''Requienia'' is an extinct
genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...
of
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 preserved ...
saltwater clam, a marine
bivalve molluscs in the order
Hippuritida
Rudists are a group of extinct box-, tube- or ring-shaped marine heterodont bivalves belonging to the order Hippuritida that arose during the Late Jurassic and became so diverse during the Cretaceous that they were major reef-building organis ...
, family
Requieniidae
Requieniidae is a family of rudists, in the order Hippuritida, which lived from 155.7 to 66.043 million years ago.
Taxonomy
Placed by the WoRMS Worms may refer to:
*Worm, an invertebrate animal with a tube-like body and no limbs
Places
*W ...
. These rudists lived 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 ...
period, from the
Valanginian
In the geologic timescale, the Valanginian is an age or stage of the Early or Lower Cretaceous. It spans between 139.8 ± 3.0 Ma and 132.9 ± 2.0 Ma (million years ago). The Valanginian Stage succeeds the Berriasian Stage of the Lower Cretace ...
age (136.4–140.2) to the
Campanian
The Campanian is the fifth of six ages of the Late Cretaceous Epoch on the geologic timescale of the International Commission on Stratigraphy (ICS). In chronostratigraphy, it is the fifth of six stages in the Upper Cretaceous Series. Campani ...
age (70.6–83.5 mya). They were stationary intermediate-level suspension feeders.
Distribution
This genus occurs in the Cretaceous of Albania (collection), Croatia, France, Germany, Hungary, Iraq, Italy, Mexico, Oman, Portugal, Serbia and Montenegro, Spain, Switzerland, Turkey, Ukraine, United States, Venezuela; Jurassic of Hungary.
Species
*''Requienia ammonia''
*''Requienia migliorinii''
*''Requienia renevieri''
References
External links
Universal Biological IndexerPaleobiology Database* Sepkoski, Jac
Sepkoski's Online Genus Database
Hippuritida
Prehistoric bivalve genera
Valanginian genus first appearances
Campanian genus extinctions
Cretaceous animals of Asia
Fossils of Iraq
Fossils of Oman
Fossils of Turkey
Cretaceous molluscs of Europe
Fossils of Albania
Fossils of Croatia
Fossils of France
Fossils of Germany
Fossils of Hungary
Fossils of Italy
Fossils of Portugal
Fossils of Spain
Fossils of Switzerland
Fossils of Ukraine
Fossils of Serbia
Cretaceous animals of North America
Fossils of Mexico
Fossils of the United States
Cretaceous animals of South America
Fossils of Venezuela
Fossil taxa described in 2011
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