''Serratolamna'' is an
extinct
Extinction is the termination of an organism by the death of its Endling, last member. A taxon may become Functional extinction, functionally extinct before the death of its last member if it loses the capacity to Reproduction, reproduce and ...
genus of
mackerel shark
The Lamniformes (, from Greek ''lamna'' "fish of prey") are an order of sharks commonly known as mackerel sharks (which may also refer specifically to the family Lamnidae). It includes some of the most familiar species of sharks, such as the g ...
s that is placed in the
monotypic
In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unisp ...
family Serratolamnidae.
Species
Species within this genus include:
[
*''Serratolamna africana''
*''Serratolamna amonensis''
*''Serratolamna aschersoni''
*''Serratolamna caraibaea''
*''Serratolamna gafsana'' White, 1926
*''Serratolamna khderii''
*''Serratolamna lerichei'' (Casier, 1946)
*''Serratolamna serrata'' (Agassiz, 1843) ]
Description
The fossil
A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserve ...
s of ''Serratolamna'' mainly consist of teeth and scattered vertebrae. The teeth are asymmetrical with smooth crowns and multiple cusplets. The basal margin of the roots are V-shaped.
Distribution
Fossils of species within this genus have been found in Late Cretaceous of Cuba,
See also
* Prehistoric fish
__NOTOC__
Prehistoric fish are early fish that are known only from fossil records. They are the earliest known vertebrates, and include the first and extinct fish that lived through the Cambrian to the Quaternary. The study of prehistoric fish is ...
References
Prehistoric Lamniformes
Late Cretaceous sharks
Eocene sharks
Paleocene sharks
Fossils of France
Fossils of Sweden
Mooreville Chalk
Fossil taxa described in 1991
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