The Toarcian in the Subbetic Basin: Cerro de Mahoma section: Sample 21a (Jurassic of Spain)

Where: Murcia, Spain (38.1° N, 1.5° W: paleocoordinates 27.1° N, 9.1° E)

When: Meneghinii ammonoid zone, Subbetic Basin Formation, Toarcian (182.7 - 174.1 Ma)

Environment/lithology: basinal (); lithified limestone

• The lower part of the section (Serpentinum to Gradata Zones), ~14.5 m thick, is composed of red marly limestones, partially nodular red marls and marly limestones. Microfacies are mudstones and packstones with radiolarians, scarce thin-shelled bivalves, benthic foraminifers, ostracods, etc.

Size class: microfossils

Primary reference: J. Sandoval, M. Bill, R. Aguado, L. O'Dogherty, P. Rivas, A. Morard, and J. Guex. 2012. The Toarcian in the Subbetic basin (southern Spain): Bio-events (ammonite and calcareous nannofossils) and carbon-isotope stratigraphy. 342(343):40-63 [A. Kocsis/L. Mulvey]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 201793: authorized by Adam Kocsis, entered by Laura Mulvey on 29.05.2019

Creative Commons license: CC BY (attribution)

Taxonomic list

• Total abundance classes used are as follows: A= abundant, defined as more than 10 nannoliths/field of view (n./f.v.); C=common, defined as more than 1 and less than 10 n./f.v.; F= few, 1 nannolith in 1 to 10 f.v.; R= rare, defined as 1 nannolith in more than 10 f.v.
Coccolithophyceae
 Prymnesiophycidae - Prymnesiophycidae
Schizosphaerella punctulata Deflandre and Dangeard 1938
 Podorhabdales - Biscutaceae
 Podorhabdales - Calyculaceae
 Eiffellithales - Chiastozygaceae
Crepidolithus crassus Deflandre 1954
Tubirhabdus patulus Rood et al. 1973
 Watznaueriales - Watznaueriaceae