Arberroz conglomerate, Arberroz, massif de Plate, Haute-Savoie (Cretaceous of France)

Where: France (46.0° N, 6.6° E: paleocoordinates 35.5° N, 15.3° E)

• coordinate stated in text

• small collection-level geographic resolution

When: Couches des Verds Member (Grès Verts Helvetiques Formation), Late/Upper Aptian (122.5 - 112.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; poorly lithified, condensed, glauconitic, phosphatic, stromatolitic, sandy conglomerate

Size class: macrofossils

Preservation: cast, replaced with phosphate

Primary reference: M. Delamette, J. Charollais, D. Decrouez and M. Caron. 1997. Les grès verts helvétiques (Aptien moyen-Albien supérieur) de Haute-Savoie, Valais et Vaud (Alpes occidentales franco-suisses). Publications du Département de Géologie et Paléontologie. Section des Sciences de la Terre 23:1-400 [L. Villier/L. Villier]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 56673: authorized by Loic Villier, entered by Loic Villier on 22.11.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Brachiopoda
  -
Brachiopoda indet. Cuvier 1805
Polychaeta
 Sabellida - Serpulidae
Serpulidae indet. Rafinesque 1835
Bivalvia
  -
Bivalvia indet. Linnaeus 1758 clam
 Arcida - Arcidae
Arca sp. Linnaeus 1758 ark
 Arcida - Cucullaeidae
"Idonearca glabra" = Cucullaea (Idonearca), "Idonearca aff. aequilateralis" = Cucullaea (Idonearca)
"Idonearca glabra" = Cucullaea (Idonearca) clam
"Idonearca aff. aequilateralis" = Cucullaea (Idonearca) clam
 Pectinida - Pectinoidae
Neithea sp. Drouet 1825 scallop
 Pectinida -
Entolium orbiculare Sowerby 1817 scallop
 Pectinida - Limidae
 Pectinida - Plicatulidae
Plicatula sp. Lamarck 1801 scallop
 Ostreida - Gryphaeidae
"Exogyra arduennensis" = Rhynchostreon mermeti
"Exogyra arduennensis" = Rhynchostreon mermeti Coquand 1862 oyster
 Ostreida - Arctostreidae
 Carditida - Astartidae
 Carditida - Carditidae
 Cardiida - Arcticidae
Epicyprina sp. Casey 1952 clam
 Cardiida - Cardiidae
 Trigoniida - Megatrigonioidae
 Trigoniida - Trigoniidae
? Quadratotrigonia nodosa Sowerby 1830 clam
 Nuculida - Nuculidae
Nucula sp. Lamarck 1799 nut clam
Gastropoda
  -
Gastropoda indet. Cuvier 1797 snail
 Euomphalina - Paraturbinidae
Paraturbo sp. Cossmann 1907 snail
 Mesogastropoda - Naticidae
? Natica sp. Scopoli 1777 moon snail
 Stromboidea - Aporrhaidae
Aporrhaidae indet. Gray 1850 snail
Dicroloma marginata snail
Dicroloma (Perissoptera) marginata
 Heterostropha - Ringiculidae
 Pleurotomariida - Pleurotomariidae
Pleurotomaria sp. Defrance 1826 snail
 Vetigastropoda - Discohelicidae
Cephalopoda
 Ammonitida - Parahoplitidae
Hypacanthoplites subrectangulatus ammonite
Hypacanthoplites subrectangulatus rubricosus Casey
Hypacanthoplites plesiotypicus ammonite
Hypacanthoplites plesiotypicus anglicus Casey
Hypacanthoplites milletianus ammonite
Hypacanthoplites milletianus subelegans Breistroffer
 Ammonitida - Leymeriellidae
Leymeriella tardefurcata Leymerie 1841 ammonite
 Ammonitida - Douvilleiceratidae
Douvilleiceras sp. Grossouvre 1894 ammonite
 Ammonitida - Anisoceratidae
Stenolaemata
 Cyclostomata - Cavidae
? Ceriocava sp. d'Orbigny 1849
 Cyclostomata -
Chondrichthyes
 Odontaspidida - Isuridae
Isuridae indet. Gray 1851 mackerel shark
Echinoidea
 Holectypoida - Discoididae
Demospongea
 Clavulina - Clionaidae
Entobia sp. Bronn 1838 demosponge
 Ichnofossils -