A possible Revueltosaurus-instance creature is present on Wolfville Formation (Carnian; Sues & Olsen, 2015 ) off Nova Scotia
6.dos.step 3 Other Revueltosaurus-eg taxa
In the first place referred to a keen ornithischian dinosaur (Galton, 1983 ), Irmis, Parker, et al. ( 2007 ) debated one to NSM 004 Girl , an effective rear percentage of a remaining maxilla with the majority of a tooth inside a keen alveolus, shares a number of reputation says which have Roentgen. callenderi both in dental and maxillary morphology plus a powerful ridge over the ventral margin of the antorbital fossa, the fresh new really-set up buccal emargination of your own enamel line in ventral evaluate, and you may a beneficial denticled enamel crown devoid of an effective basal asymmetrical swelling (Irmis, Parker, mais aussi al., 2007 ). A keen ilium in the Wolfville Formation (NSM 012 Girl ) is very like R. callenderi inside the having an anterior means of the brand new iliac knife that doesn’t extend anteriorly outside of the anterior the total amount of your own pubic peduncle and it has a standard, rounded dorsal margin toward iliac blade. Which feature in addition to helps the existence of a great Revueltosaurus-particularly taxon on creation (Sues & Olsen, 2015 ).
6.step 3 Biostratigraphic occurrences and you will effects
Roentgen. callenderi has only started recorded of several elements, the sort area regarding the Bull Canyon Formation (Dockum Group) of east Brand new Mexico (Have a look, 1989 ; Search mais aussi al., 2005 ) while the Chinle Creation on Petrified Tree National Park (Padian, 1990 ; Beuhler mais aussi al., 2001 ; Parker ainsi que al., 2005 ; Atchley et al., 2013 ; Profile 1b). On second place, ahead of selecting voucher specimens of taxon on best Blue Mesa User and middle Sonsela Member, R. callenderi is thought to take place in a restricted stratigraphic variety into the the reduced-middle Petrified Forest User (Beuhler mais aussi al., 2001 ; Have a look, 2001 ; Parker & ) contended you to Roentgen. callenderi try off biochronological electricity. Both in new Mexican kind of locality and you can Coated Desert localities inside the northern PEFO, R. callenderi cooccurs towards aetosaur T. coccinarum and you may mystriosuchine (= pseudopalatine) leptosuchomorph phytosaurs, taxa that have been put as the directory taxa with the Revueltian holochronozone (Lucas & See, 1993 ; ) argued that as at the PEFO R. callenderi was located just in a particular facies (bluish paleosols) on an individual stratigraphic peak (just above the Painted Desert 3 Sandstone), these particular incidents did not depict the true stratigraphic variety of the fresh new taxon and as an alternative reflected an upkeep prejudice. Then breakthroughs out-of Roentgen. callenderi issue throughout the Owl Material Affiliate (Gordon ainsi que al., 2020 ; Whatley et al., 2013 ) and you may Sonsela Member (Atchley mais aussi al., 2013 ) aids so it hypothesis, that the brand new specimens reveal that at the least at PEFO, the newest stratigraphic selection of R. callenderi stretches towards hidden Adamanian holochronozone. Its lack of Roentgen. callenderi from the almost every other penecontemporaneous internet sites about American Southwest is actually puzzling, such as considering how plentiful it’s during the internet sites in which they happens. Including, the brand new vertebrate assemblage of Petrified Forest Representative on Ghost Farm from inside the northern The newest Mexico try geographically advanced between your particular area off R. callenderi and you may PEFO, shares the visibility several Revueltian directory taxa (Irmis, Nesbitt, et al., 2007 ; Whiteside mais aussi al., 2015 ), possesses direct years limits that show they overlaps over time on down Petrified Tree Affiliate at the PEFO (Irmis ainsi que al., 2011 ; Rasmussen ainsi que al., 2020 ). There’s absolutely no visible taphonomic reason why it better-tested and you will varied assemblage shouldn’t keep Revueltosaurus, because consists of everything from brief-bodied drepanosaurs in order to high-bodied phytosaurs and you will aetosaurs. Likewise, it is curious that Roentgen. callenderi was not discovered at most other Bull Canyon Creation web sites or even in comparable strata for the west Tx (e.grams., Lehman & benaughty platinum satД±n al Chatterjee, 2005 ; ).