Chrtníky quarry, Unit 7 [Bilá Fm] (Cretaceous of Czech Republic)

Where: Czech Republic (50.0° N, 15.6° E: paleocoordinates 40.1° N, 14.6° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Bilá Formation, Early/Lower Turonian (93.5 - 89.3 Ma)

• STRATIGRAPHIC RELATIONS: From the Bilá Fm, which overlies the Korycany Mbr of the Peruc-Korycany Fm. AGE: Early Turonian, presumably on the basis of foraminiferal and macrofossils biostratigraphy. STRATIGRAPHIC POSITION: From a deep depression, named the Giant Channel, situated in the eastern part of the quarry. Collection is from Unit 7 (bioclastic limestone to marlstone), which is about 35 cm thick.

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, white, yellow, argillaceous limestone

• SPECIFIC LITHOLOGY: Yellowish to whitish hard clayey limestone. LITHIFICATION: Lithified, on the basis of facies description and figured specimens.

Size class: macrofossils

Preservation: cast, replaced with phosphate

Collected by Vodrazka & Zitt

Collection methods: bulk, surface (in situ),

• COLLETORS: Vodrazka & Zitt. REPOSITORY: Institute of Geology (Academy of Sciences of the Czech Republic) in Prague.

Primary reference: J. Zitt, R. Vodrázka, L. Hradecká, M. Svobodová, and K. Zágorsek. 2006. Late Cretaceous environments and communities as recorded at Chrtníky (Bohemian Cretaceous Basin, Czech Republic). Bulletin of Geosciences 81(1):43-79 [A. Hendy/A. Hendy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 90516: authorized by Austin Hendy, entered by Austin Hendy on 04.08.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for macro invertebrates and microfossils. NOMENCLATURE: Not an authoritative publication, but with relatively modern nomenclature and species-resolution identifications.
Echinoidea
 Cidaroida - Psychocidaridae
Tylocidaris sorigneti pencil urchin
unclassified
  -
Asteroidea
 Valvatida - Pycinasteridae
Pycinaster sp. Spencer 1907 sea star
 Valvatida - Chaetasteridae
Arthraster cristatus Spencer 1907 sea star
 Valvatida - Stauranderasteridae
"Stauranderaster aff. bulbiferus" = Manfredaster bulbiferus, Stauranderaster sp.
"Stauranderaster aff. bulbiferus" = Manfredaster bulbiferus Forbes 1848 sea star
Stauranderaster sp. Spencer 1907 sea star
 Valvatida - Goniasteridae
Metopaster sp. Sladen 1893 sea star
Metopaster thoracifer Geinitz 1871 sea star
Nymphaster sp. Sladen 1889 sea star
Haccourtaster hrbac Zitt 2005 sea star
 Valvatida - Sphaerasteridae
Valettaster ocellatus Forbes 1848 sea star
Ophiuroidea
  -
Ophiuroidea indet. Gray 1840 brittle star
Crinoidea
 Isocrinida - Isocrinidae
Isocrinus cf. lanceolatus Roemer 1840 Sea lily
 Cyrtocrinida - Holopodidae
Cyathidium aff. depressum Sieverts 1932 Sea lily
Chondrichthyes
 Lamniformes - Alopiidae
Paranomotodon angustidens Reuss 1845 thresher shark
 Lamniformes - Otodontidae
Cretalamna appendiculata Agassiz 1835 mackerel shark
 Lamniformes - Anacoracidae
Squalicorax falcatus Agassiz 1843 crow shark
 Lamniformes - Carchariidae
 Hybodontiformes - Ptychodontidae
Pteraspidomorpha
  - Thelodontidae
Craniata
 Craniida - Craniidae
Rhynchonellata
 Rhynchonellida - Cyclothyrididae
 Terebratulida - Cancellothyrididae
Terebratulina chrysalis Schlotheim 1813
 Terebratulida - Cnismatocentridae
"? Terebratula biplicata" = Nucleatina biplicata
"? Terebratula biplicata" = Nucleatina biplicata Sowerby 1812
 Thecideida - Thecideidae
Gymnolaemata
 Cheilostomata - Calloporidae
Stenolaemata
 Cyclostomata - Oncousoeciidae
Proboscina sp. Audouin 1826
 Cyclostomata - Eleidae
 Cyclostomata - Plagioeciidae
 Cyclostomata - Stomatoporidae
Polychaeta
 Serpulimorpha -
Cephalopoda
 Ammonitida - Baculitidae
Sciponoceras gracile Shumard 1860 ammonite
Gastropoda
 Neritoina - Neritopsidae
Neritopsis sp. Grateloup 1832 snail
 Pleurotomarioidea - Pleurotomariidae
Bivalvia
 Pectinida - Pectinoidae
"Vola sp." = Pecten (Vola) Klein 1753 scallop
 Pectinida - Limidae
Lima sp. Bruguière 1797 file clam
 Ostreida - Gryphaeidae
Gryphaeostrea canaliculata Sowerby 1813 oyster
"Ostrea cf. operculata" = Pycnodonte (Phygraea) proteus Reuss 1848 oyster
Hyotissa semiplana Sowerby 1825 oyster
Malacostraca
 Decapoda - Necrocarcinidae
Necrocarcinus sp. Bell 1863 crab
Thecostraca
 Calanticomorpha - Cretiscalpellidae
Cretiscalpellum glabrum Roemer 1841 barnacle
 Scalpellomorpha - Scalpellidae
Scalpellidae indet. Pilsbry 1907 barnacle
Calcarea
 Calcaronea - Stellispongiidae
Pachytilodia bohemica calcareous sponge
Demospongiae
 Spirosclerophorida - Scleritodermatidae
Verruculina sp. Zittel 1878 demosponge