Blacourt Fm., Griset Mbr., vicinity of Ferques, Bas-Boulonnais (Devonian of France)

Where: France (50.8° N, 1.8° E: paleocoordinates 24.4° S, 4.3° E)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Griset Member (Blacourt Formation), Givetian (387.7 - 382.7 Ma)

• Lower varcus ensensis conodont zone

• member-level stratigraphic resolution

Environment/lithology: marine; black limestone and reef rocks

• "The Blacourt Formation is a compact, massive bedded, black fossiliferous marine limestone, with argillaceous layers and some small reefs in the Griset Member. The lower [Cambreseque] and upper [Patures] member of the Beaullieu Formation are mainly terrigenous, except for its lowest beds, the so-called Cedule Limestone. The middle [Noces] member consists of dolomite lenses, passing upward into shales, and to a reef build-up capped by fossiliferous limestones. The base of the lower [Fiennes] member of the succeeding Ferques Formation is a biostromal dolomite overlain by yellow, then brownis-dark dolomite and dolomitic sandstones. These are overlain by the fully marine fossiliferous Ferques Limestone. The lower part of the [second-from-bottom] Bois Member and the upper part of the [third-from-bottom] Parisienne Member are biostromal. In the upper [Gris] member, sediments are more argillaceous..."

Primary reference: P. Morzadec, D. Brice, C. Cygan, R. Feist, C. Majeste-Menjoulas, F. Paris, and P. R. Racheboeuf. 2000. The Devonian of France: a tentative tie with the GSSP of the Devonian stages. Courier Forschungs-Institut Senckenberg 225:115-129 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 38681: authorized by Michael Foote, entered by Michael Foote on 28.04.2004, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Crinoidea
  -
Crinoidea indet.3 Miller 1821 Sea lily
Le Menn has given formal names to several columnal taxa.
Trilobita
 Phacopida - Phacopidae
"Phacops" sp.7 Emmrich 1839 trilobite
 Proetida - Proetidae
Deuteropoda
  -
Ostracoda indet.4 Latreille 1802 ostracod
Ostracoda
 Podocopida - Bythocyprididae
Bythocypris "sp. G1"4 Brady 1880 ostracod
 Podocopida - Bairdiidae
Bairdia "cf. sp. G2"4 M'Coy 1844 ostracod
Bairdia "sp. 1"4 M'Coy 1844 ostracod
 Podocopida - Acratiidae
Acratia "cf. sp. G2"4 Delo 1930 ostracod
Acratia "sp. 3"4 Delo 1930 ostracod
Acratia "sp. G1"4 Delo 1930 ostracod
 Podocopida - Bairdiocyprididae
Bairdiocypris sp.4 Kegel 1932 ostracod
? Bairdiocypris sp.4 Kegel 1932 ostracod
Bairdiocypris "sp. 2"4 Kegel 1932 ostracod
Bairdiocypris "sp. 1"4 Kegel 1932 ostracod
Bairdiocypris rhenana4 Kegel 1932 ostracod
Praepilatina sp.4 Polenova 1970 ostracod
 Podocopida - Microcheilinellidae
 Podocopida - Bythocytheridae
 Podocopida -
Podocopina indet.4 Sars 1866 ostracod
 Podocopida - Macrocyprididae
 Podocopida - Bufinidae
Bufina aff. abbreviata4 Peterson 1966 ostracod
 Podocopida - Healdiidae
Cytherellina sp.4 Jones and Holl 1869 ostracod
Cytherellina "sp. 2"4 Jones and Holl 1869 ostracod
 Podocopida - Quasillitidae
Quasillites "sp. 1"4 Coryell and Malkin 1936 ostracod
Jenningsina aff. catenulata4 Kesling and Chilman 1978 ostracod
 Palaeocopida -
 Palaeocopida - Graviidae
? Pribylites "sp. 3I"4 Pokorny 1950 ostracod
Pribylites "sp. 1"4 Pokorny 1950 ostracod
 Palaeocopida - Hollinidae
? Falsipollex "sp. 3G"4 Kesling and McMillan 1951 ostracod
Ctenoloculina "sp. 3G"4 Bassler 1941 ostracod
 Palaeocopida - Aparchitidae
Coeloenellina "sp. A"4 Polenova 1952 ostracod
? Coeloenellina "sp. 3K"4 Polenova 1952 ostracod
Coeloenellina "sp. B"4 Polenova 1952 ostracod
 Palaeocopida - Aparchitellinidae
 Palaeocopida - Aechminellidae
 Palaeocopida - Drepanellidae
 Palaeocopida - Youngiellidae
 Palaeocopida - Cryptophyllidae
Cryptophyllus "sp. G"4 Levinson 1951 ostracod
Cryptophyllus "sp. 3"4 Levinson 1951 ostracod
 Palaeocopida - Amphissitidae
Amphissites sp.4 Girty 1910 ostracod
 Palaeocopida - Pachydomellidae
 Palaeocopida - Leperditellidae
? Coryellina sp.4 Kellett 1935 ostracod
 Palaeocopida - Pribylitidae
Pribylitidae indet.4 Pokorny 1958 ostracod
sp. 3Q
 Palaeocopida -
 Palaeocopida - Paraparchitidae
Paraparchitidae indet.4 Scott 1959 ostracod
Paraparchites "sp. G"4 Ulrich and Bassler 1906 ostracod
Paraparchites "sp. 1"4 Ulrich and Bassler 1906 ostracod
Paraparchites "sp. G prime"4 Ulrich and Bassler 1906 ostracod
sp. G'
 Palaeocopida - Coelonellidae
Coelonella "sp. 1"4 Stewart 1936 ostracod
 Palaeocopida - Knoxitidae
 Palaeocopida - Serenididae
"? Uchtovia sp." = Sargentina4
"? Uchtovia sp." = Sargentina4 ostracod
 Palaeocopida - Kloedenellidae
 Platycopida - Cavellinidae
? Sulcella sp.4 ostracod
Sulcella rhenana4 ostracod
Cavellina "sp. 3L"4 Coryell 1928 ostracod
Cavellina "sp. 3M"4 Coryell 1928 ostracod
? Cavellina "sp. 2"4 Coryell 1928 ostracod
Cavellina "cf. sp. II"4 Coryell 1928 ostracod
 Platycopida - Lichviniidae
Evlanella sp.4 ostracod
Evlanella mitis4 ostracod
 Metacopida - Rishonidae
  - Buregiidae
Buregia "sp. G"4 ostracod
Stenolaemata
 Cyclostomata - Corynotrypidae
 Cystoporata - Fistuliporidae
 Rhabdomesida - Rhabdomesidae
Rhynchonellata
 Spiriferinida - Cyrtinidae
 Rhynchonellida - Trigonirhynchiidae
 Rhynchonellida - Yunnanellidae
 Spiriferida - Spinocyrtiidae
 Spiriferida - Reticulariidae
 Atrypida - Atrypidae
Spinatrypa "sp. G"2 Stainbrook 1951
 Terebratulida - Stringocephalidae
Stringocephalus burtini2 Defrance 1825
 Athyridida - Athyrididae
Strophomenata
 Strophomenida - Chonetidae
 Productida - Productellidae
Productella subaculeata2 Murchison 1840
Rostroconchia
 Conocardiida -
Conocardioidea sp.9 Miller 1889
Stromatoporoidea
 Actinostromatida - Actinostromatidae
Bifariostroma bifarium5 stromatoporoid sponge
Actinostroma cf. perlaminatum5 stromatoporoid sponge
Actinostroma clathratum5 stromatoporoid sponge
Actinostroma papillosum5 stromatoporoid sponge
Actinostroma cf. devonense5 stromatoporoid sponge
Actinostroma septatum5 stromatoporoid sponge
Actinostroma tabulatum5 stromatoporoid sponge
? Actinostroma cf. sertiforme5 stromatoporoid sponge
Actinostroma stellulatum5 Nicholson 1885 stromatoporoid sponge
 Syringostromatida - Syringostromatidae
Parallelopora sp.5 Bargatzky 1881 stromatoporoid sponge
 Syringostromatida - Coenostromatidae
Habrostroma incrustans5 stromatoporoid sponge
 Syringostromatida - Stachyoditidae
Stachyodes verticillata5 stromatoporoid sponge
 Stromatoporellida - Stromatoporellidae
Stictostroma curiosa5 stromatoporoid sponge
Dendrostroma cf. oculatum5 stromatoporoid sponge
? Clathrocoilona cf. crassitexta5 Lecompte 1951 stromatoporoid sponge
Clathrocoilona spissa5 Lecompte 1951 stromatoporoid sponge
Clathrocoilona obliterata5 Lecompte 1951 stromatoporoid sponge
"Stromatoporella granulata" = Stromatoporella5 stromatoporoid sponge
"Pseudostictostroma sp." = Stromatoporella5 Nicholson 1886 stromatoporoid sponge
 Stromatoporellida - Trupetostromatidae
Hermatostroma "sp. 2"5 Nicholson 1886 stromatoporoid sponge
Hermatostroma parksi5 stromatoporoid sponge
Hermatostroma cf. cimacense5 stromatoporoid sponge
Hermatostroma maillieuri5 stromatoporoid sponge
Hermatostroma "sp. 1"5 Nicholson 1886 stromatoporoid sponge
Hermatostroma thomasi5 stromatoporoid sponge
Hermatostroma crassum5 stromatoporoid sponge
Hermatostroma cf. pustulosum5 stromatoporoid sponge
? Trupetostroma cf. micropertusum5 stromatoporoid sponge
? Trupetostroma cf. bassleri5 stromatoporoid sponge
Synthetostroma cf. actinostromoides5 Lecompte 1951 stromatoporoid sponge
 Stromatoporida - Ferestromatoporidae
Ferestromatopora sp.5 Yavorsky 1955 stromatoporoid sponge
 Stromatoporida - Stromatoporidae
Stromatopora concentrica5 stromatoporoid sponge
? Stromatopora cf. laminosa5 stromatoporoid sponge
"Stromatopora" colliculata5 stromatoporoid sponge
Stromatopora huepschii5 Bargatzky 1881 stromatoporoid sponge
 Stromatoporida - Syringostromellidae
Salairella cf. buecheliensis5 stromatoporoid sponge
 Clathrodictyida - Atelodictyidae
Atelodictyon strictum5 stromatoporoid sponge
 Clathrodictyida - Gerronostromatidae
Gerronostroma lemniscum5 stromatoporoid sponge
 Clathrodictyida - Tienodictyidae
 Clathrodictyida - Clathrodictyidae
Clathrodictyon cf. amygdaloides5 stromatoporoid sponge
 Clathrodictyida - Anostylostromatidae
? Anostylostroma cf. retiforme5 stromatoporoid sponge
Anthozoa
 Stauriida - Phillipsastreidae
 Stauriida - Disphyllidae
Spinophyllum arduum8, "Cyathophyllum cf. briceae" = Argutastrea briceae8, "Pseudohexagonaria amanshausesri" = Argutastrea8, "Pseudohexagonaria glinskii" = Argutastrea8, Columnaria cf. junkerbergiana8, Disphyllia wangi8, Disphyllia hamoriensis8, Disphyllia periclada8, Disphyllia magnei8
Spinophyllum arduum8 Lütte 1985 horn coral
"Cyathophyllum cf. briceae" = Argutastrea briceae8 Rohart 1988 horn coral
"Pseudohexagonaria amanshausesri" = Argutastrea8 horn coral
"Pseudohexagonaria glinskii" = Argutastrea8 horn coral
Disphyllia wangi8 horn coral
Disphyllia magnei8 horn coral
 Stauriida - Stringophyllidae
"Stringophyllum isactis" = Sociophyllum isactis8, "Gaofengophyllum cf. longiseptatum" = Sociophyllum8
"Stringophyllum isactis" = Sociophyllum isactis8 Frech 1886 horn coral
"Gaofengophyllum cf. longiseptatum" = Sociophyllum8 horn coral
 Stauriida - Ptenophyllidae
 Cystiphyllida - Digonophyllidae
 Cystiphyllida - Cystiphyllidae
 Rugosa -
 Rugosa - Charactophyllidae
 Auloporida - Syringoporidae
Chia polonica6 tabulate coral
 Auloporida - Aulocystidae
Aulocystis jurkowicensis6 tabulate coral
 Auloporida - Romingeriidae
Remesia crispa6 tabulate coral
 Auloporida - Auloporidae
Aulopora stasinskae6 tabulate coral
Aulopora ex gr. parva6 tabulate coral