callenderi were better-demonstrated (Heckert, 2002 ; Have a look, 1989 ; Look & Lucas, 1994 ; Padian, 1990 ). With several enamel bearing elements with in-situ pearly whites now lets an elegance out of early in the day functions. Take a look ( 1989 ) is proper from inside the recognize premaxillary white teeth out-of maxillary white teeth. But really, pearly whites like those from the premaxilla (Numbers 4e, f), described as becoming symmetric mesiodistally and you can lingually rounded within apex, are also found in the prior part of the dentary. Maxillary (Figures 4g, h) and you may dentary teeth (Figure 5d) inside the positions posterior towards the bbpeoplemeet ziyaretçileri 3rd enamel are nearly symmetrical mesiodistally, however, both is lingually curved on top, labiolingually compressed, as well as have higher expanded crowns. The form of the maxillary and dentary white teeth may differ positionally instead of an excellent discernable trend, maybe linked to tooth replacement.

Tooth regarding Roentgen

The fresh anterior face of your own atlantal intercentrum are damaged out, although posterior half this new feature is actually well preserved. Into the rear take a look at (Profile 8c), the fresh new element is subrectangular having slight dorsoventral constrictions along side midline. The fresh atlantal intercentrum are concave dorsally where it articulates to the atlantal pleurocentrum. They articulates on the axial pleurocentrum with an apartment seat-formed body (Shape 8d). New ventral epidermis of your own atlantal intercentrum try excavated by a deep despair bordered of the a sharp prior ridge. The fresh new horizontal facial skin try incised because of the a deep dorsoventrally depending sulcus one shape anteriorly at their dorsal extent. Both lateral and ventral despair are not used in phytosaurs (age.g., Machaeroprosopus mccauleyi, PEFO 31219), where in fact the atlantal intercentrum is actually otherwise much like that Roentgen. callenderi.

5.6.step one Atlas-axis advanced

The fresh new atlantal pleurocentrum, intercentrum, and you will neurapophysis can be found (Data 8a–c). The fresh prezygapophysis of atlantal neurapophysis is actually a small anteriorly-projecting rounded projection (Shape 8a). In the phytosaurs (elizabeth.grams., PEFO 31219) and crocodylomorphs (Brochu, 1992 ), this new prezygapophysis develops alot more sideways. The fresh postzygapophysis are much time and spike-such and you may tactics posterodorsally. Stretching medially in the zygapophyses is actually a standard thin flange you to definitely models the fresh rooftop of your neural tunnel.

The newest atlantal pluerocentrum (Shape 8b) are crescentic in prior and rear opinions, in the place of for the phytosaurs, in which it’s square in prior evaluate (e.g., PEFO 31219). Both the anterior and rear surfaces is convex, although the prior articular deal with are slightly compliment and you may wider than simply the fresh rear articular face. The new posterior articular face and contains a superficial dorsoventrally popular sulcus that is also utilized in phytosaurs (e.g., PEFO 31219). The dorsal epidermis of your atlantal pleurocentrum is concave and you may mediolaterally twice as large because anteroposteriorly long. Proportionally, the fresh atlantal pleurocentrum of R. callenderi was anteroposteriorly smaller than the exact same element in L. meadei (TMM 31185–97) and T. coccinarum (AMNH 7634), or even he or she is quite similar.

5.5 Postcrania Remote and you may relevant postcranial facets are all on quarries within PFV 297 and you will PFV 414. An educated-managed bones is the fact off PEFO 34561, that deliver the reason behind the fresh reconstruction (Profile 7) and breakdown, together with other specimens complementing the brand new dysfunction where detailed. 5.six Axial bones

New axial intercentrum isn’t recognized of one specimen. The fresh axial pleurocentrum (Profile 8d) off R. callenderi is approximately equant with its size. The new prior articular deal with is actually dorsally concave in which they articulates which have brand new atlantal facets; ventral to this town the latest articular deal with are flat and you may mountains posteroventrally in which it might articulate with the axial intercentrum. The new lateral edges of anterior articular deal with of your axial pleurocentrum is extended because margins abut towards the parapophyses. The fresh new parapophyses has actually flat articular surfaces, are elevated to your distinct pedestals, and you may deal with posterolaterally. The latest diapophyses means a curved section that confronts posterolaterally and you will a bit ventrally. This new lateral epidermis of your own centrum and contains a deep fossa rear on the parapophysis. That it fossa is actually proportionally greater compared to L. meadei (TMM 31185-97) or T. coccinarum (AMNH 7634), even though the breadth in the fossa changes using ontogeny various other archosaurs (Irmis, 2007 ) that will be missing in a few aetosaurs (Desojo et al., 2012 ). The newest ventral facial skin of your axis centrum possesses a-sharp average ventral keel. This is exactly absent within the L. meadei.