Albian

Albian (French "Albion", from Alba = Aube in France) is a stage of the Cretaceous period.

Albian is a term proposed in 1842 by A. d'Orbigny for that stage of the Cretaceous system which comes above (later) the Aptian and below (before) the Cenomanian (Pal. France. Cret. ii.). Approximate time range is 112.0 ± 1.0 Ma to 99.6 ± 0.9 Ma (million years ago).

The following representatives of the Albian stage are worthy of notice: the gaize and phosphatic beds of Argonne and Bray in France; the Flammenmergel of North Germany; the lignites of Iltrillas in Spain; the Upper Sandstones of Nubia, and the Fredericksburg beds of North America.

Vertebrate Fauna

Ankylosaurs

Cartilaginous Fish

Mammalia

Pterosauria

Invertebrate Fauna

Ammonites

Ammonitida

*"Moffitites"

Originating in Lower Albian Strata

The following is a list of Ammonite genera whose fossils are geochronologically found first in "lower Albian strata". These genera may survive into later portions of the Ablian stage, or even into later geological stages. This list should not be thought of in terms of the lifespan of the genera included.

*"Aioloceras"
*"Anacleoniceras"
*"Anadesmoceras"
*"Anisoceras"
*"Arcthoplites"
*"Brancoceras"
*"Brewericeras"
*"Cleoniceras"
*"Cymahoplites"
*"Douvilleiceras"
*"Epileymeriella"
*"Eubranoceras"
*"Farnhamia"
*"Hoplites"
*"Kossmatella"
*"Labeceras"
*"Leconteites"
*"Lemuroceras"
*"Leymeriella"
*"Lyelliceras"
*"Neobibolites"
*"Otohoplites"
*"Oxytropidoceras"
*"Paracanthoplites"
*"Parasilesites"
*"Parengonoceras"
*"Plictetia"
*"Prohelicoceras"
*"Proleymeriella"
*"Prolyelliceras"
*"Protohoplites"
*"Pseudoleymeriella"
*"Pseudosonneratia"
*"Puzosia"
*"Puzosigella"
*"Rhytidohoplites"
*"Rossalites"
*"Silesitoides"
*"Sokolovites"
*"Sonneratia"
*"Tegoceras"
*"Tetrahoplites"
*"Tetrahoplitoides"
*"Zealandites"

Originating in Middle Albian Strata

The following is a list of Ammonite genera whose fossils are geochronologically found first in "middle Albian strata". These genera may survive into later portions of the Ablian stage, or even into later geological stages. This list should not be thought of in terms of the lifespan of the genera included.

*"Anagaudryceras"
*"Anahoplites"
*"Astiericeras"
*"Dimorphoplites"
*"Dipoloceras"
*"Dipoloceroides"
*"Engonoceras"
*"Epihoplites"
*"Euhoplites"
*"Falciferella"
*"Falloticeras"
*"Gastroplites"
*"Hamitoides"
*"Hysteroceras"
*"Isohoplites"
*"Manuaniceras"
*"Mojsisoviczia"
*"Mortoniceras"
*"Ostlingoceras"
*"Protengonoceras"
*"Proturrilitoides"
*"Pseudhelicoceras"
*"Scaphamites"
*"Subarcthoplites"
*"Sulcohoplites"
*"Turrilitoides"
*"Venezoliceras"
*"Zuluscaphites"

Originating in Upper Albian Strata

The following is a list of Ammonite genera whose fossils are geochronologically found first in "upper Albian strata". These genera may survive into later portions of the Ablian stage, or even into later geological stages. This list should not be thought of in terms of the lifespan of the genera included.

*"Adkinsites"
*"Arestoceras"
*"Beudantiella"
*"Bhimaites"
*"Borissiakoceras"
*"Cainoceras"
*"Callihoplites"
*"Cantabrigites"
*"Cenisella"
*"Cottreauites"
*"Cyrtochilus"
*"Deiradoceras"
*"Diplasioceras"
*"Discohoplites"
*"Ellipsoceras"
*"Elobiceras"
*"Eogunnarites"
*"Eopachydiscus"
*"Eoscaphites"
*"Erioliceras"
*"Ficheuria"
*"Flickia"
*"Gaudryceras"
*"Gazdaganites"
*"Goodhallites"
*"Hemiptychoceras"
*"Hengestites"
*"Hypengonoceras"
*"Hyphoplites"
*"Idiohamites"
*"Karamaiceras"
*"Karamaites"
*"Koloceras"
*"Lechites"
*"Lepthoplites"
*"Lytodiscoides"
*"Mantelliceras"
*"Mariella"
*"Metengonoceras"
*"Myloceras"
*"Neogastroplites"
*"Neoharpoceras"
*"Neokentoceras"
*"Neophlycticeras"
*"Pachydesmoceras"
*"Paradolphia"
*"Paraturrilites"
*"Pervinquieria"
*"Plesiohamites"
*"Plesioturrilites"
*"Pleurohoplites"
*"Prohysteroceras"
*"Psilohamites"
*"Rusoceras"
*"Salaziceras"
*"Saltericeras"
*"Scaphites"
*"Schloenbachia"
*"Sciponoceras"
*"Semenovites"
*"Spathiceras"
*"Stoliczkaia"
*"Stomohamites"
*"Worthoceras"

Belemnites

Nautiloids

Phylloceratida

*"Carinophylloceras"

ee also

* List of fossil sites "(with link directory)"

References

External links

* [http://www.stratigraphy.org/geowhen/stages/Albian.html GeoWhen Database - Albian]
* [http://www.hants.gov.uk/museum/geology/periods/albian.html Albian Stage, Cretaceous Period in Hampshire]