The latest centra of the posterior caudal vertebrae (Profile 8n) is anteroposteriorly elongate and you may strongly amphicoelous
5.6.6 Posterior caudal spinal vertebrae
Chevron issues can be found but are shorter type of compared to this new mid-caudal backbone without collection of groove on midline of ventral body is present. The new transverse process was brief laterally, dorsoventrally flattened projections on the rear 1 / 2 of the bottom of the newest sensory arch. The fresh new zygapophyses enterprise a little beyond the centrum face and are usually short tab-particularly processespared to the earlier vertebral series the new neural lower back are faster to a slimmer median ridge connecting the fresh prezygapophyses and you may postzygapophyses.
Cervical and you will trunk area ribs try recognized regarding the associated specimens and you can within the bonebeds in the kik ekЕџi PFV 297 and you can PFV 414. An about complete cervical rib out-of PEFO 34561 are better-preserved and is lost simply their rear idea and the tuberculum (Contour 8o). The new anterior procedure for the latest rib variations a curved projection and you can tapers posteriorly to form a slimmer procedure. Into the prior and you may posterior examine, the latest capitulum together with root of the tuberculum are broke up by the deep grooves. Into the medial examine, the new rear processes contours anterodorsally and versions good ridge one to will get this new capitulum. Superficial fossae can be found on the each side with the ridge. The length of the new rib is short, getting a comparable size once the period of a cervical centrum.
Multiple anterior trunk ribs also are kept into the PEFO 34561 (Shape 8p). Are destroyed the fresh new distal 50 % of the fresh new ability. The newest tuberculum try increased to your a good pedestal that’s egg-shaped inside cross section and you may well separated on capitulum. The brand new capitulum was increased for the an elongate pedestal that is rounded during the cross-section and you may built approximately forty five° about tuberculum. A-sharp dorsoventral ridge can be obtained distal for the convergence out of the newest capitulum and you may tuberculum for the prior region of the rib. In-between this new ridge therefore the shaft in medial consider are an averagely strong fossa. During the rear glance at, there is a highly low fossa just distal toward convergence of your capitulum and you may tuberculum. The remainder rib axle is convex anteriorly and you can flat posteriorly and you will versions an effective medially rounded pole.
A more rear trunk area rib (PEFO 33848) is similar besides the new rib shaft curves significantly more firmly medially. And additionally, this new capitulum and you may tuberculum commonly broke up on elongate pedestals; he’s linked by a thin ridge and capitulum runs so much more medially than the tuberculum. This new prior ridge try somewhat quicker projected as compared to much more anterior trunk rib, plus the rear fossa only distal with the capitulum and tuberculum was a little deeper. The rest of the rib shaft is far more oval during the cross point compared to much more anterior trunk rib. The fresh new distal end is actually a bit stretched which will be concave during the distal see.
One gastralium is well known regarding bonebed (PEFO 33847; Contour 8q). The brand new function have a few shafts that form an open “V.” New top of the gastralium are circular and won’t function a sharp area. This new axle is egg-shaped when you look at the cross-point, providing the ability a great flattened looks. The possible lack of many preserved gastralia means that R. callenderi had couple gastralia like other aetosaurs (age.g., Typothorax coccinarum, Heckert mais aussi al., 2010 ) rather than the greater number various other pseudosuchians (age.grams., this new loricatan Prestosuchus chiniquensis, Desojo mais aussi al., 2020 ).
Strangely, zero chevrons were retrieved throughout the several quarries. It looks somewhat impractical one Roentgen. callenderi lacked chevrons given the well-known occurrence in other archosauromorphs, so this probably is actually an excellent taphonomic feeling because of the tail “club” formed by osteoderms along side end (come across lower than). Additionally, the new caudal backbone provides type of chevron factors on their ventral body.