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NEW LATE CRETACEOUS (CAMPANIAN AND MAASTRICHTIAN) MARINE GASTROPODS FROM CALIFORNIA

机译:来自加利福尼亚的新近白垩纪(柬埔寨和马斯特里赫特)海洋美食

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摘要

Three new genera and six new species of shallow-marine gastropods are named from Upper Cretaceous strata found mainly in California. The trochids Cidarina cretacea new species and Cidarina beta new species, the ficid Bulbificopsis garza new genus and new species, and the cancellariid Mataxa arida new species are from the Maastrichtian part of the Moreno Formation of north-central California. This is the earliest record of Cidarina, whose previous chronologic range was middle Eocene to Recent. Bulbificopsis is the first record of a Cretaceous ficid from the Pacific slope of North America, and Mataxa was previously known only from Upper Cretaceous strata in the southeastern United States and northeastern Brazil. The buccinid Eripachya jalama new species and the fasciolariid Calkota daileyi new genus and new species are from the lower upper Campanian Jalama Formation in southern California. Calkota is also recognized herein as occurring in upper Maastrichtian strata of North Dakota and South Dakota. The new melongenid genus, Pentzia, established for Fulgur hilgardi White, 1889, is from Campanian strata throughout California; middle Campanian strata on Sucia Island, Washington; and upper Campanian to lower Maastrichtian strata in northern Baja California, Mexico.
机译:从主要在加利福尼亚发现的上白垩统地层命名了三个新属和六个新物种的浅海腹足纲动物。 旋毛虫Cidarina cretacea新种和Cidarina beta < / sup>新物种,棘生的球茎白化病新属和新 种,以及网状马六甲紫杉新物种来自 中北部莫雷诺组的马斯特里赫特部分 加利福尼亚。这是Cidarina的最早记录,其先前的 年代学范围是中始新世至最近。 Bulbificopsis 是北美太平洋斜坡 上白垩纪胶质岩的第一个记录,而Mataxa以前仅从美国东南部和 东北巴西。 Buccinid Eripachya jalama新物种 和fasciolariid Calkota daileyi新属和新物种 来自加利福尼亚南部的较低的Campanian Jalama组。在这里,也承认加尔各答发生在北达科他州和南达科他州的 上马斯特里赫特地层中。 为Fulgur hilgardi 建立的新的加仑尼德属Pentzia怀特,1889年,来自加利福尼亚州的坎帕尼亚地层;位于华盛顿州苏西亚岛的坎帕尼亚中层地层;和上层 Campanian到下加利福尼亚州北部的马斯特里赫特岩层, 墨西哥。

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  • 来源
    《Journal of Paleontology》 |2003年第1期|50-63|共14页
  • 作者单位

    Department of Geological Sciences, California State University, Northridge 91330-8266,;

    Invertebrate Paleontology Section, Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, California 90007,;

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