A possible Revueltosaurus-particularly creature can be acquired on Wolfville Formation (Carnian; Sues & Olsen, 2015 ) regarding Nova Scotia

six.dos.3 Almost every other Revueltosaurus-such taxa

Originally referred to a keen ornithischian dinosaur (Galton, 1983 ), Irmis, Parker, ainsi que al. ( 2007 ) argued you to NSM 004 Girl , a great posterior percentage of a remaining maxilla having much of a beneficial enamel inside an enthusiastic alveolus, shares numerous profile claims having R. callenderi in both dental and you may maxillary morphology and an effective ridge over the ventral margin of antorbital fossa, new really-put up buccal emargination of one’s tooth row in the ventral take a look at, and an excellent denticled tooth crown without having good basal asymmetrical swelling (Irmis, Parker, et al., 2007 ). A keen ilium on Wolfville Formation (NSM 012 Girl ) is extremely like R. callenderi when you look at the that have an enthusiastic prior process of the latest iliac blade you to cannot increase anteriorly outside of the prior the total amount of pubic peduncle features a standard, game dorsal margin to your iliac blade. So it function and additionally www.datingranking.net/tr/ashley-madison-inceleme/ aids the presence of an effective Revueltosaurus-for example taxon about development (Sues & Olsen, 2015 ).

6.step 3 Biostratigraphic incidents and you may effects

Roentgen. callenderi only has been registered away from several elements, the type locality from the Bull Canyon Development (Dockum Class) regarding east The fresh Mexico (Hunt, 1989 ; Have a look mais aussi al., 2005 ) and also the Chinle Formation during the Petrified Forest Federal Park (Padian, 1990 ; Beuhler mais aussi al., 2001 ; Parker ainsi que al., 2005 ; Atchley ainsi que al., 2013 ; Figure 1b). At the second place, ahead of interested in coupon specimens of taxon about uppermost Blue Mesa Representative and you will middle Sonsela User, R. callenderi try believed to take place in a limited stratigraphic diversity for the the lower-center Petrified Forest User (Beuhler mais aussi al., 2001 ; Search, 2001 ; Parker & ) argued that Roentgen. callenderi is away from biochronological electric. In both the latest North american country particular area and Decorated Desert localities during the north PEFO, Roentgen. callenderi cooccurs to the aetosaur T. coccinarum and you may mystriosuchine (= pseudopalatine) leptosuchomorph phytosaurs, taxa that happen to be made use of since list taxa to the Revueltian holochronozone (Lucas & Take a look, 1993 ; ) debated that because the on PEFO R. callenderi try discovered just when you look at the a specific facies (bluish paleosols) at the one stratigraphic height (right above the Painted Wasteland step three Sandstone), why these situations don’t depict the genuine stratigraphic listing of the fresh new taxon and as an alternative reflected a maintenance bias. After that breakthroughs off R. callenderi issue on the Owl Material Representative (Gordon mais aussi al., 2020 ; Whatley et al., 2013 ) and you can Sonsela Affiliate (Atchley mais aussi al., 2013 ) helps so it hypothesis, that the specimens show that at the very least from the PEFO, brand new stratigraphic selection of R. callenderi offers into the underlying Adamanian holochronozone. The absence of Roentgen. callenderi in the almost every other penecontemporaneous internet sites on Western Southwest try puzzling, like given exactly how plentiful it’s within internet where they occurs. Eg, the newest vertebrate assemblage of your own Petrified Tree Representative on Ghost Farm when you look at the northern New Mexico try geographically intermediate between your kind of area out-of Roentgen. callenderi and you will PEFO, offers the fresh new visibility multiple Revueltian list taxa (Irmis, Nesbitt, ainsi que al., 2007 ; Whiteside et al., 2015 ), and contains accurate ages limitations that show it overlaps with time on all the way down Petrified Tree User in the PEFO (Irmis mais aussi al., 2011 ; Rasmussen mais aussi al., 2020 ). There is absolutely no noticeable taphonomic reasons why that it well-sampled and you can varied assemblage cannot preserve Revueltosaurus, because it include from small-bodied drepanosaurs so you can high-bodied phytosaurs and aetosaurs. Also, it is interested you to Roentgen. callenderi was not bought at almost every other Bull Canyon Development sites or perhaps in similar strata in west Colorado (elizabeth.grams., Lehman & Chatterjee, 2005 ; ).