Aetosauriformes (Shape dos) is different from some other archosaur clades when you look at the possessing another book mixture of profile says (Nesbitt, 2011 ; Butler mais aussi al., 2014 ; ; this study): convex distal side of distal maxillary pearly whites (shared with specific loricatans also crocodylomorphs); round and you can heavy aspect to your medial section of the rear procedure of the newest squamosal on paroccipital processes (distributed to Turfanosuchus dabanensis); diapophysis and parapophysis with the middle trunk vertebrae longer towards the stalks (shared with ornithischian dinosaurs, ornithosuchids, Age. okeeffeae, and you will crocodyliforms); distance are less than simply 80% of your length of the humerus (shared with Dinosauria, Protosuchus richardsoni, and you will Alligator mississippiensis); and you may presacral paramedian osteoderms is mediolaterally broad than simply anteroposteriorly long (shared with Riojasuchus tenuisceps, protosuchid crocodyliforms, phytosaurs, together with archosauriform V. campi); horizontal osteoderms establish through the all the carapace (shared with erpetosuchids, A. geoffreyi and you may aetosaurians).
We ending the medical diagnosis of your own genus is not green and you can limited by the brand new genus as in the first place recognized by Seem ( 1989 ) and you can amended from the Heckert et al., ( 2012 ) (pick cause lower than). callenderi in accordance with the holotype and referred material.
Revised medical diagnosis
Roentgen. callenderi and contains another unique mix of character states (autapomorphies ; ): maxillary teeth better inset from the horizontal margin of your head (= buccal emargination) (shared with ornithischian dinosaurs); haphazard patterning towards dorsal body regarding rectangular paramedian osteoderms (in the place of radial patterning; distributed to T. coccinarum); head size is higher than that the new femur (distributed to phytosaurs, proterochampsids, and you will pterosaurs) the spot where the femur is actually
61% the size of the new skull; descending means of the newest nasal suits into a good concave outlet on the this new premaxilla (shared with T. dabanensis); small additional nares (limit measurement
1/step 3 the size of the brand new orbit anteroposterior duration)*; posterior procedure for jugal fits on a-v-molded slot regarding the quadratojugal*; strongly verticalized parabasisphenoid (basitubera is dorsal to the pterygoid procedure) (shared with some loricatans); average pharangeal recess of parabasisphenoid split up of the a strong straight ridge*; additional epidermis of one’s squamosal laterally displaced with respect to the quadrate (distributed to aetosaurs, Gracilisuchus stipanicicorum, and you can Tarjadia ruthae); posterior caudal osteoderms bonded to the a solid pipe*; dorsal eminence of the paramedian osteoderms offset sideways regarding osteoderm center; horizontal osteoderms that will be markedly oblong (as opposed to equant or nearly equant) (distributed to erpetosuchids); showing set of ventral osteoderms (shared with aetosaurs, for example, S. robertsoni).
cuatro.6 Known specimens
That it osteological breakdown would depend primarily towards: PEFO 33787, PEFO 33788, limited skull; PEFO 33789, proper scapulocoracoid; PEFO 33819, a couple of sacral centra; PEFO 33845, leftover posterior portion of the iliac blade; PEFO 33847, bonded gastralia; PEFO 33848, dorsal rib; PEFO 33861, cervical vertebra; PEFO 33870, partial manus; PEFO 33874, left and right frontals; PEFO 33875, sacral centrum; PEFO 33876, limited right ilium; PEFO 33892, best ilium; PEFO 33894, left ilium; PEFO 34056, limited right ilium; PEFO 34269, partial bones and skull; PEFO 34273, leftover tibia; PEFO 34274, kept maxilla and you will lacrimal; and you can PEFO 34561, nearly done skull and you can associated skeleton; PEFO 34570 benaughty hookup, limited braincase; PEFO 34833, articulated cervical vertebrae; PEFO 36875, nearly done skull and you can relevant specimen; PEFO 36876, partial bones; PEFO 42442/UWBM 116869, mainly done bones; PEFO 38609, done skull; PEFO 33791, best ilium; and you will PEFO 33991, best ilium. Extra key specimens are NMMNH P-16932, limited bones (Have a look et al., 2005 ), and other NMMNH specimens listed in Heckert ( 2002 ). The newest solitary ability specimens listed above suits aspects based in the limited associated skeletons and thus are unambiguously assignable so you’re able to Reveueltosaurus callenderi. A complete directory of specimens referred to R. callenderi is offered in the Investigation S1 and you will linear size of relevant specimens are provided from inside the Research S2. Pick 3d activities of PEFO 34561 are supplied during the Research S4.