5.6.6 Posterior caudal backbone
Chevron points exist but are quicker distinctive line of compared to the new mid-caudal spinal vertebrae without collection of groove into the midline of one’s ventral skin can be acquired. The newest transverse process is actually small laterally, dorsoventrally flattened projections regarding rear half of the base of the sensory arc. The fresh zygapophyses endeavor some outside the centrum face and so are short tab-instance processespared towards past vertebral show the newest sensory back is less in order to a slimmer median ridge connecting new prezygapophyses and postzygapophyses.
5.6.seven Ribs
Cervical and you may trunk area ribs is known about associated specimens and in the bonebeds from the PFV 297 and you will PFV 414. A nearly done cervical rib out-of PEFO 34561 are really-managed and that’s destroyed simply its posterior suggestion and tuberculum (Shape 8o). The anterior means of the brand new rib variations a circular projection and you may tapers posteriorly to create a finer process. From inside the prior and you can rear examine, the brand new capitulum and the root of the tuberculum was split up of the strong grooves. From inside the medial evaluate, the rear techniques contours anterodorsally and you will variations a great ridge that gets the capitulum. Shallow fossae are present to the each side regarding the ridge. The size of new rib was small, are a comparable length since the length of a good cervical centrum.
Several anterior trunk ribs are maintained within the PEFO 34561 (Contour 8p). Are typical destroyed the fresh distal 1 / 2 of brand new function. The brand new tuberculum was elevated on good pedestal that’s oval in the cross section and you will well separated in the capitulum. This new capitulum is elevated for the an elongate pedestal which is circular for the cross-section and you may centered whenever forty five° about tuberculum. A-sharp dorsoventral ridge can be obtained distal to the overlap from new capitulum and you may tuberculum to your prior section of the rib. Around the new ridge and axle from inside the medial look at try a moderately strong fossa. During the posterior consider, there was a very superficial fossa simply distal into the overlap of the capitulum and you will tuberculum. Other rib axle try convex anteriorly and you may apartment posteriorly and versions an effective medially rounded pole.
An even more posterior trunk rib (PEFO 33848) is similar besides brand new rib axle shape a whole lot more highly medially. Along with, new capitulum and you can tuberculum commonly split up towards elongate pedestals; he could be connected by a slimmer ridge and capitulum stretches significantly more medially compared to the tuberculum. The fresh prior ridge try some reduced estimated as compared to a whole lot more prior trunk rib, and the posterior fossa just distal with the capitulum and you can tuberculum are slightly greater. The remainder rib axle is more egg-shaped in the mix section than the a great deal more anterior trunk area rib. The latest distal stop is actually slightly longer that will be concave in distal see.
5.six.8 Gastralia
Just one gastralium known about bonebed (PEFO 33847; Figure 8q). The brand new element keeps two shafts one to means an unbarred “V.” clover dating bio The brand new apex of one’s gastralium try circular and won’t setting a-sharp part. The fresh new axle is actually egg-shaped into the cross-area, giving the ability a flattened physical appearance. The lack of of a lot maintained gastralia suggests that R. callenderi had partners gastralia like many aetosaurs (age.grams., Typothorax coccinarum, Heckert mais aussi al., 2010 ) rather than the better amount in other pseudosuchians (age.grams., brand new loricatan Prestosuchus chiniquensis, Desojo et al., 2020 ).
5.6.9 Chevrons
Surprisingly, no chevrons was basically recovered from the several quarries. It looks a little unrealistic one to R. callenderi lacked chevrons provided their popular thickness in other archosauromorphs, which means this most likely was an effective taphonomic impression considering the end “club” formed by osteoderms along the end (look for less than). In addition, the caudal vertebrae provides type of chevron aspects on the ventral body.