callenderi was basically really-described (Heckert, 2002 ; Search, 1989 ; Hunt & Lucas, 1994 ; Padian, 1990 ). Badoo With several tooth hit facets within-situ teeth now allows a sophistication from previous really works. Seem ( 1989 ) are right when you look at the distinguishing premaxillary white teeth away from maxillary white teeth. Yet ,, teeth like those regarding premaxilla (Numbers 4e, f), described as are symmetric mesiodistally and lingually curved within apex, are also found in the prior part of the dentary. Maxillary (Rates 4g, h) and you will dentary teeth (Profile 5d) in ranks posterior with the third tooth are nearly symmetric mesiodistally, but sometimes was lingually curved on top, labiolingually compressed, and possess high lengthened crowns. The proper execution of maxillary and dentary teeth may vary positionally as opposed to an excellent discernable development, possibly associated with enamel replacement for.

One’s teeth regarding Roentgen

Brand new prior deal with of atlantal intercentrum is actually damaged aside, nevertheless the posterior 1 / 2 of the newest element was well-preserved. Into the rear take a look at (Profile 8c), the new element are subrectangular with limited dorsoventral constrictions across the midline. This new atlantal intercentrum is actually concave dorsally in which they articulates for the atlantal pleurocentrum. It articulates to your axial pleurocentrum that have a condo saddle-designed facial skin (Shape 8d). The fresh ventral facial skin of the atlantal intercentrum was excavated because of the a deep anxiety bordered by a sharp anterior ridge. New horizontal body is incised from the a deep dorsoventrally created sulcus you to definitely contours anteriorly in the its dorsal the amount. The horizontal and you will ventral anxiety aren’t included in phytosaurs (elizabeth.grams., Machaeroprosopus mccauleyi, PEFO 31219), the spot where the atlantal intercentrum are otherwise nearly the same as compared to Roentgen. callenderi.

5.six.step one Atlas-axis advanced

This new atlantal pleurocentrum, intercentrum, and you may neurapophysis exists (Figures 8a–c). New prezygapophysis of your atlantal neurapophysis try a small anteriorly-projecting round projection (Contour 8a). In the phytosaurs (e.grams., PEFO 31219) and crocodylomorphs (Brochu, 1992 ), new prezygapophysis grows significantly more laterally. Brand new postzygapophysis was long and you may surge-for example and you may strategies posterodorsally. Extending medially on the zygapophyses are a broad slim flange you to definitely forms the brand new rooftop of the neural tunnel.

The newest atlantal pluerocentrum (Figure 8b) was crescentic in the anterior and you can posterior viewpoints, in the place of from inside the phytosaurs, in which it is square when you look at the prior take a look at (elizabeth.grams., PEFO 31219). The prior and you can posterior counters is actually convex, although the prior articular deal with are somewhat compliment and you will broad than this new posterior articular face. The new rear articular face possesses a low dorsoventrally trending sulcus one is even utilized in phytosaurs (age.g., PEFO 31219). Brand new dorsal body of one’s atlantal pleurocentrum are concave and you will mediolaterally two times as greater because the anteroposteriorly much time. Proportionally, the latest atlantal pleurocentrum of Roentgen. callenderi are anteroposteriorly smaller versus exact same element in L. meadei (TMM 31185–97) and you will T. coccinarum (AMNH 7634), otherwise he’s comparable.

5.5 Postcrania Separated and you may associated postcranial factors are typical regarding the quarries on PFV 297 and PFV 414. The best-maintained skeleton is that of PEFO 34561, that’ll deliver the reason behind brand new reconstruction (Figure seven) and you will malfunction, together with other specimens supplementing new dysfunction where noted. 5.6 Axial skeleton

This new axial intercentrum is not identified out of any specimen. The axial pleurocentrum (Figure 8d) out-of R. callenderi is roughly equant within the dimensions. The fresh prior articular face is actually dorsally concave where they articulates with the fresh new atlantal aspects; ventral to this city the fresh new articular face was apartment and you can slopes posteroventrally where it can articulate into axial intercentrum. The brand new horizontal corners of your anterior articular deal with of your axial pleurocentrum try lengthened because the margins abut towards parapophyses. The fresh parapophyses features apartment articular counters, was raised to your line of pedestals, and you will deal with posterolaterally. The diapophyses function a rounded area one faces posterolaterally and you can quite ventrally. The fresh horizontal skin of your own centrum possesses an intense fossa rear to your parapophysis. That it fossa is proportionally better compared to L. meadei (TMM 31185-97) or T. coccinarum (AMNH 7634), though the breadth of fossa changes as a result of ontogeny various other archosaurs (Irmis, 2007 ) which can be missing in certain aetosaurs (Desojo mais aussi al., 2012 ). The new ventral epidermis of axis centrum and contains a sharp median ventral keel. This is exactly missing during the L. meadei.