PBDB Collection

Layer F, Saint-Chinian, Montagne Noire (Ordovician of France)

Also known as Saint Chinian Faunizone F

Where: Languedoc-Roussillon, France (43.4° N, 3.0° E: paleocoordinates 60.3° S, 101.4° E)

• coordinate based on nearby landmark

When: Euloma filacovi trilobite zone, F Member (Saint-Chinian Formation), Tremadocian (485.4 - 477.7 Ma)

• faunizone “F” = IGCP TS 1c-d

•

•Was Schistes de Saint-Chinian, Layer F

Environment/lithology: deep subtidal shelf; gray claystone and lithified, bioturbated, nodular siltstone

• a monotonous succession of dark-grey claystones, and green siltstones with fine to mediumgrained sandstone intercalations and silicious nodules reaching a thickness greater than 500 m. Although the sandstone intercalations are often graded and exhibit erosive bases, bioturbation is common and primary sedimentary features are often lacking (Alvaro et al.2003).

Size class: macrofossils

Preservation: cast, original aragonite

Reposited in the AMNH

Primary reference: B. Kröger and D. H. Evans. 2011. Review and paleoecological analysis of the late Tremadocian – early Floian (Early Ordovician) cephalopod fauna of the Montagne Noire, France. Fossil Record 14(1):5-34 [B. Kröger/B. Kröger]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 101705: authorized by Björn Kröger, entered by Björn Kröger on 30.12.2010, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

• FSL specimens

Show authors, comments, and common names

Stenuroidea
Proturina - Eophiuridae	"Palaeura jacobi n. sp." = Pradesura jacobi³ "Palaeura jacobi n. sp." = Pradesura jacobi³ Thoral 1935
Somasteroidea
- Chinianasteridae	Thoralaster spiculiformis n. gen. n. sp.¹, Villebrunaster thorali², Chinianaster levyi n. gen. n. sp.³ Thoralaster spiculiformis n. gen. n. sp.¹ Dean Shackleton 2005 Among specimens originally id'ed as Chinianaster levyi Villebrunaster thorali² Spencer 1951 Among specimens originally id'ed as Chinianaster levyi Chinianaster levyi n. gen. n. sp.³ Thoral 1935
Gastropoda
Bellerophontida - Tropidodiscidae	Peelerophon oehlerti⁴ Peelerophon oehlerti⁴ Bergeron 1889 snail "Environs de Saint-Chinian"
Bellerophontida - Sinuitidae	Sinuites sowerbyi⁴ Sinuites sowerbyi⁴ Perner 1903 snail "Environs de Saint-Chinian"
Cephalopoda
Ellesmerocerida - Rioceratidae	Rioceras escandei Rioceras escandei Thoral 1935
Ellesmerocerida - Eothinoceratidae	Saloceras murvielense Saloceras murvielense Kröger and Evans 2011
Orthocerida - Baltoceratidae	Annbactroceras martyi Annbactroceras martyi Thoral 1935

¹Dean Shackleton 2005; ²Spencer 1951; ³Thoral 1935; ⁴Yochelson 1982