Baghmara Fm - Zone IA: Early/Lower Miocene, India
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
|
||||||||||
Sinym cymba
|
||||||||||
Gastropoda
- Heterostropha
- Architectonicidae
|
||||||||||
Architectonica affine
(Sowerby 1840)
|
||||||||||
recombined as Architectonica affinis | ||||||||||
[entered as Architectonica affinis] | ||||||||||
Gastropoda
- Neotaenioglossa
- Calyptraeidae
|
||||||||||
Calyptraea chinensis
(Linnaeus 1758)
|
||||||||||
Gastropoda
- Turritellidae
|
||||||||||
Turritella cf. rostrata
|
||||||||||
Turritella horrisoni
|
||||||||||
Turritella kalayensis
|
||||||||||
Turritella pseudobangongensis
|
||||||||||
Turritella sp.
Lamarck 1799
|
||||||||||
Turritella affinis
Muller 1849
|
||||||||||
Turritella noetlingi
Vredenburg 1921
|
||||||||||
Turritella narica
Vredenburg 1928
|
||||||||||
SUBSPECIES: T. narica baluchistanensis | ||||||||||
Turritella (Turritella) terebra
(Linnaeus 1758)
|
||||||||||
SUBSPECIES: T. (T.) terebra bantamensis | ||||||||||
Protoma subrenevieri
Vredenburg 1928
|
||||||||||
Gastropoda
- Cerithiidae
|
||||||||||
Cerithium (Ptychocerithium) perlamellosum
Vredenburg 1928
|
||||||||||
recombined as Ptychocerithium perlamellosum | ||||||||||
Bittium quilonense
Dey 1961
|
||||||||||
Gastropoda
- Pseudomelaniidae
|
||||||||||
Drillia (Crassispira) cotteri
Vredenburg 1921
|
||||||||||
recombined as Inquisitor cotteri | ||||||||||
Gastropoda
- Naticidae
|
||||||||||
Natica informal sp. B
Scopoli 1777
|
||||||||||
Natica sp.
Scopoli 1777
|
||||||||||
Natica sp.
Scopoli 1777
|
||||||||||
Natica obscura
Sowerby 1840
|
||||||||||
Natica didyma
(Röding 1798)
|
||||||||||
recombined as Glossaulax didyma | ||||||||||
Sinum protoneritoides
|
||||||||||
Sinum aquensis
(Recluz 1843)
|
||||||||||
SUBSPECIES: S. aquensis praecedens | ||||||||||
Natica tigrina
(Röding 1798)
|
||||||||||
recombined as Cochlis tigrina | ||||||||||
Gastropoda
- Cassidae
|
||||||||||
Cypraecassis sp.
Stuchburry 1837
|
||||||||||
Galeodea dubia
|
||||||||||
Semicassis sp.
Mörch 1852
|
||||||||||
Semicassis mekranica
Vredenburg 1925
|
||||||||||
Gastropoda
- Strombidae
|
||||||||||
Strombus sp.
Linnaeus 1758
|
||||||||||
Gastropoda
- Rostellariidae
|
||||||||||
Rimella subrimosa
(d'Orbigny 1852)
|
||||||||||
recombined as Varicospira subrimosa | ||||||||||
SUBSPECIES: R. subrimosa narica | ||||||||||
Gastropoda
- Neogastropoda
- Mitridae
|
||||||||||
Volvaria kayalensis
|
||||||||||
Gastropoda
- Neogastropoda
- Olivellidae
|
||||||||||
Olivancillaria (Agaronica) nebulosa
(Lamarck 1822)
|
||||||||||
SUBSPECIES: O. (A.) nebulosa pupa | ||||||||||
= Agaronia pupa
Sowerby 1840
|
Harzhauser et al. 2009 | |||||||||
Gastropoda
- Neogastropoda
- Buccinidae
|
||||||||||
Babylonia zeylonia
|
||||||||||
Babylonia pangakensis
|
||||||||||
Gastropoda
- Neogastropoda
- Fasciolariidae
|
||||||||||
Fusinus reticulatus
|
||||||||||
Gastropoda
- Neogastropoda
- Cancellariidae
|
||||||||||
Cancellaria inornata
|
||||||||||
Gastropoda
- Neogastropoda
- Volutidae
|
||||||||||
Volutospina jacobsi
Vredenburg 1921
|
||||||||||
Volutospina mekranica
Vredenburg 1925
|
||||||||||
Gastropoda
- Neogastropoda
- Conidae
|
||||||||||
Conus (Leptoconus) viminens
|
||||||||||
Conus (Leptoconus) tomlini
Dey 1961
|
||||||||||
Gastropoda
- Neogastropoda
- Terebridae
|
||||||||||
Strioterebrum mukerjeei
Dey 1961
|
||||||||||
Terebra gedrosiana
Vredenburg 1925
|
||||||||||
Terebra coxi
Dey 1961
|
||||||||||
Gastropoda
- Neogastropoda
- Turridae
|
||||||||||
Turris (Gemmula) congener
(Smith 1894)
|
||||||||||
recombined as Gemmula congener | ||||||||||
SUBSPECIES: T. (G.) congener mekranica | ||||||||||
Gastropoda
- Ficidae
|
||||||||||
Ficus retciulata
|
||||||||||
Ficus pamotanensis
(Martin 1899)
|
||||||||||
SUBSPECIES: F. pamotanensis kachchhensis | ||||||||||
Gastropoda
- Pleurotomariidae
|
||||||||||
"Pleurotomaria" sp.
Defrance 1826
|
||||||||||
Bivalvia
- Arcida
- Arcidae
|
||||||||||
Anadara submultiformis
|
||||||||||
Anadara multiformis
|
||||||||||
Anadara sp.
Gray 1847
|
||||||||||
Trisidos informal n. sp.
|
||||||||||
Trisidos prototortuosum
|
||||||||||
Trisidos semitorta
(Lamarck 1819)
|
||||||||||
Bivalvia
- Arcida
- Noetiidae
|
||||||||||
Arcopsis bataviana
(Martin 1883)
|
||||||||||
recombined as Arcopsis (Arcopsis) bataviana | ||||||||||
SUBSPECIES: A. bataviana carinata | ||||||||||
Bivalvia
- Pectinida
- Pectinidae
|
||||||||||
Chlamys (Argopecten) informal n. sp.
|
||||||||||
original and current combination Argopecten | ||||||||||
Pecten (Amusiopecten) sp.
Müller 1776
|
||||||||||
Chlamys senatoria
(Gmelin 1791)
|
||||||||||
recombined as Mimachlamys senatoria | ||||||||||
Bivalvia
- Ostreida
- Gryphaeidae
|
||||||||||
Gryphaeostrea sp.
Conrad 1865
|
||||||||||
Bivalvia
- Ostreida
- Ostreidae
|
||||||||||
Ostrea angulata
Sowerby 1840
|
||||||||||
recombined as Crassostrea angulata | ||||||||||
Ostrea latimarginata
Vredenburg 1908
|
||||||||||
Bivalvia
- Carditida
- Carditidae
|
||||||||||
Cardita mutabilis
d'Archaic and Haime 1954
|
||||||||||
recombined as Venericardia (Glyptoactis) mutabilis | ||||||||||
Bivalvia
- Carditida
- Astartidae
|
||||||||||
Astarte sp.
Sowerby 1816
|
||||||||||
Astarte (Digitariopsis) grateloupi
|
||||||||||
Astarte (Ashtarotha) trigonoequilaterata
|
||||||||||
Bivalvia
- Carditida
- Crassatellidae
|
||||||||||
Crassatella sp.
Lamarck 1799
|
||||||||||
Eucrassatella (Hypholobus) rostrata
(Lamarck 1805)
|
||||||||||
Eucrassatella (Hybolophus) rostrata
(Lamarck 1805)
|
||||||||||
SUBSPECIES: E. (H.) rostrata | ||||||||||
Bivalvia
- Cardiida
- Cardiidae
|
||||||||||
Clinocardium sp.
Keen 1936
|
||||||||||
Vepricardium (Hedecardium) sp.
(Marwick 1944)
|
||||||||||
original and current combination Hedecardium | ||||||||||
Fragum thetregyinense
|
||||||||||
Cerastoderma sp.
Mörch 1853
|
||||||||||
Trachycardium aff. minbuense
(Noetling 1901)
|
||||||||||
Trachycardium minbuense
(Noetling 1901)
|
||||||||||
Trachycardium protosubrugosum
(Noetling 1901)
|
||||||||||
Acrosterigma (Vasticardium) njalindungense
|
||||||||||
Bivalvia
- Cardiida
- Donacidae
|
||||||||||
Donax (Hecuba) sp.
(Schumacher 1817)
|
||||||||||
Bivalvia
- Cardiida
- Tellinidae
|
||||||||||
Tellina cf. rostrata
|
||||||||||
Tellina (Quidnipagus) sp.
Linnaeus 1758
|
||||||||||
Tellina (Eurytellina) sp.
(Fischer 1887)
|
||||||||||
Tellina (Eurytellina) sp.
(Fischer 1887)
|
||||||||||
Tellina (Tellinella) hilli
|
||||||||||
Tellina (Tellinella) pseudohilli
|
||||||||||
Bivalvia
- Cardiida
- Psammobiidae
|
||||||||||
Gari (Gari) natensis
|
||||||||||
Macrosolen madlumensis
|
||||||||||
Bivalvia
- Cardiida
- Solecurtidae
|
||||||||||
Solecurtus luzonensis
|
||||||||||
Bivalvia
- Cardiida
- Mactridae
|
||||||||||
Lutraria saingengai
|
||||||||||
Mactra (Allomactra) sp.
Linnaeus 1767
|
||||||||||
Mactra (Allomactra) grateloupi
Cossmann and Peyrot 1909
|
||||||||||
Bivalvia
- Cardiida
- Veneridae
|
||||||||||
Dosinia exolerata
|
||||||||||
Dosinia (Phacosoma) protojuvenilis
Noetling 1901
|
||||||||||
Dosinia subpenicillata
Vredenburg 1928
|
||||||||||
recombined as Dosina subpenicillata | ||||||||||
Bassina sp.
Jukes-Brown 1914
|
||||||||||
Callista (Costacallista) erycina
(Linnaeaus 1758)
|
||||||||||
recombined as Costacallista erycina | ||||||||||
Amiantis sp.
Carpenter 1863
|
||||||||||
Bivalvia
- Cardiida
- Ungulinidae
|
||||||||||
Diplodonta incerta
d'Archiac 1850
|
||||||||||
Bivalvia
- Pholadida
- Corbulidae
|
||||||||||
Corbula sp.
Bruguière 1789
|
||||||||||
Corbula (Varicorbula) sulcata
Lamarck 1801
|
||||||||||
Corbula (Corbula) tunicosulcata
Vredenburg 1928
|
||||||||||
Corbula harpa
Archaic and Haime 1854
|
||||||||||
recombined as Corbula (Bicorbula) harpa | ||||||||||
Bivalvia
- Thraciida
- Thraciidae
|
||||||||||
Thracia sp.
Blainville 1824
|
||||||||||
Bivalvia
- Lucinida
- Lucinidae
|
||||||||||
Milthona sp.
Marwick 1931
|
||||||||||
see common names |
Geography
Country: | India |
Coordinates: | 25.2° North, 90.7° East (view map) |
Paleocoordinates: | 15.9° North, 88.6° East |
Basis of coordinate: | estimated from map |
Geographic resolution: | local area |
Time
Period: | Neogene | Epoch: | Miocene |
10 m.y. bin: | Cenozoic 5 | ||
Key time interval: | Early/Lower Miocene | ||
Age range of interval: | 23.03000 - 15.98000 m.y. ago |
Stratigraphy
Formation: | Baghmara | ||||
Stratigraphic resolution: | group of beds | ||||
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From Baghmara Formation, which regionally conformably overlies the Simsang Fm (presumanly Oligocene-Early Miocene) and is conformably overlain by the late Early MIocene Chengapara Fm. THICKNESS: Zone ranges from 2.08-2.3 m in thickness, within sections ranging from 15-20 m in thickness. AGE: Aquitanian-Burdigalian. STRATIGRAPHIC POSITION: From basal part of section, middle part of the Baghmara Fm. |
Lithology and environment
Primary lithology: | gray poorly lithified silty sandstone |
Secondary lithology: | red lithified "limestone" |
Includes fossils? | Y |
Includes fossils? | Y |
Lithology description: SPECIFIC LITHOLOGY: Grey colored, soft, micaceous, silty sandstone. LITHIFICATION: From both lithified and poorly-lithified facies, as stated in text. | |
Environment: | coastal indet. |
Geology comments: ENVIRONMENT: Shallow siliciclastic marine environment. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Collection methods: | surface (in situ),field collection |
Reason for describing collection: | biostratigraphic analysis |
Collection method comments: COLLECTORS: Presumably the authors, B. C. Lyngdoh, R. P. Tiwari, and R. P. Kachhara. REPOSITORY: Paleontology Museum of the Department of Geology, Pachunga University College, North-Eastern Hill University, Mizoram, India. | |
Taxonomic list comments:COVERAGES: Probably exhaustive for gastropoda and bivalvia. Some fishes also listed. NOMENCLATURE: Appears relatively modern nomenclature, with consistent use of subgeneric and species-level assignments. |
Metadata
Database number: | 72083 | ||
Authorizer: | A. Hendy | Enterer: | A. Hendy | Research group: | marine invertebrate |
Created: | 2007-05-24 07:44:36 | Last modified: | 2013-11-25 13:37:23 |
Access level: | authorizer only | Released: | 2008-05-24 07:44:36 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
24392. | B. C. Lyngdoh, R. P. Tiwari, and R. P. Kachhara. 1999. Miocene Molluscan biosratigraphy of the Garo Hills, Meghalaya, India. Journal of the Paleontological Society of India 44:55-67 [A. Hendy/A. Hendy] |
Secondary references:
36478 | M. Harzhauser, M. Euter, W. E. Piller, B. Berning, A. Kroh and O. Mandic. 2009. Oligocene and Early Miocene gastropods from Kutch (NW India) document an early biogeographic switch from Western Tethys to Indo-Pacific. Palaeontologische Zeitschrift 83:333-372 [A. Hendy/A. Hendy] |