The early Cenomanian crippsi Event comprises a 1–3-m-thick interval characterised by mass occurrences of the early Cenomanian inoceramid Gnesioceramus crippsi, identified in the uppermost Sharpeiceras schlueteri Subzone (lower lower Cenomanian Mantelliceras mantelli Zone), below an interregional sequence boundary (SB Ce 1). At Lüneburg, the event is characterised by densely packed, very large, disc-like valves of G. crippsi. Taphonomy as well as bio- and microfacies suggest an event formation in a deeper shelf setting below the storm-wave base as primary biogenic concentration, the inoceramids living as recumbent forms on a soft substrate in dense populations. When tracked between basins, the stratigraphic pattern of the crippsi Event suggests a moderately prolonged phase (< 100 kyr) of increased shell production with rapid deposition aiding in preserving the shell-rich event strata. Towards the basin margins, it grades into storm wave-reworked bioclastic concentrations. The crippsi Event formed by an interregional population bloom and provides, as an proliferation epibole, an important marker for intra- and interbasinal correlation. The first record of G. mowriensis within the crippsi Event at Lüneburg, hitherto endemic to the US Western Interior Seaway, and the occurrence of the ammonite Metengonoceras teigenense, likewise an endemic North American faunal element, from the level of the crippsi Event in northern France indicate faunal exchange between the New and Old worlds during the early Cenomanian. This faunal dispersal and contemporaneous occurrence of warm-water biofacies in Western Europe during the early Cenomanian is explained by the existence of a perpetual NE-directed current transporting warm surface waters from the Gulf of Mexico towards Europe. The occurrence of short-lived M. teigenense in France allows for the calibration of the uppermost schlueteri Subzone of the mantelli Zone in Europe to the lowermost Neogastroplites muelleri Zone in North America and to assign an age of ~ 98.6–98.7 Ma to the crippsi Event.

早西诺曼尼亚ian蛇事件包括一个1-3m厚的间隔，其特征是早西诺曼尼亚in虫Gnesioceramus crippsi的大量发生，在区域间序列边界（SB）下方的最高Sharpeiceras schlueteri分区（下西诺曼尼亚Mantelliceras mantelli区）中确定。 Ce 1）。在吕讷堡（Lüneburg），该活动的特点是密密麻麻的非常大的圆盘状G阀。crippsi。排字法以及生物相和微相表明，在风暴波波峰下方的更深层架中形成了一个事件，这是主要的生物成因浓度，在密集种群中，卵形虫以斜卧的形式生活在柔软的基质上。当在盆地之间进行追踪时，克里普西斯事件的地层模式表明，壳产量增加有适度延长的阶段（<100年），而快速沉积有助于保留富含壳的事件层。朝向盆地边缘，它可以归类为风暴波重做的生物碎屑浓度。由区域间种群繁盛而形成的cr行事件，并作为扩散表象，为基内和基间相关性提供了重要标志。G. mowriensis的第一个记录在迄今为止一直是美国西部内陆海域特有的吕讷堡（Lüneburg）蠕虫事件中，以及从法国北部的蠕虫事件的水平来看，同样是北美特有动物群元素的褐铁Metengonoceras teigenense的出现表明，新的和西诺曼尼亚早期的旧世界。西诺曼尼亚早期在西欧出现的这种动物性分布和同时发生的温水生物相，可以解释为存在永久性的NE方向的电流，该电流将温暖的地表水从墨西哥湾向欧洲输送。寿命短的M的发生。法国的teigenense允许对最高处进行校准schlueteri的的亚带mantelli到最下面的区域在欧洲Neogastroplites muelleri区在北美和〜98.6-98.7马的年龄分配给crippsi事件。