The Arauz Formation is an
Emsian
The Emsian is one of three faunal stages in the Early Devonian Epoch. It lasted from 407.6 ± 2.6 million years ago to 393.3 ± 1.2 million years ago. It was preceded by the Pragian Stage and followed by the Eifelian Stage. It is named after the ...
fossiliferous stratigraphic unit in Spain.
[Arauz Formation]
in the Paleobiology Database
The Paleobiology Database is an online resource for information on the distribution and classification of fossil animals, plants, and microorganisms.
History
The Paleobiology Database (PBDB) originated in the NCEAS-funded Phanerozoic Marine Pale ...
It is a member of the
Abadia Group. It is situated in the
Province of Palencia
Palencia is a province of northern Spain, in the northern part of the autonomous community of Castile and León in the north of the Iberian Peninsula. It is bordered by the provinces of León, Cantabria, Burgos, and Valladolid.
Overview
Of ...
, North Spain. It is in the north of
Natural Park of Fuentes Carrionas and Fuente Cobre-Montaña Palentina where the
Rio Arauz lies. It is from the Devonian of Spain.
[Silur und Devon im Arauz-Gebiet (Prov. Palencia, N-Spanien). H. Jahnke, A. Henn, H. Mader and J. Schweineberg, 1983, Newsletters on Stratigraphy, 13(1), pages 40-66, ]
Fossil content
The following fossils have been reported from the formation:
[
* ]Trilobite
Trilobites (; meaning "three lobes") are extinct marine arthropods that form the class Trilobita. Trilobites form one of the earliest-known groups of arthropods. The first appearance of trilobites in the fossil record defines the base of the At ...
s
** '' Kayserops obsoletus''
** '' Metacanthina cf. asnoensis''
** '' Leonaspis sp.''
** '' Metacanthina sp.''
** '' Odontochile sp.''
** '' Otarion (Maurotarion) sp.''
** '' Xiphogonium sp.''
** Phacopida indet.
* Cephalopod
A cephalopod is any member of the molluscan class Cephalopoda (Greek plural , ; "head-feet") such as a squid, octopus, cuttlefish, or nautilus. These exclusively marine animals are characterized by bilateral body symmetry, a prominent head ...
s
** '' Erbenoceras advolvens''
** '' Fidelites ruppachensis''
** '' Gyroceratites gracilis''
** '' G. aff. laevis''
** '' Latanarcestes (Latanarcestes) noeggerathi''
** '' Mimagoniatites bohemicus''
** '' Mimosphinctes sp.''
* Coral
Corals are marine invertebrates within the class Anthozoa of the phylum Cnidaria. They typically form compact colonies of many identical individual polyps. Coral species include the important reef builders that inhabit tropical oceans and sec ...
s
** '' Cleistodictyum porosum''
** '' Pleurodictyum microspinosum''
** '' Procterodictyum polentinoi''
** '' Combophyllum sp.''
** Rugosa indet.
* Conodont
Conodonts (Greek ''kōnos'', "cone", + ''odont'', "tooth") are an extinct group of agnathan (jawless) vertebrates resembling eels, classified in the class Conodonta. For many years, they were known only from their tooth-like oral elements, which ...
s
** '' Icriodus bilatericrescens''
** '' I. corniger''
** '' I. culicellus''
** '' I. fusiformis''
** '' I. sigmoidalis''
** '' Ozarkodina steinhornensis''
** '' Polygnathus dehiscens''
** '' P. gronbergi''
** '' P. perbonus''
** '' Icriodus sp.''
* Tentaculita
Tentaculita is an extinct class of uncertain placement ranging from the Early Ordovician to the Middle Jurassic. They were suspension feeders with a near worldwide distribution. For a more thorough discussion, see ''Tentaculites''.
The presenc ...
** '' Nowakia barrandei''
** '' N. cancellata''
** '' N. elegans''
** '' N. richteri''
* Rhynchonellata
The Rhynchonellata is a class of Lower Cambrian to Recent articulate brachiopods that combines orders from within the Rhynchonelliformea (Articulata revised) with well developed pedicle attachment. Shell forms vary from those with wide hinge li ...
** '' Arduspirifer arduennensis''
** '' Bifida lepida''
** '' Euryspirifer paradoxus''
** '' Holynatrypa mirabilis''
** '' Mauispirifer scutiformis''
** '' Prokopia bouskai''
** '' Schizophoria vulvaria''
* Strophomenata
Strophomenata is an extinct class of brachiopods in the subphylum Rhynchonelliformea.
Orders Billingsellida
An order that contains the suborder Clitambonitidina (and others?) .
Orthotetida
An order or superfamily that includes the Chilidiopsoi ...
** '' Bojodouvillina (Bojodouvillina) morzakeci''
** '' Crinostrophia aff. elegans''
** '' Eodevonaria cf. jahnkei''
** '' Plectodonta (Dalejodiscus) minor''
** '' Strophochonetes sp.''
See also
* List of fossiliferous stratigraphic units in Spain
References
{{reflist
Geologic formations of Spain
Devonian System of Europe
Paleozoic Spain
Emsian Stage
Marl formations
Limestone formations
Shale formations
Fossiliferous stratigraphic units of Europe
Paleontology in Spain
Formations