A lag deposit between the Tocito Sandstone and Mulatto Tongue of the Upper Cretaceous Mancos Shale in Sandoval County, New Mexico, USA, contains a fossil assemblage of late Turonian–early Coniacian chondrichthyans and osteichthyans. This assemblage consists primarily of isolated teeth that derive from at least 26 taxa including: Meristodonoides sp.; Ptychodus mortoni; P. mammillaris; Scapanorhyncus raphiodon; Protolamna sp.; Cretodus cf. C. semiplicatus; Cretodus sp.; Cretalamna “appendiculata”; cf. Eostriatolamia tenuiplicatus; Archaeolamna cf. A. kopingensis; Squalicorax cf. S. falcatus; S. deckeri; Squalicorax sp.; Paranomotodon(?) sp.; Rhinobatos lobatus; Ptychotrygon triangularis; Texatrygon hooveri; Pseudohypolophus mcnultyi; Ischyrhiza mira; Chondrichthyes indet.; Micropycnodon cf. M. kansasensis; Pycnodontiformes indet.; Aspidorhynchidae indet.; Protosphyraena sp.; and Enchodus cf. E. gladiolus. The lag deposit formed along a series of outer shoreface and discontinuous sandbars in the southeastern corner of the San Juan Basin during eustatic sea-level fluctuation herein referred to as the Turonian–Coniacian Time Transgressive (TCTT) Event. This sea-level event and the concentration of fish remains into a lag deposit is also recorded at several other states within the Western Interior Seaway of North America. These stratigraphic properties have correlative potential across basins and states and provide a framework by which regional and eustatic sea-level events can be interpreted. Differences in coeval faunas found within these TCTT lags are bathymetrically controlled, related to the degree of taphonomic reworking, and proximity of the ancestral shoreline.

美国新墨西哥州桑多瓦尔县上白垩统曼科斯页岩的 Tocito 砂岩和 Mulatto Tongue 之间的滞后矿床包含晚土伦阶 - 早 Coniacian 软骨鱼类和 osteichthyans 的化石组合。此组合主要包含从至少26类群包括导出分离的牙齿：Meristodonoides SP .; Ptychodus mortoni ; P. mammillaris ; Scapanorhyncus rapiodon ; Protolamna sp.; Cretodus参见。C. semiplicatus ; Cretodus sp.; Cretalamna “ appendiculata ”; 参见 Eostriatolamia tenuiplicatus ; 古藻参见 A. kopingensis ; 角鲨属参见。镰刀菌；S. dedeceri; 角鲨属；Paranomotodon (?) sp.; Rhinobatos lobatus ; Ptychotrygon triangleis ; Texatrygon hooveri ; Pseudohypolophus mcnultyi ; 菖蒲; 软骨鱼目；Micropycnodon参见。M. kansasensis ; Pycnodontiformes indet.; Aspidorhynchidae indet.; Protosphyraena sp.; 和Enchodus比较。乙。剑兰. 滞后沉积沿圣胡安盆地东南角的一系列外岸面和不连续的沙洲在海平面波动期间形成，本文称为图伦阶-康尼亚时间海侵 (TCTT) 事件。北美西部内陆海道内的其他几个州也记录了这种海平面事件和鱼类集中在滞后沉积物中的情况。这些地层特性具有跨盆地和跨州的相关潜力，并提供了一个框架，可以用来解释区域和海平面事件。在这些 TCTT 滞后中发现的同时代动物群的差异是受测深控制的，与埋藏改造的程度和祖先海岸线的接近程度有关。