Layer F, Babeau-Bouldoux (Ordovician of France)

Also known as Was: Layer F, Schistes de Saint-Chinian Fm., Saint-Chinian, Montagne Noire, France

Where: Montagne Noire, France (43.4° N, 2.9° E: paleocoordinates 63.0° S, 97.4° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Euloma filacovi trilobite zone, F Member (Saint-Chinian Formation), Floian (477.7 - 470.0 Ma)

• Was Schistes de Saint-Chinian, Layer F - Asaphelina barroisi zone, Arenig

•Uppermost Tremadoc. However, F is in Euloma filacovi zone, which is lowermost Floian.

• member-level stratigraphic resolution

Environment/lithology: offshore; lithified, concretionary, micaceous, sandy, cherty/siliceous shale and lithified sandstone

• Occasionally sandy, micaceous, shale with nodular chert, fossiliferous layers and occasional sandstone beds

Size classes: macrofossils, mesofossils

Preservation: mold/impression

Primary reference: J. C. Capera, R. Courtessole, and J. Pillet. 1978. Contribution à l'étude de l'Ordovicien inférieur de la Montagne Noire : biostratigraphie et révision des Agnostida. Annales de la Société Géologique du Nord 98(1):67-87 [A. Miller/P. Novack-Gottshall/L. Villier]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 20827: authorized by Arnold Miller, entered by Phil Novack-Gottshall on 10.06.2002, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

• Was a compilation of lists from Saint-Chinian, Babeau, Bouldon, and Prades-sur-Vernazobre, Montagne Noire, France
Show authors, comments, and common names
Somasteroidea
  - Chinianasteridae
Chinianaster levyi
Chinianaster levyi Thoral 1935
Stylophora
 Cornuta -
Galliaecystis lignieresi
 Cornuta - Phyllocystidae
Phyllocystis blayaci
 Cornuta -
Amygdalotheca griffei
 Cornuta - Cothurnocystidae
Chauvelicystis spinosa, Scotiaecystis griffei, Cothurnocystis felinensis
 Mitrata -
Peltocystis sp.
 Mitrata - Kirkocystidae
Anatifopsis trapeziformis
 Mitrata -
Chinianocarpos thorali
Crinoidea
 Dendrocrinida - Dendrocrinidae
Aetocrinus moorei
 Rhombifera - Macrocystellidae
"Mimocystites azaisi" = Macrocystella azaisi
"Mimocystites azaisi" = Macrocystella azaisi Thoral 1935
Eocrinoidea
  - Lingulocystidae
Lingulocystis elongata
  -
Balantiocystis sp.
Balantiocystis sp. Chauvel 1966
Soluta
 Syringocrinida - Minervaecystidae
Minervaecystis vidali
Pterobranchia
 Dendroidea - Acanthograptidae
Dictyonema sp.
Dictyonema sp. Hall 1851 graptolite
 Graptoloidea - Phyllograptidae
Tetragraptus sp.
Tetragraptus sp. Salter 1863 graptolite
 Graptoloidea - Dichograptidae
Clonograptus sp., Calamograptus sp.
Clonograptus sp. Nicholson 1873 graptolite
Calamograptus sp. graptolite
Lingulata
 Lingulida - Obolidae
Spondyglossella sp.
 Acrotretida - Acrotretidae
Conotreta sp.
Conotreta sp. Walcott 1889
Rhynchonellata
 Orthida - Orthidae
Orthambonites sp.
Orthambonites sp. Pander 1830
 Orthida - Archaeorthidae
Pleurorthis sp.
Pleurorthis sp. Cooper 1956
Gastropoda
 Bellerophontida -
Thoralispira occitana1
Thoralispira occitana1 Horný and Vizcaïno 1995 snail
 Bellerophontida - Tropidodiscidae
Peelerophon oehlerti2
Peelerophon oehlerti2 Bergeron 1889 snail
Bivalvia
 Afghanodesmatida - Tironuculidae
Ekaterodonta courtessolei
 Nuculanida - Malletiidae
Myoplusia sp.
Myoplusia sp. Neumayr 1884 clam
 Nuculida - Praenuculidae
Synek sp.
Synek sp. Barrande 1881 clam
 Modiomorphida - Modiomorphidae
Redonia sp.
Redonia sp. Rouault 1851 clam
 Cardioni - Coxiconchiidae
"Coxiconcha guiraudi" = Coxiconchia
"Coxiconcha guiraudi" = Coxiconchia clam
 Cardioni - Babinkidae
Babinka prima
Babinka prima Barrande 1881 clam
 Uniomorphi - Thoraliidae
"Miquelana languedociana" = Thoralia languedociana
"Miquelana languedociana" = Thoralia languedociana Thoral 1935 clam
 Unioni - Lyrodesmatidae
Noradonta sp.
Noradonta sp. Pojeta and Gilbert-Tomlinson 1977 clam
Artiopoda
 Agnostida - Metagnostidae
Homagnostoides ferralsensis, ? Geragnostus mediterraneus, Geragnostus howelli
Trilobita
 Olenida - Eulomidae
Euloma (Euloma) filacovi
 Phacopida - Pharostomatidae
Pharostomina languedocensis
 Phacopida - Cheiruridae
"Pseudosphaerexochus (Pateraspis) prepater" = Courtessolium prepater
"Pseudosphaerexochus (Pateraspis) prepater" = Courtessolium prepater Courtessole and Pillet 1975 trilobite
  - Isocolidae
Thoralocolus sp., Pradesia sp.
Thoralocolus sp. Pillet and Courtessole 1985 trilobite
Pradesia sp. Thoral 1935 trilobite
 Harpetida - Harpididae
Harpides villebruni
 Trinucleida - Raphiophoridae
Ampyx priscus
Ampyx priscus Thoral 1935 trilobite
 Asaphida - Hungaiidae
Asaphopsoides villebruni
 Asaphida - Nileidae
Aocaspis sp., Illaenopsis griffei, Kodymaspis macrophtalmus, Symphysurus angustatus
Aocaspis sp. Dolambi and Gond 1992 trilobite
Symphysurus angustatus Sars and Boeck 1838 trilobite
Symphysurus angustatus angustatus
 Asaphida - Cyclopygidae
"Aeglina azaisi" = Cyclopyge, Novakella sp.
"Aeglina azaisi" = Cyclopyge trilobite
"Aeglina (= Cyclopyge)" azaisi
Novakella sp. Whittard 1961 trilobite
 Asaphida - Taihungshaniidae
Asaphellina barroisi
 Asaphida - Asaphidae
"Niobella subinsignis" = Niobe (Niobella), Bohemopyge discretus, "Megistaspis sp." = Megistaspis, ""Megalaspis" goniopleurae" = Megistaspis, Megistaspis (Ekeraspis) filacovi, Paramegalaspis frequens, Paramegalaspis immarginata, Paramegalaspis guiraudi, ? Asaphellus sp.
"Niobella subinsignis" = Niobe (Niobella) trilobite
"Megistaspis sp." = Megistaspis Jaanusson 1956 trilobite
""Megalaspis" goniopleurae" = Megistaspis trilobite
? Asaphellus sp. Callaway 1877 trilobite
 Asaphida - Remopleurididae
Deanokephalus sp., Apatokephalus brevifrons
Deanokephalus sp. Pillet 1992 trilobite
Scyphozoa
 Conulariida - Conulariidae
Eoconularia azaisi
 Ichnofossils -
""Vexillum" rouvillei" = Phycodes circinatum
""Vexillum" rouvillei" = Phycodes circinatum Richter 1850
Probably an obsolete name of an alga, but definitely not a Neogastropod
1Horný and Vizcaïno 1995; 2Yochelson 1982