The Guasasa Formation is a
geologic formation in
Cuba. It is
Tithonian
In the geological timescale, the Tithonian is the latest age of the Late Jurassic Epoch and the uppermost stage of the Upper Jurassic Series. It spans the time between 152.1 ± 4 Ma and 145.0 ± 4 Ma (million years ago). It is preceded by the K ...
to Early
Valanginian in age and contains fossils of
ammonite
Ammonoids are a group of extinct marine mollusc animals in the subclass Ammonoidea of the class Cephalopoda. These molluscs, commonly referred to as ammonites, are more closely related to living coleoids (i.e., octopuses, squid and cuttlefish) ...
s.
Description
It primarily consists of limestone.
See also
*
List of fossiliferous stratigraphic units in Cuba
The Paleobiology Database lists no known fossiliferous stratigraphic units in Dominica, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines. The database also records no fossiliferous stratigraphic units within several regions of t ...
References
Further reading
* {{cite LSA , last=Bermúdez , first=Pedro J , year=1961 , title=Las formaciones geológicas de Cuba , url=http://paleoarchive.com/literature/Bermudez1961-FormacionesGeologicasCuba.pdf , journal=
Geología Cubana , volume=1 , pages=1–180 , accessdate=2019-02-06
* R. Myczynski. 1989. Ammonite biostratigraphy of the Tithonian of Western Cuba. Annales Societatis Geologorum Poloniae 59:43-125
Geologic formations of Cuba
Jurassic Cuba
Cretaceous Cuba
Shale formations
Limestone formations
Dolomite formations
Shallow marine deposits
Open marine deposits
Formations