Ambalarano (Jurassic of Madagascar)

Where: Madagascar (15.1° S, 48.0° E: paleocoordinates 23.8° S, 26.5° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Early/Lower Callovian (164.7 - 161.2 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified marl

Size class: macrofossils

Primary reference: H. Besairie and M. Collignon. 1972. Geologie de Madagascar I. Les Terrains Sedimentaires. Annales Geologiques de Madagascar 35:1-463 [A. Rees/A. Rees]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 98096: authorized by Wolfgang Kiessling, entered by Uta Merkel on 20.09.2010, edited by Paul Scofield

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ammonitida - Perisphinctidae
Choffatia aff. furcula Neumayr 1871 ammonite
Subgrossouvria blakei Spath 1931 ammonite
 Ammonitida - Macrocephalitidae
Bivalvia
 Pectinida - Limidae
Pseudolimea duplicata Sowerby 1814 file clam
Lima complanata file clam
Lima jumarensis file clam
 Pectinida - Pectinoidae
"Eopecten aubryi" = Eopecten velatus
"Eopecten aubryi" = Eopecten velatus Goldfuss 1833 scallop
 Pectinida - Neitheoidae
"Pecten kachhensis" = Weyla kachhensis
"Pecten kachhensis" = Weyla kachhensis Cox 1952 scallop
 Ostreida - Palaeolophidae
"Alectryonia gregarea" = Actinostreon gregareum
"Alectryonia gregarea" = Actinostreon gregareum Sowerby 1816 oyster
 Ostreida - Gryphaeidae
 Mytilida - Mytilidae
"Modiolus imbricatus" = Modiolus (Modiolus) imbricatus Sowerby 1818 mussel
 Lucinida - Mactromyidae
Mactromya cf. crassa Agassiz 1845 clam
 Pholadida - Ceratomyidae
"Ceromya substriata" = Ceratomya
"Ceromya substriata" = Ceratomya clam
Rhynchonellata
 Rhynchonellida - Erymnariidae
"Rhynchonella rugosa" = Cryptorhynchia rugosa
"Rhynchonella rugosa" = Cryptorhynchia rugosa Kitchin 1900
 Terebratulida - Postepithyrididae
"Terebratula acutiplicata" = Kutchithyris acutiplicata, "Terebratula propinqua" = Kutchithyris propinqua, "Terebratula aurata" = Kutchithyris propinqua
"Terebratula acutiplicata" = Kutchithyris acutiplicata Kitchin 1900
"Terebratula propinqua" = Kutchithyris propinqua Kitchin 1900
"Terebratula aurata" = Kutchithyris propinqua Kitchin 1900
Polychaeta
 Sabellida - Sabellidae
"Serpula aff. gordialis" = Glomerula serpentina
"Serpula aff. gordialis" = Glomerula serpentina Schlotheim 1820
Echinoidea
 Irregularia - Clypeidae
"Pygurus depressus" = Pygurus (Mepygurus) depressus
"Pygurus depressus" = Pygurus (Mepygurus) depressus Agassiz 1847 sea urchin
 Irregularia - Pygasteridae