Mason Porcus East, MP2 through MP5A (Silurian of Italy)

Where: Sardinia, Italy (39.5° N, 8.3° E: paleocoordinates 58.7° S, 51.5° E)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Pridoli (423.0 - 419.2 Ma)

• Dated by authors on basis of conodonts.

Environment/lithology: marine; bioturbated, shelly/skeletal, argillaceous wackestone and marl

• Generally interpreted as shallow-water carbonates alternating with deeper-water pelitic rocks.
• "typical Silurian black marly limestones with nautiloids, bivalves, etc. alternating with limestones and black shales. Limestones are mostly biomicritic biosparites with traces of bioturbations at some levels (MP3)."

Primary reference: M. Gnoli, F. Leone, R. Olivieri and E. Serpagli. 1988. The Mason Porcus section as reference section for uppermost Silurian-Lower Devonian in SW Sardinia. Bolletino della Societa Paleontologica Italiana 27(3):323-334 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 26173: authorized by Michael Foote, entered by Michael Foote on 07.10.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Trilobita
 Trinucleida - Raphiophoridae
Ampyx aff. ouralti
Ostracoda
 Cypridinida - Bolbozoidae
? Bolbozoe sp.
? Bolbozoe sp. Barrande 1872 ostracod
 Palaeocopida - Beyrichiidae
Kloedenia lovisatoi
Malacostraca
 Archaeostraca -
Aristozoe sp.
Aristozoe sp. Barrande 1872
 Archaeostraca - Ceratiocarididae
Ceratiocaris cf. bohemica
Cephalopoda
 Orthocerida - Orthoceratidae
? Kopaninoceras thyrsus, Orthocycloceras fluminese
? Kopaninoceras thyrsus Barrande 1870
Given as K. "tyrsus"
 Orthocerida - Arionoceratidae
Parakionoceras originale, Arionoceras sp., "Arionoceras affine" = Arionoceras canonicum
Arionoceras sp. Barskov 1966
"Arionoceras affine" = Arionoceras canonicum Meneghini 1843
 Orthocerida - Dawsonoceratidae
Anaspyroceras cf. pseudocalamiteium
Anaspyroceras cf. pseudocalamiteium
Given as "Anaspiroceras"
 Orthocerida - Sphaerorthoceratidae
Plagiostomoceras culter
 Orthocerida -
Murchisoniceras calamaoides
 Dissidocerida - Geisonoceratidae
Columenoceras degener, Columenoceras intermixtum
Bivalvia
 Ostreida - Pterineidae
Cheiopteria bridgei
 Myalinida - Lunulacardiidae
Lunulacardium sp.
Lunulacardium sp. Münster 1840 clam
 Cyrtodontida - Antipleuridae
Dualina sp.
Dualina sp. Barrande 1881 clam
Conodonta
 Ozarkodinida -
"Ozarkodina remscheidensis" = Nicollidina remscheidensis, Ozarkodina confluens, Ozarkodina elegans
"Ozarkodina remscheidensis" = Nicollidina remscheidensis Ziegler 1960 conodont
Ozarkodina confluens Rhodes 1953 conodont
Ozarkodina elegans Stauffer 1938 conodont
 Ozarkodinida - Spathognathodontodae
"Ozarkodina excavata" = Wurmiella excavata
"Ozarkodina excavata" = Wurmiella excavata Branson and Mehl 1933 conodont
 Prioniodontida -
Pseudooneotodus sp.
Pseudooneotodus sp. Drygant 1974 conodont
 Belodellida - Dapsilodontidae
Dapsilodus sp.
Dapsilodus sp. Cooper 1976 conodont
 Belodellida - Belodellidae
Belodella sp.
Belodella sp. Ethington 1959 conodont