Zwolle (Ordovician to of Netherlands)

Where: Netherlands (52.5° N, 6.1° E: paleocoordinates 50.6° S, 8.9° W)

When: Haljala Erratics Formation, Idavere to Idavere (458.0 - 449.9 Ma)

• Sa2

• formation-level stratigraphic resolution

Environment/lithology: gray, yellow chert

• yellowish-grey cherts

Size class: macrofossils

Preservation: mold/impression

Primary reference: J. O. R. Ebbestad, F. Rhebergen, and A. P. Gubanov. 2017. Late Ordovician rostroconchs (Mollusca) from fluvial erratics in northwestern Europe. Bulletin of Geosciences 92(4):405-438 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 192065: authorized by Pete Wagner, entered by Pete Wagner on 06.03.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Chlorophyceae
 Dasycladales - Dasycladaceae
Ulvophyceae
  -
Vermiporella fragilis Stolley 1893
Mastopora concava
  -
Mastopora concava Eichwald 1840
Rostroconchia
 Ribeirioida - Ischyriniidae
Ischyrinia viator n. sp. Ebbestad et al. 2017
Tolmachovia sublirata n. sp. Ebbestad et al. 2017
Beukeria plicata n. sp. Ebbestad et al. 2017
Gastropoda
  - Turritellidae
Megalomphala crassiuscula Koken 1897 horn snail
 Euomphalina - Lesueurillidae
"Lesueurilla marginalis" = Mestoronema marginalis
"Lesueurilla marginalis" = Mestoronema marginalis d'Eichwald 1860 snail
 Euomphalina - Holopeidae
Holopea balticus Koken and Perner 1925 snail
Stenolaemata
 Trepostomata - Halloporidae
Diplotrypa petropolitana Nicholson 1879
Rhynchonellata
 Orthida - Platystrophiidae
Platystrophia chama Eichwald 1861
Strophomenata
 Strophomenida - Sowerbyellidae
Craniata
 Craniida - Craniidae
Polychaeta
  -
Trilobita
 Phacopida - Cheiruridae
Hemisphaerocoryphe pseudohemicranium Nieszkowski 1859 trilobite
 Phacopida - Encrinuridae
Atractocybeloides berneri Krueger 1991 trilobite
 Phacopida - Pterygometopidae
Chasmops marginatus Schmidt 1881 trilobite
 Corynexochida - Illaenidae
 Lichida - Lichidae
Otarozoum peri Warburg 1939 trilobite
 Trinucleida - Raphiophoridae
Lonchodomas rostratus Sars 1835 trilobite
Echinoidea
 Bothriocidaroida - Bothriocidaridae
Hoeegonites kringla
  -
Hoeegonites kringla Nitecki and Spjeldnæs 1989