Re: Du nouveau

Posté par

...avec notamment l'holotype d'Amargatitanis...

Holotype: MACN PV N51, 53, 34, represented by the following associated material collected in 1983: six caudal vertebrae, a scapula, a femur and one astragalus.

Diagnosis: A. macni is diagnosed by the following associated characters. Robust, wide and flat scapula developed in a single plane, with straight, parallel anterior and posterior borders of the diaphysis. Acromion developed in straight line with respect to the diaphysis. Very short glenoid region, straight articulation for the coracoid, obtuse angle of coracoid articular surface with respect to the glenoid?scapular line, absence of scapular ventromedial process. Femoral fourth trochanter located at mid femur. Femur with a prominent head with respect to a moderately developed distal region. High astragalus with a deep crescentshaped fossa that bears two pairs of foramina on the upper part of the tibial side of the posterior astragalar fossa. On the fibular side, two foramina are visible also in a deep concavity.

Posté par

...et celui de Nopcsaspondylus

Holotype (lost), represented by a complete mid to posterior dorsal vertebra,with centrumand neural arch separated. The small centrum and large pleurocoel suggest that they derive from the same vertebra, as this is a common feature in rebbachisauroids.

Diagnosis: diplodocoid sauropod characterized by mid to posterior dorsal vertebrae with very reduced centra, forked medial centropostzygapophyseal lamina, lateral lamina of the neural spine formed by the spinodiapophyseal lamina plus a lateral spinopostzygapophyseal (different from that forming the postspinal lamina).

Posté par

Attention, faute d'orthographe: c'est Zhejiangosaurus lishuiensis qui existe.