Aetosauriformes (Profile dos) is different from virtually any archosaur clades inside having the second novel combination of reputation claims (Nesbitt, 2011 ; Butler et al., 2014 ; ; this study): convex distal edge of distal maxillary white teeth (distributed to certain loricatans as well as crocodylomorphs); round and thick factors to your medial area of the rear process of the newest squamosal for the paroccipital processes (distributed to Turfanosuchus dabanensis); diapophysis and you may parapophysis towards the middle trunk backbone lengthened into the stalks (shared with ornithischian dinosaurs, ornithosuchids, Age. okeeffeae, and you may crocodyliforms); radius try shorter than 80% of your period of this new humerus (distributed to Dinosauria, Protosuchus richardsoni, and Alligator mississippiensis); and you can presacral paramedian osteoderms try mediolaterally wider than simply anteroposteriorly enough time (shared with Riojasuchus tenuisceps, protosuchid crocodyliforms, phytosaurs, and archosauriform V. campi); horizontal osteoderms introduce during the all the carapace (distributed to erpetosuchids, A beneficial. geoffreyi and you can aetosaurians).
I end the analysis of one’s genus is not sustainable and you can restricted to the latest genus due to the fact to begin with identified by the Search ( 1989 ) and you may amended by the Heckert ainsi que al., ( 2012 ) (come across cause lower than). callenderi in line with the holotype and you can known situation.
Roentgen. callenderi and has the following novel mixture of character says (autapomorphies ; ): maxillary pearly whites better inset from the horizontal margin of your own skull (= buccal emargination) (shared with ornithischian dinosaurs); random patterning towards the dorsal body regarding rectangular paramedian osteoderms (as opposed to radial patterning; distributed to T. coccinarum); head length exceeds that the latest femur (shared with phytosaurs, proterochampsids, and you may pterosaurs) the spot where the femur is
61% the length of new skull; descending procedure of the newest nasal matches into the an excellent concave outlet towards the the brand new premaxilla (shared with T. dabanensis); short exterior nares (limit measurement
1/3 the length of this new orbit anteroposterior duration)*; rear procedure for jugal matches for the a v-designed position on quadratojugal*; highly verticalized parabasisphenoid (basitubera is dorsal into the pterygoid techniques) (shared with certain loricatans); average pharangeal recess of the parabasisphenoid divided of the a robust straight ridge*; external surface of one’s squamosal sideways displaced according to the quadrate (shared with aetosaurs, Gracilisuchus stipanicicorum, and you can Tarjadia ruthae); posterior caudal osteoderms bonded toward a powerful tubing*; dorsal eminence of your paramedian osteoderms counterbalance laterally regarding the osteoderm center; lateral osteoderms that will be significantly oblong (unlike equant or almost equant) (distributed to erpetosuchids); showing band of ventral osteoderms (distributed to aetosaurs, eg, S. robertsoni).
cuatro.six Called specimens
It osteological breakdown depends generally towards: PEFO 33787, PEFO 33788, partial skull; PEFO 33789, right scapulocoracoid; PEFO 33819, a few sacral centra; PEFO 33845, left rear part of the iliac blade; PEFO 33847, fused gastralia; PEFO 33848, dorsal rib; PEFO 33861, cervical vertebra; PEFO 33870, partial manus; PEFO 33874, kept apex indir and you will proper frontals; PEFO 33875, sacral centrum; PEFO 33876, limited correct ilium; PEFO 33892, correct ilium; PEFO 33894, remaining ilium; PEFO 34056, partial correct ilium; PEFO 34269, partial skeleton and skull; PEFO 34273, leftover tibia; PEFO 34274, left maxilla and you will lacrimal; and PEFO 34561, nearly over skull and you can related skeleton; PEFO 34570, partial braincase; PEFO 34833, articulated cervical spinal vertebrae; PEFO 36875, nearly over skull and associated sample; PEFO 36876, partial bones; PEFO 42442/UWBM 116869, generally over skeleton; PEFO 38609, complete head; PEFO 33791, right ilium; and you will PEFO 33991, proper ilium. Most key specimens is NMMNH P-16932, partial skeleton (See ainsi que al., 2005 ), or any other NMMNH specimens placed in Heckert ( 2002 ). Brand new single function specimens in the above list matches points found in the limited related skeletons meaning that is actually unambiguously assignable to Reveueltosaurus callenderi. A full range of specimens described R. callenderi is offered for the Studies S1 and linear measurements of associated specimens are provided for the Data S2. Come across three dimensional habits out-of PEFO 34561 are offered in Investigation S4.