Ophiuridea, Schicht A, Pliensbachian, Seewen, Solothurn (Jurassic of Switzerland)

Where: Switzerland (47.4° N, 7.7° E: paleocoordinates 36.3° N, 15.5° E)

• coordinate stated in text

• hand sample-level geographic resolution

When: Pliensbachian (190.8 - 182.7 Ma)

• 10 cm bed

• bed-level stratigraphic resolution

Environment/lithology: offshore; poorly lithified, yellow claystone

Size classes: macrofossils, mesofossils, microfossils

Collection methods: bulk, sieve,

Primary reference: H. Hess. 1962. Mikropaläontologische Untersuchungen an Ophiuren II. Die Ophiuren aus dem Lias (Pliensbachien-Toarcien) von Seewen (Kt. Solothurn). Bericht der schweitzerischen palaeontologischen Gesellschaft 55(2):609-656 [L. Villier/L. Villier]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 58314: authorized by Loic Villier, entered by Loic Villier on 31.01.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

Ostracoda
 Podocopida - Bairdiidae
Bairdia sp. M'Coy 1844 ostracod
 Podocopida - Healdiidae
Hungarella sp. n. sp. ostracod
Cephalopoda
 Ammonitida - Dactylioceratidae
Prodactylioceras davoei Sowerby 1822 ammonite
 Ammonitida - Liparoceratidae
Amaltheus sp. de Montfort 1808 ammonite
Amaltheus margaritatus de Montford 1808 ammonite
 Ammonitida - Lytoceratidae
Lytoceratidae indet. Neumayr 1875 ammonite
Crinoidea
 Isocrinida - Isocrinidae
"Balanocrinus subteroides" = Balanocrinus subsulcatus, Isocrinus sp.
"Balanocrinus subteroides" = Balanocrinus subsulcatus Munster 1831 Sea lily
Isocrinus sp. von Meyer 1836 Sea lily
Ophiuroidea
 Ophiacanthida - Ophiodermatidae
"Palaeocoma gaveyi" = Palaeocoma milleri
"Palaeocoma gaveyi" = Palaeocoma milleri Phillips 1829 brittle star
124 lateral shields, 51 vertebrae, 12 dorsal and ventral shields
 Ophiacanthida - Ophiacanthidae
? Ophiacantha dorecki n. sp. Hess 1962 brittle star
37 lateral shields
 Amphilepidida - Hemieuryalidae
"Hemieuryale lunaris" = Sigsbeia lunaris
"Hemieuryale lunaris" = Sigsbeia lunaris Hess 1962 brittle star
19 lateral shields, 8 vertebrae
 Ophiurida - Ophiosphalmidae
Ophiomusium solodurense n. sp. Hess 1962 brittle star
712 lateral shields, 19 vertebrae
 Ophiurida - Aplocomidae
"? Ophiopinna helvetica" = Sinosura brodiei
"? Ophiopinna helvetica" = Sinosura brodiei Wright 1866 brittle star
231 lateral shields, 30 vertebrae
Echinoidea
  -
Echinoidea indet. Leske 1778 sea urchin
Foraminifera
 Lituolida - Lituolidae
  -
Nodosariata
 Vaginulinida - Vaginulinidae
"Astacolus matutina" = Lenticulina munsteri
"Astacolus matutina" = Lenticulina munsteri Roemer 1839
 Nodosariida - Nodosariidae
Foraminifera
  -
"Marginulina prima" = Cristellaria (Marginulina)
"Marginulina prima" = Cristellaria (Marginulina)