Mem Moniz (Miocene of Portugal)

Where: Portugal (37.2° N, 8.2° W: paleocoordinates 37.3° N, 9.3° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Mem Moniz Member (Lagos-Portimao Formation), Serravallian (13.8 - 11.6 Ma)

• samples MM1-MM3, Mem Moniz Marls are part of the middle member of the Lagos-Portimao Formation, calcareous nannofossil subzone CN5a, Middle Serravallian

• bed-level stratigraphic resolution

Environment/lithology: offshore; lithified, white marl

• depth below storm wave base, 100 m or more
• white marl without macrofossils

Size class: microfossils

Primary reference: A. Pisera, M. Cachao, and C. M. Silva. 2006. Siliceous sponge spicules from the Miocene Mem Moniz Marls (Portugal) and their environmental significance. Rivista Italiana di Paleontologia e Stratigrafia 112(2):287-299 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 117021: authorized by Wolfgang Kiessling, entered by Uta Merkel on 14.09.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

• calcareous nannofossils, benthic and planktic foraminifera, rare ostracods and diatoms reported to be present, but not listed
Demospongiae
 Tetractinomorpha -
Spirophorida indet. Bergquist and Hogg 1969 demosponge
 Spirophorida - Samidae
Samus sp. Gray 1867 demosponge
 Clavulina - Clionaidae
 Protomonaxonida - Tethyidae
? Tethyidae indet. Gray 1867 demosponge
 Hadromerida -
Hadromerida indet. Topsent 1898 demosponge
 Tetralithistida - Theonellidae
Theonellidae indet. Lendenfeld 1904 demosponge
 Spirosclerophorida -
Rhizomorina indet. Zittel 1895 demosponge
 Pachastrellida - Pachastrellidae
Pachastrellidae indet. Carter 1875 demosponge
and/or Cathropellidae indet.
 Ancorinida - Ancorinidae
Ancorinidae indet. Schmidt 1870 demosponge
 Ancorinida - Geodiidae
Erylus sp. Gray 1867 demosponge
listed as Eurylus sp.
? Geodia sp. Lamarck 1815 demosponge
Hexactinellida
  -
Hexactinellida indet. Schmidt 1870 glass sponge