On some Paleocene invertebrates from the Potrerillos Formation (Difunta Group), northeastern Mexico
On some Paleocene invertebrates from the Potrerillos Formation (Difunta Group), northeastern Mexico
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墨西哥东北部 Potrerillos 组（Difunta 群）的一些古新世无脊椎动物
DOI：
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发表时间：
1995
影响因子：
1.4
通讯作者：
Maria del Carmen Perrilliat
中科院分区：
文献类型：
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作者：
F. Vega;Maria del Carmen Perrilliat
在 Potrerillos 组（拉波帕盆地）的古新世上部泥岩层和 Rancho Nuevo 组（帕拉斯盆地）的上部描述了三种软体动物和一种环节动物。所描述的物种包括腹足类动物、双壳类动物、鹦鹉螺类动物和蛇形蠕虫，这些物种首次被正式报道为墨西哥东北部迪丰塔群的古新世动物群。鹦鹉螺物种为迪芬塔群的两个沉积盆地之间的相关性提供了基础，正如据报道所研究的两个地层的古新世层一样。推断迪芬塔群古新世岩石的海岸和潮坪沉积环境。
Three species of mollusks and one annelid are described from the Paleocene upper mudstone member of the Potrerillos Formation (La Popa Basin), and from the upper part of the Rancho Nuevo Formation (Parras Basin). The species described include a gastropod, a bivalve, a nautiloid and a serpulid worm, which are formally reported for first time as Paleocene fauna of the Difunta Group in northeastern Mexico. The nautiloid species provides the basis for correlation between the two sedimentary basins of the Difunta Group, as it is reported for Paleocene layers of the two formations studied. Shoreface and tidal-flat depositional environments are inferred for the Paleocene rocks of the Difunta Group.