Broccatello stromatactis mound, Arzo (Jurassic of Switzerland)

Also known as Reef 3370

Where: Switzerland (45.9° N, 8.9° E: paleocoordinates 33.2° N, 15.4° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Broccatello Formation, Early/Lower Sinemurian (196.5 - 189.6 Ma)

• Age assignment based on Neuweiler and Bernoulli (2005)

• group of beds-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified, red lime mudstone

• Red stromatactis limestone, massive, mound-shaped

Size class: macrofossils

Primary reference: F. Wiedenmayer. 1963. Obere Trias bis mittlerer Lias zwischen Saltrio und Tremona (Lombardische Alpen): Die Wechselbeziehungen zwischen Stratigraphie, Sedimentologie und syngenetischer Tektonik. Eclogae Geologicae Helvetiae 56:529-640 [W. Kiessling/W. Kiessling/W. Kiessling]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 48131: authorized by Wolfgang Kiessling, entered by Wolfgang Kiessling on 15.03.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Rhynchonellata
 Terebratulida - Zeilleriidae
"Zeilleria indentata" = Zeilleria (Zeilleria) indentata Sowerby 1824
Zeilleria sarthacensis d'Orbigny 1850
 Terebratulida - Lobothyrididae
Lobothyris sp. Buckman 1917
punctata pentagonalis + punctata subpunctata
Lobothyris punctata Sowerby 1812
 Spiriferinida - Spiriferinidae
Spiriferina sp.
var. nov. + rostrata lata
Spiriferina rostrata Zieten 1830
 Rhynchonellida - Tetrarhynchiidae
Tetrarhynchia sp. Buckman 1917
juvenile
 Rhynchonellida - Dimerellidae
Rhynchonellina sp. Gemmellaro 1871
? sp. nov.
 Rhynchonellida - Wellerellidae
Cirpa fronto Quenstedt 1871
 Rhynchonellida - Prionorhynchiidae
 Rhynchonellida - Rhynchonellidae
Bivalvia
 Pectinida - Pectinoidae
Pectinidae indet. Wilkes 1810 scallop
listed as Pecten
 Pectinida - Limidae
Plagiostoma sp. Sowerby 1814 file clam
listed as Lima
Gastropoda
 Pleurotomariida - Pleurotomariidae
Crinoidea
  -
Pentacrinus sp. Miller 1821 Sea lily
Calcarea
 Calcaronea - Endostomatidae
"Corynella sp." = Endostoma
"Corynella sp." = Endostoma Roemer 1864 calcareous sponge
 Calcaronea - Stellispongiidae
Stellispongia sp. d'Orbigny 1849 calcareous sponge