Ambalarano: Early/Lower Callovian, Madagascar

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Echinoidea - Pygasteridae
Pygaster joleaudi
Echinoidea - Clypeidae
Pygurus depressus Agassiz 1847
recombined as Pygurus (Mepygurus) depressus
Cephalopoda - Ammonitida - Macrocephalitidae
Indocephalites aff. transitorius
Macrocephalites formosus
Cephalopoda - Ammonitida - Perisphinctidae
Choffatia aff. furcula
Subgrossouvria blackei
synonym of Choffatia
Bivalvia - Lucinida - Mactromyidae
Mactromya cf. crassa Agassiz 1845
Bivalvia - Pholadida - Ceratomyidae
Ceromya substriata
replaced by Ceratomya
Bivalvia - Mytilida - Mytilidae
Modiolus glendayi
Modiolus imbricatus (Sowerby 1818)
recombined as Modiolus (Modiolus) imbricatus
Bivalvia - Ostreida - Gryphaeidae
Liostrea alimena
Bivalvia - Ostreida - Palaeolophidae
Alectryonia gregarea (Sowerby 1816)
recombined as Actinostreon gregareum
Bivalvia - Pectinida - Limidae
Lima complanata
Lima jumarensis
Pseudolimea duplicata (Sowerby 1814)
Bivalvia - Pectinida - Neitheidae
Pecten kachhensis Cox 1952
recombined as Weyla kachhensis
Bivalvia - Pectinida - Pectinidae
Eopecten aubryi (Douville 1886)
synonym of Eopecten velatus
Polychaeta - Sabellida - Sabellidae
Serpula aff. gordialis Schlotheim 1820
recombined as Glomerula serpentina
Rhynchonellata - Rhynchonellida - Erymnariidae
Rhynchonella rugosa Kitchin 1900
recombined as Cryptorhynchia rugosa
Rhynchonellata - Terebratulida - Postepithyrididae
Terebratula propinqua Kitchin 1900
recombined as Kutchithyris propinqua
Terebratula aurata Kitchin 1900
synonym of Kutchithyris propinqua
Terebratula acutiplicata Kitchin 1900
recombined as Kutchithyris acutiplicata
see common names

Geography
Country:Madagascar
Coordinates: 15.1° South, 48.0° East (view map)
Paleocoordinates:23.8° South, 26.5° East
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period:Jurassic Epoch:Middle Jurassic
Stage:Callovian 10 m.y. bin:Jurassic 5
Key time interval:Early/Lower Callovian
Age range of interval:164.70000 - 161.20000 m.y. ago
Stratigraphy
Stratigraphic resolution:group of beds
Lithology and environment
Primary lithology: lithified marl
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Metadata
Database number:98096
Authorizer:W. Kiessling Enterer:U. Merkel
Research group:marine invertebrate
Created:2010-09-20 07:56:06 Last modified:2010-09-20 10:56:06
Access level:the public Released:2010-09-20 07:56:06
Creative Commons license:CC BY
Reference information

Primary reference:

8015.PGAP 1022H. Besairie and M. Collignon. 1972. Geologie de Madagascar I. Les Terrains Sedimentaires. Annales Geologiques de Madagascar 35:1-463 [A. Rees/A. Rees]