Palembert is found in the newest Quercy phosphorites area (South-west regarding France) near the community regarding Caylus (Tarn-et-Garonne, France)

Palembert is found in the newest Quercy phosphorites area (South-west regarding France) near the community regarding Caylus (Tarn-et-Garonne, France)

Matter out-of Palembert. That kept M2/ (Pal 21); you to definitely left mandibular fragment having M/3 (Pal sixty); one to kept mandibular fragment with M/2 and P/4 (Buddy 62); one best remote Meters/step three (Pal 64).

Into the distal area, the latest talonid basin are buccolingually compacted and you may bears a small entoconid and you will a worn hypoconid

Malfunction. The top dentition regarding Palembertina deplasi the fall of. gen. the fall of. sp. is just documented by the M2/ (Friend 21; Shape 2I-J, Shape 3C). They holds four chief cusps. New paraconule is actually mesiolingual and you will bears a good preparacristula linking brand new preparacristyla; the fresh new metaconule is highest and you can presents a short and you will carried on premetacristula, together with a postmetacristula signing up for the fresh new postmetacristyla; the newest protocone does not have a great crest that’s centrolingually organized. Brand new styles are really-pronounced: the fresh new buccal styles are weakly crested that have a circle-including and you will distally more likely mesostyle; new lingual styles, distostyle and you will mediostyle, is actually separated and large. In the long run, the fresh M2/ has pronounced mesial and you can distal cingula.

The low dentition regarding Palembertina deplasi old P/4 and you can Meters/2, an entire, unworn M/3, and a destroyed Meters/step 3. The new top from P/cuatro (Friend 62; Contour 2G-H) try short and you can slim and you may gifts about three fundamental cuspids: a big protoconid, metaconid, and you will paraconid. On the mesial the main enamel, the paraconid is actually a bit inclined lingually. An excellent postprotoconulid is visible within protoconid additionally the hypoconid. Brand new morphology of your own lower molars is generally centered on Meters/step 3 (Buddy 60, Buddy 64; Shape 2E-F, 2K, Contour 3d), from the worst conservation of your own Yards/dos (Friend 62; Contour 2G-H). The lower molars present around three lingual cuspids: good mesial metaconid, a sandwich-central metaconulid, and you may a beneficial distal entoconid. To the trigonid, the paraconid are short, and the protoconid is quite lingual. The newest talonid was highest having a small centroconulid near the metaconulid, and you will a beneficial postendocentroconulid weakly longer distolingually. The new metaconulid is actually high, close to the metaconid, in addition to mediocristid try short. A large area is present amongst the metaconulid together with entoconid. The fresh new entoconid possess a loop-including shape and is slightly even more distal as compared to hypoconid. M/step three (Pal 60, Pal 64; Shape 2E-F, 2K, Figure three-dimensional) introduce a huge hypoconulid, basin-shaped and you may distal for the entoconid. They links to your remaining talonid of the prehypocristulid, hence satisfies the posthypocristulid and you may postentocristulid. Moreover, the newest posthypocristulid is actually weakly obvious and prolonged lingually. In the long run, the latest mesial cingulid are large.

Brand new protoconid and metaconid was alongside one another, the protoconid becoming way more mesial as compared to metaconid

The fresh mandibular morphology from Palembertina deplasi nov. gen. late. sp. is actually noted throughout the amount of the second premolar (Friend 62; Shape 2G-H) mesially, with the base of the mandibular perspective (Friend sixty; Figure 2E-F) distally. The new mandible (Friend 62) gift ideas a preliminary diastema anywhere between P/2 and you will P/step three as well as 2 rational foramina toward lateral ramus, that beneath the mesial element of P/dos and something beneath the mesial element of P/4 (Profile 2H). The new horizontal ramus was gracile, seemingly low, as well as top is pretty constant within premolar area and the final molar. An extensive pit can be found involving the base of the rising ramus and the distal margin away from M/step 3 (Shape 2F). Brand new angular apophysis isn’t preserved but appears to be medially inclined; it is mesially delimited by the a low incisura vasorum (Pal 60).

Statements. Gervais (1852) erected the fresh new types Cainotherium courtoisii, and you will Stehlin (1906) then put they regarding genus Oxacron. Gervais (1852) revealed and you may figured the newest species in accordance with the small sized cainotheriids specimens out of La Debruge however, don’t explain a good holotype. With regards to the Internationally Code out of Zoological Nomenclature, title Oxacron courtoisii is present not appropriate; therefore, we explain here an excellent lectotype and you may good paralectotype to own Oxacron courtoisii, corresponding to the material away from La Debruge to start with realized from the Gervais (1852): kept mandibular fragment with P/3-M/3 (plate XXXV, fig. 4) to your lectotype; remaining maxillary fragment with P4/-M3/ (plate XXXIV, fig. 6) on the paralectotype.

Leave a Reply

Your email address will not be published.