Gelwanajan, 78-87: Bathonian - Callovian, Somalia

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Echinoidea - Clypeidae
Echinoidea - Hemicidaridae
Echinoidea - Salenioida - Acrosaleniidae
Crinoidea - Millericrinida - Millericrinidae
Millericrinus sp. d'Orbigny 1840
Rhynchonellata - Rhynchonellida - Tetrarhynchiidae
Rhynchonellata - Terebratulida - Loboidothyrididae
Bivalvia - Ostreida - Gryphaeidae
Bivalvia - Ostreida - Eligmidae
Eligmus rollandi Douvillé 1907
see common names

Geography
Country:Somalia
Coordinates: 10.6° North, 43.0° East (view map)
Paleocoordinates:15.9° South, 39.5° East (Wright 2013)
Basis of coordinate:stated in text
Geographic resolution:small collection
Time
Period: Jurassic Epoch: Middle Jurassic
Stage: Bathonian - Callovian 10 m.y. bin: Jurassic 4 - Jurassic 5
Key time interval: Bathonian - Callovian
Age range of interval: 168.2 - 161.5 m.y. ago
Stratigraphy
Formation:Sa Wer Member:basal
Stratigraphic resolution:bed
Stratigraphy comments: samples 78-87
Lithology and environment
Primary lithology: lithified grainstone
Secondary lithology: lithified marl
Lithology description: well-bedded yellowish calcarenite and sandy marls, very fine, light gray limestones, sometimes dolomitized
Environment:shallow subtidal indet.
Taphonomy
Modes of preservation:body,cast
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Metadata
Database number:100385
Authorizer:W. Kiessling Enterer:U. Merkel
Research group:marine invertebrate
Created:2010-12-08 23:40:30 Last modified:2025-02-22 15:12:02
Access level:the public Released:2010-12-08 23:40:29
Creative Commons license:CC0
Reference information

Primary reference:
34459. E. Abbate, G. Ficcarelli, C. Pirini Radrizzani, A. Salvietti, D. Torre and A. Turi. 1974. Jurassic sequences from the Somali coast of the Gulf of Aden. Rivista Italiana di Paleontologia e Stratigrafia 80(3):409-478 [W. Kiessling/U. Merkel]