Cyclopygid Bed, section near Domusnovas (Ordovician of Italy)

Where: Sardinia, Italy (30.3° N, 8.7° E: paleocoordinates 74.1° S, 114.4° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Amorphognathus ordovicicus conodont zone, Punta S'Argiola Member (Domusnovas Formation), Kralodvorian (449.5 - 445.6 Ma)

• Near to of the member.

• group of beds-level stratigraphic resolution

Environment/lithology: offshore shelf; lithified, shelly/skeletal, calcareous mudstone

• Fossiliferous, dark, reddish-gray, slightly calcareous mudstone

Size classes: macrofossils, mesofossils

Collection methods: BA 5/6 Foliomena community; Member occurs in five outcrops, but is only .89 to 1.5 meters thick, (on average 1.1 m). All the photographed specimens come from these two locations (only approx. 15 km apart) and so I will consider this a pooled sample, despite more than one location.

Primary reference: F. Leone, A. Ferretti, W. Hammann, A. Loi, G. L. Pillola and E. Serpagli. 1998. Outline of the post-Sardic Ordovician sequence in south-westem Sardinia. Giornale di Geologia 60:39-56 [P. Wagner/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 192914: authorized by Pete Wagner, entered by Pete Wagner on 25.04.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Lichida - Lichidae
Dicranopeltis cf. polytoma Angelin 1854 trilobite
 Trinucleida - Trinucleidae
Nankinolithus granulatus Wahlenberg 1818 trilobite
 Ptychopariida - Shumardiidae
Shumardia extensa Weir 1959 trilobite
 Asaphida - Cyclopygidae
Cyclopyge marginata, "Symphysops armata" = Symphysops armatus
"Symphysops armata" = Symphysops armatus Barrande 1872 trilobite
 Corynexochida - Styginidae
 Corynexochida - Illaenidae
"Ulugtella angelini" = Illaenus angelini
"Ulugtella angelini" = Illaenus angelini Holm 1882 trilobite
 Odontopleurida - Odontopleuridae
 Phacopida - Encrinuridae
Staurocephalus clavifrons Angelin 1878 trilobite
 Phacopida - Pliomeridae
Ovalocephalus tetrasulcatus Kielan 1960 trilobite
 Phacopida - Cheiruridae
Stubblefieldia sp. Prantl and Pribyl 1947 trilobite
 Phacopida - Dalmanitidae
Dreyfussina struvei Destombes 1963 trilobite
"Deloites maiderensis" = Eudolatites (Deloites) maederensis Destombes 1972 trilobite
Artiopoda
 Agnostida - Metagnostidae
Arthrorhachis tarda Barrande 1846
Conodonta
 Panderodontida - Panderodontidae
Panderodus gracilis Branson and Mehl 1933 conodont
 Ozarkodinida -
Plectodina cf. alpina Serpagli 1967 conodont
 Belodellida - Belodellidae
 Belodellida - Ansellidae
Hamarodus europaeus Serpagli 1967 conodont
Ansella cf. pseudorobusta Serpagli 1967 conodont
 Belodellida - Dapsilodontidae
Dapsilodus mutatus Branson and Mehl 1933 conodont
 Prioniodontida -
Sagittodontina robusta Knüpfer 1967 conodont
 Prioniodontida - Balognathidae
Birksfeldia cf. circumplicata Orchard 1980 conodont
Amorphognathus ordovicicus Bergström and Bergström 1996 conodont
"Amorphognathus lindstroemi" = Amorphognathus duftonus Rhodes 1955 conodont
 Prioniodontida - Strachanognathidae
Scabbardella altipes Hennigsmoen 1948 conodont
 Protopanderodontida - Cornuodontidae
Conodontophorida
  -
Istorinus erectus Knüpfer 1967