Additional preparation regarding specimens are accomplished by Pete Reser, Bruce Bailey, Emily Lessner, Cathy Lash, Matt Smith, and you may Kenny Bader

Additional preparation regarding specimens are accomplished by Pete Reser, Bruce Bailey, Emily Lessner, Cathy Lash, Matt Smith, and you may Kenny Bader

The latest authors give thanks to Petrified Tree Federal Playground Superintendents Lee Baiza, Cliff Spencer, and Brad Traver, Chiefs regarding Money Management Karen Dorn and Pat Thompson, while the remaining playground personnel to possess logistical help. Excavation really works are aided of the Yasemin Tulu, Katie Brakora, Bruce Bailey, Franceska Sena, Meredith Fontana, Susan Drymala, Jake Tapaha, Ben Kligman, Emily Lessner, Pete Reser, while the later Vin Morgan. Thanks so you can Christian Sidor and you will Kelsey Abrams (UWBM) to possess preparing, pictures, and you may entry to specimens in the its organization. More recommendations in this field was provided by the fresh new NPS Childhood Preservation Corps additionally the Navajo Preservation Corps. Most picture taking and you can drawings was indeed carried out by Tyra Olstad. Dr. Tap Holroyd (UCMP) be sure to considering the means to access series in her own care. K. Ritterbush (University of Utah) amply provided accessibility her petrographic microscope imaging system, therefore the osteoderm histological glides had been imaged by the J. Hambleton. Analysis by Hans-Dieter Sues, Julia B. Desojo, and you may Martin Ezcurra improved the manuscript. This really is Petrified Tree Federal Playground Paleontological Contribution No. 74. The new views conveyed here are those of your own experts and you will manage maybe not show the state feedback of the You. S. Authorities.

Creator Contributions

William Parker: Conceptualization (equal); formal study (lead); capital acquisition (lead); data (lead); methodology (lead); investment government (lead); creating – new write (equal); composing – remark and you will editing (equal). Sterling Nesbitt: Conceptualization (supporting); certified study (equal); research (equal); methods (equal); composing – new write (equal); writing – feedback and you will editing (equal). Randall Irmis: Conceptualization (equal); certified research (equal); data (equal); strategy (equal); writing – brand-new write (equal); writing – remark and modifying (equal). Jeffrey Martz: Formal study (supporting); study (supporting); methodology (supporting); visualization (equal); writing – original write (supporting); composing – remark and you will editing (supporting). Adam Marsh: Analysis curation (supporting); official research (supporting); study (supporting); strategy (equal); writing – feedback and editing (lead). Matthew Brown: Data (equal); strategy (equal); creating – unique write (equal); writing – feedback and you will modifying (equal). Michelle Stocker: Official research (supporting); investigation (supporting); methodology (supporting); resources (supporting); composing – remark and you can modifying (supporting). Sarah Werning: Formal study (supporting); investigation (supporting); methodology (supporting); visualization (supporting); writing – brand-new draft (supporting); creating – opinion and modifying (supporting).

Please be aware: The newest blogger isn’t accountable for the content or functionality out of any help recommendations provided by this new authors. Any questions (apart from shed posts) would be led for the associated blogger towards the article.

One among these secret early-branching pseudosuchians was Roentgen. callenderi, that has been to start with known as a beneficial putative ornithischian dinosaur predicated on remote, but apomorphic, white teeth in the Bull Canyon Development (Dockum Classification) out-of east New Mexico, All of us (Look, 1989 ). Then degree (age.grams., Heckert, 2002 ; Have a look, 2001 ; Hunt & Lucas, 1994 ; Padian, 1990 ) understood even more dental specimens from other localities and you can continued to recognize Roentgen. callenderi due to the fact a keen unambiguous dinosaur possessing ornithischian synapomorphies. Check ( 1994 , 2001 ) and indexed the clear presence of a limited skeleton off an enthusiastic armored pseudosuchian (NMMNH P-16932) regarding method of locality away from R. callenderi, which he reported to be a distinct taxon, but don’t officially revealed. The latest advancement out-of related skeletal procedure and additionally cranial question within situ white teeth from a good monodominant bonebed (sensu Eberth, Shannon, & Noland, 2007 ) from the Petrified Forest Member of the Chinle Creation at Petrified Forest National Playground (PEFO), Washington, United states, clearly exhibited you to definitely Roentgen. callenderi wasn’t a great dinosaur, but rather a young-diverging pseudosuchian (Parker mais aussi al., 2005 ). Predicated on one the information, Appear mais aussi al., ( 2005 ) introduced NMMNH P-16932 in order to Roentgen. callenderi. As the dysfunction of that issue try short term, it is essential for a few factors: (a) NMMNH P-16932 definitely signifies R. callenderi once the specimen boasts a great dentigerous maxilla with white teeth retaining R. callenderi apomorphies; (b) it’s from very near the method of locality of R. callenderi, both geographically and you may stratigraphically (Appear mais aussi al., 2005 ); and you will (c) NMMNH P-16932 was just like new PEFO skeletal thing allotted to Roentgen. callenderi by Parker mais aussi al. ( 2005 ). The fresh new genus Revueltosaurus integrated a couple of other species, “R”. hunti Heckert, 2002 , understood away from white teeth and you will bones in the down Chinle Development from Arizona and you will Utah minimizing Dockum Number of The newest Mexico, and you can “R”. olseni (Appear & Lucas, 1994 ), known off teeth regarding the Pekin Creation out of Vermont, United states.

Besides their eponymous taxon, the sole most other specimens out-of PFV 297 is fragmentary shuvosaurid skeleton (age.grams., PEFO 34072) discovered ex boyfriend-situ (Parker et al., 2005 ), and you will separated high, serrated teeth. These are generally teeth recognizable in order to phytosaurs and you will a big mediolaterally compressed recurved enamel (crown length = 63.step three mm) which have good resorbed sources that might show an enormous paracrocodylomorph (PEFO 41401). On the other hand, PFV 231 preserves a very varied assemblage also Roentgen. callenderi (e.grams., PEFO 33791), new non-archosaur archosauriform Vancleavea campi (PEFO 33978), indeterminate quick metoposaurid temnospondyls (e.g., PEFO 34081), shuvosaurids (age.grams., PEFO 33953), rauisuchids (sensu Nesbitt, 2011 ; elizabeth.grams., PEFO 33954), crocodylomorphs (age.g., PEFO 34090), mystriosuchine leptosuchomorph phytosaurs (PEFO 33980), the fresh aetosaur Typothorax coccinarum (e.g., PEFO 33967), the first-diverging theropod dinosaur Chindesaurus bryansmalli (PEFO 33982), and you can an effective coelophysoid theropod (age.grams., PEFO 33981; Parker mais aussi al., 2005 ; Parker & Irmis, 2005 ; Irmis, 2008 ; Parker & Barton, 2008 ; Parker & ).


The cause of death of they try unknown; yet not, monodominant bonebeds are generally designed because of the single disastrous incidents in which combination off taxa, often the result of long-label attritional accumulation, will not exists (Eberth & Brinkman, 1997 ). Curiously, people in the PFV 297 and you can PFV 414 try alongside a similar proportions (Data S2) and allegedly was indeed during the similar ontogenetic values (but find Griffin mais aussi al., 2020 to own a dialogue on size and you may ontogenetic condition); not, PFV 231 include people of various designs as well as specimens much larger compared to those in the most other two websites; for example, the fresh new front out of PEFO 41453 is actually

The new matrix is actually created inside the Mesquite v3.ten (Maddison & Maddison, 2019 ) and you can contains all in all, 444 letters getting 91 taxa. The new rhynchosaur Mesosuchus browni was applied because the outgroup in order to options probably the most parsimonious woods (MPTs). The newest dataset are analyzed for the PAUP*cuatro.0b10 (Swofford, 2002 ) using an effective heuristic browse confronted with step one,100 arbitrary addition replicates with forest bisection and you will reconnection branch trading. Emails thirty two, 52, 121, 137, 139, 156, 168, 188, 223, 247, 258, 269, 271, 291, 297, 314, 328, 356, 371, 399, 413, 430, and you can 432 (pick Nesbitt ainsi que al., 2020 having purchasing modifications of your brand new Nesbitt, 2011 dataset) was ordered. Zero-duration branches had been folded when they lacked support significantly less than any kind of the essential parsimonious reconstructions. The same topology while the same number of MPTs are retrieved when all characters are run unordered, even in the event another forest duration was discovered. Bootstrap assistance is determined from 1,100000 replicates using an effective heuristic research means that have haphazard taxon addition succession and you will TBR department swapping.