Tlayúa Formation
| Tlayúa Formation | |
|---|---|
| Stratigraphic range: | |
Cipactlichthys scutatus, one of the fossil fish from Tlayúa Formation | |
| Type | Geological formation |
| Sub-units | Lower, Middle and Upper Members |
| Underlies | Unconformity with Eocene-Oligocene Pie de Vaca Formation |
| Overlies | Orizaba Formation |
| Thickness | Lower: 50 m Middle: 35 m Upper: 40 m |
| Lithology | |
| Primary | Limestone |
| Other | Mudstone |
| Location | |
| Coordinates | 19°06′N 98°12′W / 19.1°N 98.2°W |
| Approximate paleocoordinates | 17°06′N 61°36′W / 17.1°N 61.6°W |
| Region | Puebla |
| Country | Mexico |
| Type section | |
| Named for | Tlayúa Quarry |
The Tlayúa Formation is an Cretaceous Konservat-Lagerstätte near Tepexi de Rodríguez, Puebla, Central Mexico. It consists of three members (Lower, Middle and Upper), spanning the lower Albian of the Early Cretaceous to the lower Cenomanian of the Late Cretaceous. It consists of a series of limestone quarries that preserve lagoonal palaeoenvironments, such as a shelf lagoon, a shallow lagoon surrounded by a penneplain, and a tidal flat. It is notable for preserving high quantities of vertebrate and invertebrate fossils, and is thus considered a Lagerstätte.