''Kossmaticeras'' is an extinct

ammonoid 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) ...

genus belonging to the desmoceratacean family

Kossmaticeratidae Kossmaticeratidae is an extinct ammonoid family belonging to the order Ammonitida. Subfamilies and genera Kossmaticeratidae includes two subfamilies and eight genera: * Kossmaticeratinae Spath, 1922 ** '' Grossouvrites'' Kilian and Reboul, 1909 ...

. Species in this genus were fast-moving nektonic carnivores. They lived during the Late Cretaceous, from upper

Turonian The Turonian is, in the ICS' geologic timescale, the second age in the Late Cretaceous Epoch, or a stage in the Upper Cretaceous Series. It spans the time between 93.9 ± 0.8 Ma and 89.8 ± 1 Ma (million years ago). The Turonian is preceded by t ...

to upper

Maastrichtian The Maastrichtian () is, in the ICS geologic timescale, the latest age (uppermost stage) of the Late Cretaceous Epoch or Upper Cretaceous Series, the Cretaceous Period or System, and of the Mesozoic Era or Erathem. It spanned the interval from ...

age.Sepkoski, Jac
Sepkoski's Online Genus Database – Cephalopoda
/ref> The type species of the genus is ''Ammonites theobaldianus''.

Subgenera and species

* ''Kossmaticeras (Karapadites)'' Collignon, 1954 ** ''Kossmaticeras (Karapadites) besairieri'' Collignon, 1954 ** ''Kossmaticeras (Karapadites) karapadensis'' Kossmat, 1897 ** ''Kossmaticeras (Karapadites) madrasinus'' Stoliczka, 1865 ** ''Kossmaticeras (Karapadites) planissimus'' Collignon, 1966 * ''Kossmaticeras (Kossmaticeras)'' de Grossouvre, 1901 ** ''Kossmaticeras (Kossmaticeras) inornatum'' Collignon, 1966 ** ''Kossmaticeras (Kossmaticeras) jeletzkyi'' Collignon, 1965 ** ''Kossmaticeras (Kossmaticeras) jonesi'' Collignon, 1965 ** ''Kossmaticeras (Kossmaticeras) kilenensis'' Alsen, 2018 ** ''Kossmaticeras (Kossmaticeras) sakondryense'' Collignon, 1954 ** ''Kossmaticeras (Kossmaticeras) sparsicostatum'' Kossmat, 1897 ** ''Kossmaticeras (Kossmaticeras) theobaldianum'' Stolickza, 1865 * ''Kossmaticeras (Natalites)'' Collignon, 1954 ** ''Kossmaticeras (Natalites) africanus'' van Hoepen, 1920 ** ''Kossmaticeras (Natalites) elegans'' Kennedy, 1985 ** ''Kossmaticeras (Natalites) similis'' Spath, 1921 ** ''Kossmaticeras (Natalites) canadense'' McLearn, 1972

Distribution

Fossils of species within this genus have been found in the

Cretaceous The Cretaceous ( ) is a geological period that lasted from about 145 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest. At around 79 million years, it is the longest geological period of th ...

sediments of Antarctica, Australia, Canada, Chile, India, Madagascar, New Zealand and South Africa.

Subgenera and species

Distribution

References

Further reading