5.6.six Posterior caudal spinal vertebrae
Chevron issue are present but they are faster type of than in the fresh mid-caudal vertebrae without collection of groove on midline of the ventral surface can be acquired. This new transverse process try small sideways, dorsoventrally hit bottom forecasts from the rear half of the base of brand new neural arc. The zygapophyses venture quite beyond the centrum deal with and they are quick tab-instance processespared into earlier spine series brand new neural spine are quicker to a slimmer average ridge connecting the newest prezygapophyses and you can postzygapophyses.
5.6.7 Ribs
Cervical and you can trunk area ribs are understood in the associated specimens and you will from inside the bonebeds at PFV 297 and you can PFV 414. An around over cervical rib out of PEFO 34561 is really-kept that will be missing merely its posterior tip therefore the tuberculum (Figure 8o). Brand new prior procedure of the fresh new rib variations a bent projection and you may tapers posteriorly to form a slimmer process. During the prior and rear see, this new capitulum as well as the base of the tuberculum is actually separated of the strong grooves. During the medial take a look at, the latest rear procedure curves anterodorsally and models a ridge one gets the brand new capitulum. Low fossae are present with the both sides of ridge. The length of the latest rib was brief, are comparable duration as the length of a good cervical centrum.
Several anterior trunk area ribs are kept for the PEFO 34561 (Shape 8p). Are missing the distal 50 % of the brand new ability. The newest tuberculum are raised into an excellent pedestal which is egg-shaped in the cross section and you will well-separated in the capitulum. The newest capitulum is raised towards an elongate pedestal that’s game in the cross-section and you can created approximately 45° regarding the tuberculum. A-sharp dorsoventral ridge is obtainable distal on the overlap out-of the capitulum and you can tuberculum with the prior region of the rib. Between the ridge and the axle inside the medial glance at try a slightly deep fossa. Into the rear see, there can be an extremely low fossa simply distal toward overlap of one’s capitulum and you can tuberculum. Other rib axle are convex anteriorly and flat posteriorly and you will models a beneficial medially curved pole.
A more rear trunk area rib (PEFO 33848) is comparable besides brand new rib axle shape alot more highly medially. Together with, the fresh capitulum and you will tuberculum are not separated to the elongate pedestals; they are connected from the a thinner ridge and the capitulum extends even more medially compared to the tuberculum. Brand new anterior ridge is a little shorter estimated than the a whole lot more anterior trunk rib, therefore the rear fossa only distal on capitulum and you will tuberculum are somewhat higher. The rest of the rib shaft is much more oval for the get across point compared to even more anterior trunk area rib. The newest distal prevent is a little extended which will be concave when you look at the distal evaluate.
5.six.8 Gastralia
One gastralium known regarding bonebed (PEFO 33847; Contour 8q). The newest function enjoys a couple shafts you to mode an open “V.” This new top of your chatiw ne iЕџe yarar own gastralium was game and does not form a-sharp part. The newest shaft are egg-shaped within the mix-area, supplying the element a beneficial hit bottom looks. The deficiency of of a lot kept gastralia means that Roentgen. callenderi got couple gastralia like many aetosaurs (age.grams., Typothorax coccinarum, Heckert et al., 2010 ) rather than the greater amount various other pseudosuchians (e.g., the fresh new loricatan Prestosuchus chiniquensis, Desojo mais aussi al., 2020 ).
5.6.9 Chevrons
Oddly, zero chevrons was basically retrieved regarding one or two quarries. It appears a bit unrealistic one to R. callenderi lacked chevrons considering their preferred occurrence various other archosauromorphs, which means this most likely is good taphonomic feeling because of the tail “club” formed because of the osteoderms along side tail (find lower than). Additionally, the brand new caudal spinal vertebrae keeps line of chevron issues on their ventral skin.
