A potential Revueltosaurus-eg animal can be acquired throughout the Wolfville Development (Carnian; Sues & Olsen, 2015 ) away from Nova Scotia

six.2.step 3 Other Revueltosaurus-for example taxa

To begin with referred to an enthusiastic ornithischian dinosaur (Galton, 1983 ), Irmis, Parker, ainsi que al. ( 2007 ) argued you to NSM 004 Sweetheart , a beneficial rear percentage of a remaining maxilla which have a lot of good tooth into the a keen alveolus, offers lots of profile claims having R. callenderi in both dental care and you can maxillary morphology including an effective ridge along side ventral margin of antorbital fossa, the newest well-install buccal emargination of the enamel row from inside the ventral check, and you may a good denticled tooth crown without a great basal asymmetrical lump (Irmis, Parker, mais aussi al., 2007 ). An ilium in the Wolfville Formation (NSM 012 Gf ) is extremely similar to that of Roentgen. callenderi into the which have an prior process of the iliac knife one to doesn’t extend anteriorly outside of the prior the total amount of your pubic peduncle and has a broad, round dorsal margin toward iliac knife. That it feature together with helps the existence of a great Revueltosaurus-such taxon regarding the formation (Sues & Olsen, 2015 ).

six.step three Biostratigraphic incidents and you may implications

R. callenderi only has been filed off one or two areas, the type area throughout the Bull Canyon Formation (Dockum Class) off east The fresh Mexico (Have a look, 1989 ; Hunt et al., 2005 ) together with Chinle Creation at the Petrified Forest Federal Playground (Padian, 1990 ; Beuhler mais aussi al., 2001 ; Parker mais aussi al., 2005 ; Atchley ainsi que al., 2013 ; Profile 1b). Within second location, in advance of seeking voucher specimens of one’s taxon on uppermost Bluish Mesa Representative and you can center Sonsela Representative, Roentgen. callenderi are believed to occur in a restricted stratigraphic assortment within the the lower-middle Petrified Tree Associate (Beuhler ainsi que al., 2001 ; Look, 2001 ; Parker & ) contended you to R. callenderi was from biochronological electric. Both in the North american country variety of locality and Painted Wilderness localities into the northern PEFO, Roentgen. callenderi cooccurs into aetosaur T. coccinarum and mystriosuchine (= pseudopalatine) leptosuchomorph phytosaurs, taxa which have been made use of while the directory taxa to your Revueltian holochronozone (Lucas & Search, 1993 ; ) debated you to while the at PEFO Roentgen. callenderi are discovered only during the a specific facies (bluish paleosols) at an individual stratigraphic height (just above the Painted Wasteland 3 Sandstone), these particular incidents didn’t represent the genuine stratigraphic directory of the brand new taxon and you can rather shown a maintenance prejudice. Subsequent breakthroughs out of Roentgen. callenderi thing regarding Owl Stone Associate (Gordon ainsi que al., 2020 ; Whatley et al., 2013 ) and you may Sonsela Member (Atchley ainsi que al., 2013 ) supports it hypothesis, and these the fresh new specimens reveal that about at the PEFO, the fresh new stratigraphic a number of R. callenderi extends with the fundamental Adamanian holochronozone. The absence of R. callenderi at most other penecontemporaneous websites from the Western Southwest is puzzling, particularly given exactly how plentiful it is in the internet in which they happens. Instance, new vertebrate assemblage of your Petrified Forest Member in the Ghost Farm during the northern New Mexico try geographically advanced involving the sorts of locality away from Roentgen. callenderi and you will PEFO, offers the fresh new exposure various Revueltian list taxa (Irmis, Nesbitt, et al., 2007 ; Whiteside ainsi que al., 2015 ), and has specific years restrictions that demonstrate they overlaps over the years into all the way down Petrified Forest Affiliate within PEFO (Irmis ainsi que al., 2011 ; Rasmussen mais aussi al., 2020 ). There is no obvious taphonomic good reason why which really-sampled and you may varied assemblage shouldn’t keep Revueltosaurus, because contains sets from small-bodied drepanosaurs so you can higher-bodied phytosaurs and you can aetosaurs. feabie premium apk Similarly, it is curious you to Roentgen. callenderi wasn’t available at other Bull Canyon Formation web sites or in similar strata in western Tx (e.grams., Lehman & Chatterjee, 2005 ; ).