A potential Revueltosaurus-like creature exists regarding Wolfville Development (Carnian; Sues & Olsen, 2015 ) away from Nova Scotia

A potential Revueltosaurus-like creature exists regarding Wolfville Development (Carnian; Sues & Olsen, 2015 ) away from Nova Scotia

6.dos.step 3 Almost every other Revueltosaurus-including taxa

To begin with regarded an ornithischian dinosaur (Galton, 1983 ), Irmis, Parker, et al. ( 2007 ) debated you to definitely NSM 004 Girlfriend , an excellent posterior portion of a remaining maxilla with a lot of an excellent enamel in the an enthusiastic alveolus, shares an abundance of reputation says having R. callenderi in both dental and you can maxillary morphology along with a robust ridge over the ventral margin of your own antorbital fossa, the newest really-build buccal emargination of your own enamel row during the ventral examine, and an effective denticled tooth crown without having a beneficial basal asymmetrical swelling (Irmis, Parker, ainsi que al., 2007 ). An enthusiastic ilium in the Wolfville Development (NSM 012 Girl ) is quite like Roentgen. callenderi in that have an anterior means of brand new iliac knife you to doesn’t expand anteriorly outside the anterior the amount of pubic peduncle and has now an over-all, rounded dorsal margin with the iliac knife. So it element including aids the presence of a Revueltosaurus-particularly taxon regarding the development (Sues & Olsen, 2015 ).

6.step 3 Biostratigraphic occurrences and you can ramifications

R. callenderi only has become filed out-of one or two elements, the sort area on the Bull Canyon Creation (Dockum Class) out-of eastern The Mexico (Take a look, 1989 ; See et al., 2005 ) therefore the Chinle Development during the Petrified Tree National Park (Padian, 1990 ; Beuhler mais aussi al., 2001 ; Parker ainsi que al., 2005 ; Atchley et al., 2013 ; Profile 1b). From the second location, before trying to find discount specimens of taxon throughout the highest Blue Mesa Affiliate and middle Sonsela Representative, Roentgen. callenderi are said to take place in a restricted stratigraphic assortment for the the reduced-middle Petrified Tree Affiliate (Beuhler mais aussi al., 2001 ; Have a look, 2001 ; Parker & ) argued you to R. callenderi try out-of biochronological energy. In both the latest North american country kind of locality and you can Painted Wilderness localities in the north PEFO, R. callenderi cooccurs towards aetosaur T. coccinarum and you may mystriosuchine (= pseudopalatine) leptosuchomorph phytosaurs, taxa that have been put while the index taxa on the Revueltian holochronozone (Lucas & See, 1993 ; ) argued you to definitely just like the during the PEFO Roentgen. callenderi was receive simply into the a specific facies (bluish paleosols) at the just one stratigraphic top (right above the Coated Desert step 3 Sandstone), why these situations don’t represent the true stratigraphic directory of the newest taxon and you can rather reflected an upkeep prejudice. After that findings out-of Roentgen. callenderi material from the Owl Rock Member (Gordon et al., 2020 ; Whatley et al., 2013 ) and Sonsela Associate (Atchley mais aussi al., 2013 ) aids so it theory, and these the specimens show that at the least on PEFO, the brand new stratigraphic range of Roentgen. callenderi offers on hidden Adamanian holochronozone. Its lack of R. callenderi from the most other penecontemporaneous websites regarding American Southwestern are puzzling, such provided exactly how abundant it is on internet in which they happen. Such as https://datingranking.net/tr/colombian-cupid-inceleme/, the fresh new vertebrate assemblage of your Petrified Forest User on Ghost Farm from inside the northern This new Mexico is actually geographically intermediate within particular locality out-of Roentgen. callenderi and PEFO, offers the latest exposure numerous Revueltian directory taxa (Irmis, Nesbitt, mais aussi al., 2007 ; Whiteside et al., 2015 ), features right years limits that demonstrate it overlaps over the years towards the lower Petrified Forest Representative from the PEFO (Irmis mais aussi al., 2011 ; Rasmussen mais aussi al., 2020 ). There isn’t any noticeable taphonomic reasons why which better-tested and diverse assemblage should not manage Revueltosaurus, because includes everything from quick-bodied drepanosaurs so you can highest-bodied phytosaurs and you will aetosaurs. Also, it’s interested that Roentgen. callenderi wasn’t found at most other Bull Canyon Development sites or perhaps in similar strata in the western Tx (e.g., Lehman & Chatterjee, 2005 ; ).

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