A potential Revueltosaurus-such as for instance creature can be obtained regarding Wolfville Formation (Carnian; Sues & Olsen, 2015 ) away from Nova Scotia

six.dos.3 Other Revueltosaurus-including taxa

To start with labeled an ornithischian dinosaur (Galton, 1983 ), Irmis, Parker, mais aussi al. ( 2007 ) debated one NSM 004 Girlfriend , an effective rear percentage of a left maxilla having a lot of a good enamel in the an enthusiastic alveolus, shares a number of character states having Roentgen. callenderi both in dental care and you will maxillary morphology also a strong ridge across the ventral margin of the antorbital fossa, the fresh new better-set up buccal emargination of the tooth row during the ventral look at, and you will good denticled tooth crown devoid of good basal asymmetrical swelling (Irmis, Parker, mais aussi al., 2007 ). An ilium regarding Wolfville Development (NSM 012 Girl ) is very like R. callenderi from inside the having a keen prior procedure for the iliac knife one cannot apex uygulamasД± stretch anteriorly outside of the anterior the total amount of pubic peduncle and also a general, round dorsal margin with the iliac blade. This function in addition to supporting the current presence of an excellent Revueltosaurus-such as for example taxon regarding the development (Sues & Olsen, 2015 ).

6.3 Biostratigraphic incidents and you will ramifications

Roentgen. callenderi only has become filed away from two portion, the sort area regarding the Bull Canyon Development (Dockum Group) of eastern The latest Mexico (Look, 1989 ; Seem mais aussi al., 2005 ) in addition to Chinle Creation at the Petrified Forest Federal Playground (Padian, 1990 ; Beuhler et al., 2001 ; Parker mais aussi al., 2005 ; Atchley mais aussi al., 2013 ; Profile 1b). In the latter location, before selecting voucher specimens of your taxon on highest Blue Mesa User and you will middle Sonsela User, R. callenderi is thought to occur in a finite stratigraphic assortment when you look at the the lower-center Petrified Tree Associate (Beuhler ainsi que al., 2001 ; Seem, 2001 ; Parker & ) debated that Roentgen. callenderi was regarding biochronological electricity. In new North american country form of locality and you can Coated Wilderness localities from inside the north PEFO, Roentgen. callenderi cooccurs with the aetosaur T. coccinarum and you will mystriosuchine (= pseudopalatine) leptosuchomorph phytosaurs, taxa which were used since the list taxa to the Revueltian holochronozone (Lucas & Appear, 1993 ; ) debated one to since within PEFO R. callenderi was found only within the a certain facies (bluish paleosols) from the a single stratigraphic height (right above the Painted Desert step three Sandstone), these particular occurrences don’t portray the true stratigraphic list of the fresh new taxon and you will rather mirrored an upkeep prejudice. After that breakthroughs regarding Roentgen. callenderi topic from the Owl Rock User (Gordon mais aussi al., 2020 ; Whatley et al., 2013 ) and you will Sonsela Member (Atchley ainsi que al., 2013 ) aids this hypothesis, and these the latest specimens demonstrate that at the least on PEFO, this new stratigraphic variety of Roentgen. callenderi stretches with the fundamental Adamanian holochronozone. Its lack of R. callenderi on most other penecontemporaneous websites throughout the American Southwestern try puzzling, like offered exactly how abundant it is from the sites where it does occur. Including, the newest vertebrate assemblage of your Petrified Forest Member at the Ghost Farm from inside the northern Brand new Mexico was geographically intermediate involving the types of area out-of Roentgen. callenderi and you may PEFO, shares the new visibility some Revueltian index taxa (Irmis, Nesbitt, mais aussi al., 2007 ; Whiteside et al., 2015 ), and also appropriate decades limitations that demonstrate they overlaps over the years toward lower Petrified Tree Associate from the PEFO (Irmis mais aussi al., 2011 ; Rasmussen ainsi que al., 2020 ). There is no obvious taphonomic reason why it better-tested and you will diverse assemblage shouldn’t uphold Revueltosaurus, whilst include sets from brief-bodied drepanosaurs so you’re able to large-bodied phytosaurs and you will aetosaurs. Furthermore, it is curious you to definitely R. callenderi was not available at almost every other Bull Canyon Development internet sites or perhaps in comparable strata inside western Tx (e.grams., Lehman & Chatterjee, 2005 ; ).