Bolsón, Tempisque (Cretaceous of Costa Rica)

Where: Guanacaste, Costa Rica (10.4° N, 85.4° W: paleocoordinates 16.6° N, 77.9° W)

• coordinate estimated from map

When: El Viejo Formation, Campanian (83.6 - 72.1 Ma)

• corresponding to the basal part of El Viejo Formation

Environment/lithology: rudstone

• interpreted as mass flow deposits, and followed up-section by calcareous and volcanoclastic turbidites (Jaccard et al. 2001)
• 3m of rudist rudstone limestone above the basaltic basement

Size class: macrofossils

• rudists appear disarticulate, biocorroded, filled with macroforaminifera; coral fragments, nereneid gastropods

Primary reference: J.M. Pons, E. Vicens, and R. Schmidt-Effing. 2016. Campanian rudists (Hippuritida, Bivalvia) from Costa Rica (Central America). Journal of Paleontology 90(2):211-238 [B. Seuss/B. Seuss/B. Seuss]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 221369: authorized by Barbara Seuss, entered by Barbara Seuss on 29.07.2021

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Plagioglyptus cf. zansi
Bivalvia
 Hippuritida - Plagioptychidae
Plagioptychidae indet., Mitrocaprina costaricaensis
Plagioptychidae indet. Douvillé 1888 rudist
 Hippuritida - Hippuritidae
Barrettia monilifera, Parastroma trechmanni
 Hippuritida - Radiolitidae
Potosites aff. tristantorresi, Chiapasella sp.
Potosites aff. tristantorresi Pons et al. 2010 rudist
Chiapasella sp. Müllerried 1931 rudist
 Hippuritida - Antillocaprinidae
Antillocaprina sp., ? Antillocaprina sp.
Antillocaprina sp. Trechmann 1924 rudist
? Antillocaprina sp. Trechmann 1924 rudist
Gastropoda
  -
Gastropoda indet.
Gastropoda indet. Cuvier 1795 snail
nereneid gastropods
Anthozoa
  -
Anthozoa indet.
Anthozoa indet. Ehrenberg 1834