The upper molar cusps was relatively bunoselenomorph

He has a short and upright postprotocrista labially created. The fresh new preprotocrista, seemingly upright, joins a well-arranged parastyle. The latest metaconule was a bit shorter which is big on M3. The new premetaconulecrista and fossae are simple in place of neocrista. The rear fossa is angled, specifically with the M3. Away from straight to the M1, this new postmetaconulecrista becomes sigmoidal with the M3, skipping the newest metacone. The new labial cusps are in the same axis which have apparently straight cristae. The paracone labial rib was outstanding, however, in the place of anterior groove. There’s no metacone labial rib. The brand new con el fin de-, meso-, and you will metastyles is outstanding. The latest lingual cingulum is quite weak so you can missing for instance the entostyle.

The new registered build of your fourth lower premolar is common to possess derived base pecoran and crown pecoran in the which have a proper-arranged mesolingual conid and you will rear cristid , . More over, the presence of an enamel outlet on p1 excludes a keen attribution to Prodremotherium or Mosaicomeryx . Even when the white teeth commonly as the bunoselenodont such as Amphitragulus elegans, the brand new introduced specimens have very ancient provides, such as for example an incredibly quicker metastylid, a decreased crown, a tiny postentocristid, and even though laterally compressed, bulged lingual cuspids to the lower molars. All of these functions exclude an affiliation so you’re able to either Dremotherium or Bedenomeryx , . Also, the fresh new very small-size off “Amphitragulus” quercyi is a distinguishing element to the most recent Oligocene ruminants from European countries , , , .

Dremotherium cf. guthi from Gaimersheim1: 1 remaining maxillary bone towards the enamel row M1-M3 (SNSB-BSPG 1952II4855). from Mailhat: 2 remaining P4-M2 (MNHN LIM154). Babameryx engesseri regarding Gaimersheim1: step 3 leftover fragmentary mandible that have m2 (SNSB-BSPG 1952II4818), (a) lingual, (b) labial, and you may (c) occlusal viewpoints. The dimensions bar was 2 cm.

Holotype referred specimens recommendations

Holotype. Jehenne (1987) has appointed brand new specimen IPHEP LM.1969.MA.40 due to the fact holotype. This really is a limited right maxillary bones which have P3-M3 (, Fig. 2), regarding Los angeles Milloque (MP29, France).

Called specimens. Mailhat MNHN LIM154 remaining P4-M2 (which performs, Fig. 6.2); Gaimersheim1 SNSB-BSPG 1952II4855 kept maxillary having M1-M3 (so it functions, Fig. six.1); SNSB-BSPG 1952II4870 best m2.


Straight down permanent dentition. The reduced molar is extremely improperly managed. Although not, which large ruminant features a fully selenomorph trigonid. This new cristid are elongated therefore the cuspids try highest to the tooth slightly pleated. The metastylid are well developed.

Upper permanent dentition. This new P4 are improperly maintained. All the lingual part try missing. The new anterolabial cone and has a weak labial rib. The brand new anterior stylid is actually busted. Brand new posterior one is quick but introduce. No neocrista obstructs new fossa. The newest quadratic higher molars inside occlusal consider bear a well-set-up metaconule slightly smaller than the protocone. New cusps are very selenomorph. The preprotocrista and also the postmetaconulecrista are labially created and you will some straight. This new postprotocrista is enough time, extremely curved, and labially depending. It could be totally separated (SNSB-BSPG 1952II4855) otherwise fused (MNHN LIM154) towards premetaconulecrista. The second stops within axis of your mesostyle. The new posterior basin is has actually a little metaconule bend towards the M2, large into the M3. The fresh paracone, possessing a beneficial paracone rib, and metacone, labially apartment and you can concave, try aimed. The fresh mesostyle and you may parastyle are well create. They function game brief articles. New mesostyle are big from M1 to help you M3. The new entostyle is actually poor otherwise missing. Discover none a good lingual cingulum related the fresh protocone nor an excellent metastyle developing a highly-build cuspid. But not, short anterior and you will posterior cingula can be found.


Which ruminant is fairly state-of-the-art in being better-selenodont and achieving zero lingual cingula during the upper molars, usually present in Lophiomeryx, Gelocus, Iberomeryx, Mosaicomeryx, and Babameryx , , , [61–63], . In contrast to Bachitherium, so it variety does not have a keen prior groove on large labial paracone rib , , . New learned fossils be just like the complex stalk Pecora and the ancient crown Pecora (such as for instance Amphitragulus, Dremotherium, Bedenomeryx). The newest tooth was somewhat pleated, while it’s generally easy within the Prodremotherium. Also, how big such teeth is much bigger than inside Prodremotherium in the dated Quercy choices and you can Pech Desse . One’s teeth be selenomorph compared to “Amphitragulus” and you will Bedenomeryx , , and the parastyle isn’t that anteriorly projected than simply noticed on “Amphitragulus” feningrei , , . Studying the neodiagnosis proposed of the Mennecart , these types of fossils include most of the proving top features of Dremotherium. The newest already defined variety in European countries is actually D. feignouxi (types of types) and D. guthi , , . The latter was slightly smaller compared to the kind species , similar to the fossils explained here. D. feignouxi simply took place in the Agenian (MN1-MN2; ), whereas D. guthi lived in the most recent Oligocene (MP28-MP30; ). However, into the absence of more well-kept thing, a decisive assignation towards the varieties isn’t feasible.

Leave a Reply

Your email address will not be published.