Hauterivian

System/ Period	Series/ Epoch	Stage/ Age	Age (Ma)
Paleogene	Paleocene	Danian	younger
Cretaceous	Upper/ Late	Maastrichtian	66.0–72.1
		Campanian	72.1–83.6
		Santonian	83.6–86.3
		Coniacian	86.3–89.8
		Turonian	89.8–93.9
		Cenomanian	93.9–100.5
	Lower/ Early	Albian	100.5–~113.0
		Aptian	~113.0–~125.0
		Barremian	~125.0–~129.4
		Hauterivian	~129.4–~132.9
		Valanginian	~132.9–~139.8
		Berriasian	~139.8–~145.0
Jurassic	Upper/ Late	Tithonian	older
Subdivision of the Cretaceous system according to the IUGS, as of July 2012.

The Hauterivian is, in the geologic timescale, an age in the Early Cretaceous epoch or a stage in the Lower Cretaceous series. It spans the time between 132.9 ± 2 Ma and 129.4 ± 1.5 Ma (million years ago). The Hauterivian is preceded by the Valanginian and succeeded by the Barremian.

Stratigraphic definitions

The Hauterivian was introduced in scientific literature by Swiss geologist Eugène Renevier in 1873. It is named after the Swiss town of Hauterive at the shore of Lake Neuchâtel.

The base of the Hauterivian is defined as the place in the stratigraphic column where the ammonite genus Acanthodiscus first appears. A reference profile for the base (a GSSP) had in 2009 not yet been established. The top of the Hauterivian (the base of the Barremian) is at the first appearance of ammonite species Spitidiscus hugii.

In the ammonite biostratigraphy of the Tethys domain, the Hauterivian contains seven ammonite biozones:

• zone of Pseudothurmannia ohmi
• zone of Balearites balearis
• zone of Plesiospitidiscus ligatus
• zone of Subsaynella sayni
• zone of Lyticoceras nodosoplicatus
• zone of Crioceratites loryi
• zone of Acanthodiscus radiatus

Palaeontology

Birds (avian theropods)

Birds of the Hauterivian
Taxa	Presence	Location	Description	Images
Gallornis	Disputed Berriasian-Hauterivian	Auxerre, Yonne, France		Iberomesornis
Iberomesornis	Hauterivian to Barremian	La Huérgina Formation, Castilla-la-Mancha, Spain

†Ornithischians

Ornithischians of the Hauterivian
Taxa	Presence	Location	Description	Images
Psittacosaurus				Psittacosaurus Valdosaurus
Valdosaurus		Isle of Wight, England	A dryosaurid

Mammalia (mammals)

Mammals of the Hauterivian
Taxa	Presence	Location	Description	Images
Eobaatar	several species from Hauterivian to Albian	Spain, Mongolia

†Plesiosaurs

Plesiosaurs of the Hauterivian
Taxa	Presence	Location	Description	Images
Leptocleidus				Leptocleidus

†Pterosauria

Pterosaurs of the Hauterivian
Taxa	Presence	Location	Description	Images
Dendrorhynchoides	Disputed, considered Tithonian by some

†Sauropods

Sauropods of the Hauterivian
Taxa	Presence	Location	Description	Images
Histriasaurus
Aragosaurus

†Theropods (non-avian)

Non-Avian Theropods of the Hauterivian
Taxa	Presence	Location	Description	Images
Afrovenator				Afrovenator Harpymimus
Ginnareemimus	Valanginian to Hauterivian	Thailand
Harpymimus	Hauterivian to Barremian	Shinekhudug Formation, Eastern Gobi province, Mongolia
Ligabueino

†Ammonites

Ammonites of the Hauterivian
Taxa	Presence	Location	Description	Images
Abrytasites
Acanthodiscus		Argentina
Abrytasites		Czech Republic

References

Literature

• Gradstein, F.M.; Ogg, J.G. & Smith, A.G.; (2004): A Geologic Time Scale 2004, Cambridge University Press.

External links

• GeoWhen Database - Hauterivian
• Mid-Cretaceous timescale, at the website of the subcommission for stratigraphic information of the ICS
• Stratigraphic chart of the Lower Cretaceous, at the website of Norges Network of offshore records of geology and stratigraphy
• Hauterivian Microfossils: 25+ images of Foraminifera