Fluminimaggiore Fm. Nautiloids, ploeckensis Zone, SW Sardinia (Silurian of Italy)

Also known as Nautiloid assemblage B (Merocycloceras declive-Cryptocycloceras? deludens), lower part

Where: Sardinia, Italy (39.3° N, 8.5° E: paleocoordinates 63.2° S, 55.3° E)

• coordinate based on political unit

• local area-level geographic resolution

When: ploeckensis zone, Fluminimaggiore Formation, Gorstian (427.4 - 425.6 Ma)

• member-level stratigraphic resolution

Environment/lithology: marine; shelly/skeletal, gray limestone

• "dark limestones and gray bioclastic limestones"

Primary reference: M. Gnoli and E. Serpagli. 1991. Nautiloid assemblages from middle-late Silurian of southwestern Sardinia: a proposal. Bolletino della Societa Paleontologica Italiana 30(2):187-195 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 26168: authorized by Michael Foote, entered by Michael Foote on 07.10.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• Nautiloids only.
Show authors, comments, and common names
Cephalopoda
 Lituitida - Sphooceratidae
Sphooceras truncatum
Sphooceras truncatum Barrande 1860
 Dissidocerida - Geisonoceratidae
? Geisonoceras cf. socium, Geisonoceras sp., Columenoceras agassizi
Geisonoceras sp. Hyatt 1884
 Orthocerida -
"Aptychopsis primum" = Aptychopsis prima
"Aptychopsis primum" = Aptychopsis prima Barrande 1872
 Orthocerida - Sphaerorthoceratidae
Akrosphaerorthoceras gregale, Plagiostomoceras cf. gruenewaldti, Hemicosmorthoceras celloni, Hemicosmorthoceras aff. serratulum, Hemicosmorthoceras semimbricatum, "Sphaerorthoceras" sp., Sphaerorthoceras beatum, "Parasphaerorthoceras" "sp. J sensu Ristedt", "Parasphaerorthoceras" "sp. B sensu Ristedt", "Parasphaerorthoceras" "sp. H sensu Ristedt"
"Sphaerorthoceras" sp. Ristedt 1968
 Orthocerida - Dawsonoceratidae
Anaspyroceras pseudocalamiteum
 Orthocerida - Sactoceratidae
Sactoceras richteri
 Orthocerida - Orthoceratidae
? Orthocycloceras cf. lynx, Michelinoceras "sp. A sensu Ristedt", Michelinoceras michelini, "Arionoceras submoniliforme" = Orthoceras submoniliforme, ? Arkonoceras cf. adjectum, Merocycloceras declive
Michelinoceras michelini Barrande 1866
"Arionoceras submoniliforme" = Orthoceras submoniliforme Meneghini 1857
 Orthocerida -
Mericoceras cf. sericatum, ? Cryptocycloceras cf. deludens
 Orthocerida - Arionoceratidae
Parakionoceras originale, Arionoceras capillosum
Arionoceras capillosum Barrande 1868
 Discosorida - Phragmoceratidae
Protophragmoceras minus