Ambarimaninga (Cretaceous of Madagascar)

Where: Mahajanga, Madagascar (16.5° S, 46.0° E: paleocoordinates 40.3° S, 31.5° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Ambarimaninga Formation, Albian (113.0 - 100.5 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; lithified marl

• associated fauna: ammonites and Toxaster

Size class: macrofossils

Collection methods: peel or thin section,

Primary reference: J. Alloiteau. 1958. Monographie des madreporaires fossiles de Madagascar [Monograph of fossil corals from Madagascar]. Annales Geologiques de Madagascar 25:1-218 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 86497: authorized by Wolfgang Kiessling, entered by Uta Merkel on 04.02.2009, edited by Wolfgang Kiessling

Creative Commons license: CC BY (attribution)

Taxonomic list

Rhynchonellata
 Terebratulida - Gibbithyrididae
"Terebratula obesa" = Concinnithyris obesa2
"Terebratula obesa" = Concinnithyris obesa2 Sowerby 1823
 Terebratulida - Terebratulidae
 Rhynchonellida - Rhynchonellidae
Bivalvia
 Carditida - Astartidae
 Pholadida - Corbulidae
 Cardiida - Arcticidae
Veniella etheridgei2 clam
var. rennei
 Cardiida - Anatinellidae
 Cardiida - Cardiidae
 Hiatellida - Hiatellidae
 Lucinida - Lucinidae
 Mytilida - Mytilidae
"Modiola rotundata" = Modiolus2, "Modiola subcapitata" = Modiolus2, "Modiola roedereri" = Modiolus2, "Modiola recta" = Modiolatus rectus2
"Modiola rotundata" = Modiolus2 mussel
"Modiola subcapitata" = Modiolus2 mussel
"Modiola roedereri" = Modiolus2 mussel
"Modiola recta" = Modiolatus rectus2 Conrad 1837 mussel
 Ostreida - Malleidae
 Ostreida - Pinnidae
 Ostreida - Gryphaeidae
"Ostrea canaliculata" = Gryphaeostrea canaliculata2, "Ostrea besairiei" = Gyrostrea besairiei2
"Ostrea canaliculata" = Gryphaeostrea canaliculata2 Sowerby 1813 oyster
"Ostrea besairiei" = Gyrostrea besairiei2 Collignon 1949 oyster
 Pectinida - Pectinoidae
 Pectinida - Neitheoidae
"Neithea cf. aequicostata" = Neithea (Neithea) aequicostata2 Lamarck 1819 scallop
Neithea quinquecostata2 Sowerby 1814 scallop
 Arcida - Glycymerididae
"Trigonoarca aff. elongata" = Trigonarca2
"Trigonoarca aff. elongata" = Trigonarca2 clam
 Arcida - Arcidae
Cephalopoda
 Nautilida - Nautilidae
Cymatoceras sakalavum2 Collignon 1949 nautiloid
 Phylloceratida - Phylloceratidae
"Phylloceras velledae" = Phylloceras (Hypophylloceras) velledae2
"Phylloceras velledae" = Phylloceras (Hypophylloceras) velledae2 Michelin 1834 ammonite
 Ammonitida - Crioceratitidae
"Ephamulina arctuata" = Epanisoceras2
"Ephamulina arctuata" = Epanisoceras2 ammonite
 Ammonitida - Lytoceratidae
 Ammonitida - Tetragonitidae
"Argonauticeras besairiei" = Argonauticeras belliseptatum2, Jauberticeras besairiei2, Kossmatella aff. marut2, Gaudryceras shimizui2, "Paragaudryceras sakalavum" = Anagaudryceras2, "Eotetragonites umbilicostriatus" = Eogaudryceras (Eotetragonites) umbilicostriatus2
"Argonauticeras besairiei" = Argonauticeras belliseptatum2 Anthula 1899 ammonite
Kossmatella aff. marut2 Stoliczka 1865 ammonite
"Paragaudryceras sakalavum" = Anagaudryceras2 ammonite
"Eotetragonites umbilicostriatus" = Eogaudryceras (Eotetragonites) umbilicostriatus2 Collignon 1949 ammonite
 Ammonitida - Silesitidae
 Ammonitida - Beudanticeratidae
"Paracleoniceras ptychitiforme" = Aioloceras2, "Paracleoniceras besairiei" = Aioloceras besairiei2
"Paracleoniceras ptychitiforme" = Aioloceras2 ammonite
"Paracleoniceras besairiei" = Aioloceras besairiei2 Collignon 1949 ammonite
 Ammonitida - Desmoceratidae
"Desmoceras latidorsatum" = Desmoceras (Desmoceras) latidorsatum2, "Beudanticeras albense" = Roberticeras albense2, "Beudanticeras hourcqi" = Roberticeras hourcqi2, Uhligella dubia2, Uhligella balmensis2, Puzosia quenstedti2
"Desmoceras latidorsatum" = Desmoceras (Desmoceras) latidorsatum2 Michelin 1838 ammonite
"Beudanticeras albense" = Roberticeras albense2 Breistroffer 1947 ammonite
"Beudanticeras hourcqi" = Roberticeras hourcqi2 Collignon 1949 ammonite
Uhligella dubia2 ammonite
Uhligella balmensis2 Jacob 1908 ammonite
Puzosia quenstedti2 Parona and Bonarelli 1897 ammonite
var. breistrofferi
 Ammonitida - Hoplitidae
 Ammonitida - Cleoniceratidae
 Ammonitida - Lyelliceratidae
"Brancoceras cf. aegoceratoides" = Eubrancoceras aegoceratoides2
"Brancoceras cf. aegoceratoides" = Eubrancoceras aegoceratoides2 Steinmann 1881 ammonite
 Ammonitida - Brancoceratidae
"Brancoceras cf. helcion" = Brancoceras (Brancoceras) helcion2, "Brancoceras carinatum" = Brancoceras (Brancoceras) carinatum2, "Brancoceras capricornusimile" = Parabrancoceras capricornusimile2, "Brancoceras besairiei" = Parabrancoceras besairiei2, "Brancoceras compressum" = Parabrancoceras compressum2, "Brancoceras aenigmaticum" = Parabrancoceras aenigmaticum2, "Brancoceras humile" = Parabrancoceras humile2, "Brancoceras rotundatum" = Parabrancoceras rotundatum2
"Brancoceras cf. helcion" = Brancoceras (Brancoceras) helcion2 Reynes 1876 ammonite
misspelled as B. cf. helcyon
"Brancoceras carinatum" = Brancoceras (Brancoceras) carinatum2 Collignon 1949 ammonite
"Brancoceras capricornusimile" = Parabrancoceras capricornusimile2 Collignon 1949 ammonite
"Brancoceras besairiei" = Parabrancoceras besairiei2 Collignon 1949 ammonite
"Brancoceras compressum" = Parabrancoceras compressum2 Collignon 1949 ammonite
"Brancoceras aenigmaticum" = Parabrancoceras aenigmaticum2 Collignon 1949 ammonite
"Brancoceras humile" = Parabrancoceras humile2 Collignon 1949 ammonite
"Brancoceras rotundatum" = Parabrancoceras rotundatum2 Collignon 1949 ammonite
 Ammonitida - Douvilleiceratidae
Douvilleiceras aff. inaequinodum2 Quenstedt 1849 ammonite
Douvilleiceras monile2 Sowerby 1816 ammonite
"Douvilleiceras pseudinaequinodum" = Douvilleiceras variabile2 Tavani 1949 ammonite
"Douvilleiceras mamillatum" = Douvilleiceras mammillatum2 Schlotheim 1813 ammonite
 Ammonitida - Turrilitidae
"Idiohamites aff. dorsetensis" = Mariella dorsetensis2
"Idiohamites aff. dorsetensis" = Mariella dorsetensis2 Spath 1926 ammonite
 Ammonitida - Hamitidae
 Ammonitida - Anisoceratidae
Gastropoda
 Vetigastropoda - Discohelicidae
Delpeya cottreaui2 Collignon 1949 snail
 Pleurotomarioidea - Pleurotomariidae
Leptomaria magneti2 Collignon 1949 snail
 Seguenzioidea - Eucyclidae
 Trochoidea - Trochidae
"Solarium basseae" = Trochus (Solarium)2
"Solarium basseae" = Trochus (Solarium)2 top snail
 Sorbeoconcha - Aporrhaidae
 Neogastropoda - Conidae
Conus primitivus2 cone shell
 Sorbeoconcha - Naticidae
"Gyrodes aff. tenellus" = Gyrodes (Gyrodes) tenellus2
"Gyrodes aff. tenellus" = Gyrodes (Gyrodes) tenellus2 Stoliczka 1868 moon snail
 Sorbeoconcha - Tylostomatidae
 Epitonioidea - Epitoniidae
"Scala franciscae" = Epitonium (Scala)2, "Scala odilae" = Epitonium (Scala)2
"Scala franciscae" = Epitonium (Scala)2 wentletrap
"Scala odilae" = Epitonium (Scala)2 wentletrap
 Cerithioidea - Acanthonematidae
Cerithium coxi2 cerith snail
Cerithium delpeyae2 cerith snail
Cerithium subspinosum2 cerith snail
Fossarus besairiei2 cerith snail
 Heterostropha - Ringiculidae
Polychaeta
 Sabellida - Sabellidae
"Serpula gordialis" = Glomerula serpentina2
"Serpula gordialis" = Glomerula serpentina2 Schlotheim 1820
 Sabellida - Serpulidae
Malacostraca
 Decapoda - Nephropidae
Palaeohomarus collignoni2 Van Stralen 1949 clawed lobster
Echinoidea
 Spatangoida - Toxasteridae
Toxaster gaudryi2 heart urchin
Toxaster sp.2 Agassiz 1839 heart urchin
Douvillaster hourcqi2 heart urchin
 Spatangoida - Spatangidae
Epiaster jeanneti2 heart urchin
Epiaster besairiei2 heart urchin
 Spatangoida - Hemiasteridae
Hemiaster zululandensis2 Besairie and Lambert 1930 heart urchin
 Euechinoidea - Pseudodiadematidae
Anthozoa
 Scleractinia - Dendrophylliidae
Calostylopsis sakalavensis n. gen. n. sp., Aplopsammia collignoni n. gen. n. sp.
Calostylopsis sakalavensis n. gen. n. sp. Alloiteau 1958 stony coral
Aplopsammia collignoni n. gen. n. sp. Alloiteau 1958 stony coral
 Scleractinia - Caryophylliidae
Trochocyathus sp.1, Trochocyathus antsiranensis1, "Paratrochocyathus collignoni n. gen. n. sp." = Trochocyathus collignoni, "Protrochocyathus subarcuatus n. sp." = Trochocyathus subarcuatus, Stylocyathus crassiseptus n. sp.
Trochocyathus sp.1 Milne-Edwards and Haime 1848 stony coral
Trochocyathus antsiranensis1 Collignon 1931 stony coral
"Paratrochocyathus collignoni n. gen. n. sp." = Trochocyathus collignoni Alloiteau 1958 stony coral
"Protrochocyathus subarcuatus n. sp." = Trochocyathus subarcuatus Alloiteau 1958 stony coral
Stylocyathus crassiseptus n. sp. Alloiteau 1958 stony coral
 Scleractinia - Guyniidae