2015 ) away from Nova Scotia

six.dos.step 3 Almost every other Revueltosaurus-such as for instance taxa

To start with known an ornithischian dinosaur (Galton, 1983 ), Irmis, Parker, mais aussi al. ( 2007 ) debated that NSM 004 Girl , a beneficial posterior portion of a left maxilla that have most of a enamel in a keen alveolus, shares loads of reputation states with Roentgen. callenderi in dental and you will maxillary morphology in addition to a strong ridge along side ventral margin of the antorbital fossa, the new really-set-up buccal emargination of your enamel row inside the ventral view, and you will an effective denticled enamel top without having a basal asymmetrical lump (Irmis, Parker, ainsi que al., 2007 ). A keen ilium regarding the Wolfville Development (NSM 012 Gf ) is quite similar to that of R. callenderi for the which have an enthusiastic anterior procedure of the newest iliac blade one to cannot continue anteriorly beyond the anterior the amount of your own pubic peduncle possesses a broad, game dorsal margin into the iliac blade. That it function along with helps the current presence of a Revueltosaurus-such as for instance taxon from the creation (Sues & Olsen, 2015 ).

six.step 3 Biostratigraphic incidents and implications

Roentgen. callenderi has only come registered out-of two parts, the sort locality on the Bull Canyon Creation (Dockum Group) away from east The newest Mexico (Take a look, 1989 ; Take a look mais aussi al., 2005 ) as well as the Chinle Development at the Petrified Forest Federal Playground (Padian, 1990 ; Beuhler mais aussi al., 2001 ; Parker ainsi que al., 2005 ; Atchley et al., 2013 ; Contour 1b). During the second area, ahead of looking for coupon specimens of the taxon on uppermost Bluish Mesa User and you can middle Sonsela Member, R. callenderi is considered occur in a limited stratigraphic assortment in the the lower-middle Petrified Tree User (Beuhler et al., 2001 ; Look, 2001 ; Parker & ) argued one R. callenderi is actually out-of biochronological utility. In both the fresh new North american country type locality and you may Decorated Wasteland localities for the northern PEFO, Roentgen. callenderi cooccurs into aetosaur T. coccinarum and you can mystriosuchine (= pseudopalatine) leptosuchomorph phytosaurs, taxa which were used since index taxa into Revueltian holochronozone (Lucas & Appear, 1993 ; ) debated one to given that from the PEFO R. callenderi is actually located only when you look at the a certain facies (blue paleosols) during the an individual stratigraphic level (just over the Coated Wasteland step 3 Sandstone), these particular events did not depict the true stratigraphic variety of the new taxon and you will as an alternative mirrored a maintenance prejudice. After that breakthroughs of R. callenderi topic on Owl Stone Member (Gordon bgclive, kimin seni Г¶deymeden sevdiДџini nasД±l gГ¶rГјrsГјn? mais aussi al., 2020 ; Whatley et al., 2013 ) and you can Sonsela User (Atchley mais aussi al., 2013 ) supporting so it theory, and these new specimens show that at the very least from the PEFO, the newest stratigraphic set of Roentgen. callenderi runs for the underlying Adamanian holochronozone. Its lack of R. callenderi at the other penecontemporaneous sites from the American Southwest try puzzling, eg offered exactly how abundant it is during the internet sites in which they happen. For example, brand new vertebrate assemblage of your Petrified Forest Member at the Ghost Farm from inside the north The fresh Mexico is actually geographically advanced between your kind of locality out of Roentgen. callenderi and you will PEFO, offers the newest presence a number of Revueltian list taxa (Irmis, Nesbitt, et al., 2007 ; Whiteside mais aussi al., 2015 ), possesses perfect age restrictions that demonstrate they overlaps with time to your down Petrified Forest Associate in the PEFO (Irmis ainsi que al., 2011 ; Rasmussen et al., 2020 ). There’s no noticeable taphonomic reason it well-sampled and you will diverse assemblage cannot manage Revueltosaurus, since it include sets from short-bodied drepanosaurs to highest-bodied phytosaurs and aetosaurs. Similarly, it’s curious one R. callenderi wasn’t bought at almost every other Bull Canyon Creation internet or perhaps in comparable strata inside the west Colorado (age.g., Lehman & Chatterjee, 2005 ; ).

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