Henosferus, ROUGIER & MARTINELLI & FORASIEPI & NOVACEK, 2007

ROUGIER, GUILLERMO W., MARTINELLI, AGUSTÍN G., FORASIEPI, ANALÍA M. & NOVACEK, MICHAEL J., 2007, New Jurassic Mammals from Patagonia, Argentina: A Reappraisal of Australosphenidan Morphology and Interrelationships, American Museum Novitates 3566 (1), pp. 1-56 : 5

Henosferus , new genus

ETYMOLOGY: From the Greek henos (old) and from the Latin ferus (animal).

HOLOTYPE AND ONLY KNOWN SPECIES: Henosferus molus .

DIAGNOSIS: This new taxon is diagnosed by the combination of the following characters (autapomorphic traits are indicated with an asterisk): lower dental formula consisting of i4, c1, p5, m3; variously developed diastemata between most premolars; molars with an obtuse to right-angled trigonid and a basined talonid with two well-developed cusps and a ridgelike structure in the position of entoconid/entocristid; procumbent paraconid in a more labial position than the metaconid; talonid slightly wider and much lower than trigonid; talonid wider than long; blunt prominent hypoconid cusp not fully differentiated from broad, bulbous hypoconulid connected by a broad, low crest (hypocristid); talonid lingually closed by a strong rounded entocristid, well-developed lingually*; lack of talonid wear; slender lower jaw having a Meckelian groove, a prominent medial flange associated with a lateral ridge of the dentary, and a deep dentary trough (possibly indicating presence, even though reduced, of postdentary bones still attached to dentary); and prominent, transversely wide, spoonlike angular process with a medial crest occupying a position homologous to pterygoid crest of other mammals*.