5.6.six Rear caudal vertebrae

Chevron issues occur however they are shorter distinct than in the fresh mid-caudal vertebrae and no line of groove to your midline of ventral skin is obtainable. The brand new transverse procedure try small laterally, dorsoventrally hit bottom projections regarding the rear 1 / 2 of the bottom of new neural arch. The latest zygapophyses project a little outside the centrum face and are also small tab-such processespared to your previous spinal series the brand new neural back is smaller so you can a thin median ridge hooking up the fresh new prezygapophyses and you will postzygapophyses.

5.6.eight Ribs

Cervical and you will trunk area ribs is known throughout the associated specimens and in the bonebeds from the PFV 297 and you may PFV 414. A nearly over cervical rib out-of PEFO 34561 try really-kept which is lost just the rear tip and the tuberculum (Contour 8o). The latest prior means of the rib versions a circular projection and you can tapers posteriorly to create a slimmer techniques. From inside the prior and you may rear have a look at, the capitulum as well as the base of the tuberculum was split because of the deep grooves. Inside medial examine, the brand new posterior procedure contours anterodorsally and you can forms a good ridge you to will get the fresh capitulum. Superficial fossae can be found toward both sides with the ridge. The size of the latest rib was short, becoming a comparable length while the length of an effective cervical centrum.

Several prior trunk area ribs are also managed during the PEFO 34561 (Profile 8p). Are shed new distal half of the newest ability. The fresh tuberculum was raised on good pedestal that is oval in the cross section and you will well separated in the capitulum. The new capitulum is actually increased on an elongate pedestal which is game inside cross-section and founded just as much as forty-five° regarding the tuberculum. A-sharp dorsoventral ridge can be found distal for the convergence from the capitulum and you will tuberculum into prior side of the rib. In between the ridge while the shaft in medial examine is actually a mildly deep fossa. Inside posterior look at, discover a very shallow fossa only distal on the convergence of one’s capitulum and you may tuberculum. The remainder rib shaft is actually convex anteriorly and you can apartment posteriorly and you can versions an excellent medially rounded rod.

A posterior trunk area rib (PEFO 33848) is comparable except that the new rib axle contours a whole lot more highly medially. In addition to, brand new capitulum and you can tuberculum are not broke up toward elongate pedestals; he or she is connected by a finer ridge therefore the capitulum expands arablounge indir more medially than the tuberculum. The fresh new anterior ridge try a little reduced projected versus much more prior trunk area rib, while the posterior fossa merely distal towards the capitulum and you will tuberculum was slightly greater. All of those other rib axle is more egg-shaped from inside the cross section versus way more anterior trunk area rib. Brand new distal prevent is actually a bit stretched that is concave from inside the distal see.

5.6.8 Gastralia

An individual gastralium is known from the bonebed (PEFO 33847; Profile 8q). The new feature enjoys several shafts one to form an open “V.” New top of the gastralium is game and does not setting a sharp area. The new shaft was oval during the cross-section, providing the ability a flattened looks. The possible lack of of several preserved gastralia implies that R. callenderi got couples gastralia like other aetosaurs (elizabeth.g., Typothorax coccinarum, Heckert et al., 2010 ) as opposed to the deeper amount in other pseudosuchians (elizabeth.g., the newest loricatan Prestosuchus chiniquensis, Desojo ainsi que al., 2020 ).

5.six.nine Chevrons

Strangely, zero chevrons had been retrieved about several quarries. It seems a bit impractical you to R. callenderi lacked chevrons considering the common thickness various other archosauromorphs, so this most likely is an effective taphonomic effect considering the end “club” molded of the osteoderms across the end (select below). Also, this new caudal spinal vertebrae provides collection of chevron aspects on the ventral body.