塔尔玛桥东-扎扛一带是近年发现的藏北地区第二个有可靠生物化石依据的奥陶系出露区。描述的鹦鹉螺化石是该区鹦鹉螺化石的一小部分,包括1新属、2新种和1未定种,分别是Taermaocerasgen.nov.,Taer-maocerasregularegen.etsp.nov.,Taermaocerasovatumgen.etsp.nov.及Taermaocearssp.。

Eastern Taerma bridge-Zhakang was found in recent years to be the second spot of Ordovician outcrop based on reliable fossils. The nautiloids described here include one new genus, two new species and one indeterminate species,which represent only a small fraction of the nautiloids collected from this area. They are new materials of Ordovician nautiloids that have been determined up to now, which enrich Ordovician nautiloid faunal assemblages as well as provide new data to both classification and correlation of the Ordovician for this area and geographical distribution of nautiloid fauna.

Q911.2

中国地质调查西藏申扎地区1:25万区域地质调查资助项目