Chengapara Fm - Zone IB: Early/Lower Miocene, India

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Torrina buddha
Bivalvia - Nuculanida - Nuculanidae
Nuculana virgo (Martin 1879)
Bivalvia - Nuculida - Nuculidae
Nucula pulchra
Nucula (Lamellinucula) informal n. sp.
Bivalvia - Ostreida - Ostreidae
Ostrea informal n. sp.
Crassostrea brongiarti
Bivalvia - Pectinida - Pectinidae
Chlamys (Aequipecten) prototransquebaricus
original and current combination Aequipecten
Bivalvia - Arcida - Cucullaeidae
Cucullaea informal n. sp.
Bivalvia - Arcida - Arcidae
Anadara verbeeki
Anadara informal n. sp.
Anadara sp. Gray 1847
Anadara sp. Gray 1847
Anadara sp. Gray 1847
Anadara dichotoma (Deshayes 1863)
Anadara dichotoma (Deshayes 1863)
Anadara dichotoma (Deshayes 1863)
Anadara dichotoma (Deshayes 1863)
Anadara granosa (Linnaeus 1758)
recombined as Anadara (Tegillarca) granosa
Anadara (Lunarca) sp. (Gray 1857)
Anadara (Lunarca) sp. (Gray 1857)
Anadara (Lunarca) sp. (Gray 1857)
Anadara craticulata (Nyst 1848)
Anadara daviesi Mukerjee 1939
Anadara garoensis Mukerjee 1939
Anadara garoensis Mukerjee 1939
Anadara garoensis Mukerjee 1939
Scapharca ferruginea
Scapharca gendingensis
Scapharca informal n. sp. 1
Scapharca informal n. sp. 2
Bentharca informal n. sp.
Trisidos tortuosa (Linnaeus 1758)
Bivalvia - Solenida - Pharidae
Ensis informal n. sp.
Bivalvia - Cardiida - Cardiidae
Trachycardium sindensis
Bivalvia - Cardiida - Tellinidae
Apolymetis grimesi
Bivalvia - Cardiida - Mactridae
Mactra (Allomactra) informal n. sp.
Mactra (Eomactra) informal n. sp.
Mactra (Eomactra) protoreevesii Noetling 1901
recombined as Mactra (Mactra) protoreevesii
Bivalvia - Cardiida - Arcticidae
Arctica sp. Schumacher 1817
Arctica sp. Schumacher 1817
Arctica sp. Schumacher 1817
Bivalvia - Cardiida - Veneridae
Paphia (Callistotapes) liratus
Paphia (Callistotapes) liratus
Paphia (Callistotapes) liratus
Paphia (Callistotapes) pseudoliratus Vredenburg 1928
Timoclea subspadicea
Callista (Costacallista) florida (Lamarck 1818)
Callista (Costacallista) splendida (Mérian 1860)
Clementia protopapyracea (Vredenburg 1928)
Meretrix informal n. sp.
Meretrix persica Cox 1936
Pitar informal n. sp.
Pitar aff. simonnei Dey 1961
Pitar porrecta (Koenen 1894)
Callista (Costacallista) informal n. sp. 2
original and current combination Costacallista
Callista (Costacallista) sp. (Palmer 1926)
original and current combination Costacallista
Callista (Costacallista) informal sp. 1 (Palmer 1926)
original and current combination Costacallista
Callista (Costacallista) informal n. sp. 2
original and current combination Costacallista
Callista (Costacallista) sp. (Palmer 1926)
original and current combination Costacallista
Callista (Costacallista) informal sp. 1 (Palmer 1926)
original and current combination Costacallista
Callista (Costacallista) informal n. sp. 2
original and current combination Costacallista
Callista (Costacallista) sp. (Palmer 1926)
original and current combination Costacallista
Callista (Costacallista) informal sp. 1 (Palmer 1926)
original and current combination Costacallista
Bivalvia - Cardiida - Ungulinidae
Diplodonta rotundatus
Diplodonta informal n. sp.
Bivalvia - Pholadida - Corbulidae
Corbula (Solidicorbula) informal n. sp.
Corbula (Solidicorbula) informal n. sp.
Corbula (Solidicorbula) informal n. sp.
Corbula (Varicorbula) socialis (Martin 1879)
recombined as Corbula (Anisocorbula) socialis
Bivalvia - Lucinida - Lucinidae
Lucina pagana Noetling 1901
Gastropoda - Heterostropha - Acteonidae
Acteon ghoshi
Gastropoda - Heterostropha - Architectonicidae
Architectonica cyclostomum
Architectonica perspectivum (Linnaeus 1767)
recombined as Architectonica perspectiva
Gastropoda - Hipponicidae
Hipponix sp. (Defrance 1819)
Gastropoda - Rostellariidae
Rimella (Dientomochilus) javana (Martin 1879)
recombined as Varicospira javana
Gastropoda - Ficidae
Ficus cf. conditus (Brongniart 1823)
recombined as Ficus condita
Ficus conditus (Brongniart 1823)
recombined as Ficus condita
SUBSPECIES: F. conditus theoboldi
Ficus conditus (Brongniart 1823)
recombined as Ficus condita
SUBSPECIES: F. conditus theoboldi
Ficus conditus (Brongniart 1823)
recombined as Ficus condita
SUBSPECIES: F. conditus theoboldi
Gastropoda - Neogastropoda - Costellariidae
Paradrillia serana
Gastropoda - Neogastropoda - Muricidae
Murex (Chicoreus) arrakensis
original and current combination Chicoreus
Murex sp. Linnaeus 1758
Murex (Tubicauda) cf. sondeiamus
Gastropoda - Neogastropoda - Volutidae
Lyria informal n. sp.
Lyria informal n. sp.
Lyria informal n. sp.
Gastropoda - Neogastropoda - Cancellariidae
Cancellaria (Bivetopsia) dertonensis
original and current combination Bivetopsia
Cancellaria (Bivetopsia) dertonensis
original and current combination Bivetopsia
Gastropoda - Neogastropoda - Olividae
Oliva (Anazola) djocdjocarte
original and current combination Anazola
Ancilla djocdjocarte
Ancilla (Sparella) birmanica Vredenburg 1921
Ancilla (Sparella) indica Vredenburg 1925
recombined as Ancilla indica
Ancilla (Sparella) indica Vredenburg 1925
recombined as Ancilla indica
Ancilla (Sparella) indica Vredenburg 1925
recombined as Ancilla indica
Oliva (Stephona) australis Duclos 1835
SUBSPECIES: O. (S.) australis indica
    = Oliva indica Vredenburg 1925
Harzhauser et al. 2009
Oliva (Strephona) australis (Duclos 1835)
SUBSPECIES: O. (S.) australis indica
    = Oliva indica Vredenburg 1925
Harzhauser et al. 2009
Oliva (Strephona) australis (Duclos 1835)
SUBSPECIES: O. (S.) australis indica
    = Oliva indica Vredenburg 1925
Harzhauser et al. 2009
Oliva (Strephona) australis (Duclos 1835)
SUBSPECIES: O. (S.) australis indica
    = Oliva indica Vredenburg 1925
Harzhauser et al. 2009
Gastropoda - Neogastropoda - Clavatulidae
Turricula promensis (Vredenburg 1921)
Turricula promensis (Vredenburg 1921)
Turricula promensis (Vredenburg 1921)
Gastropoda - Neogastropoda - Drilliidae
Drillia intertincta
Gastropoda - Neogastropoda - Conidae
Conus (Lithoconus) ineditus (Michelotti 1861)
Conus (Lithoconus) ineditus (Michelotti 1861)
Conus (Lithoconus) ineditus (Michelotti 1861)
Conus (Leptoconus) bonneti Cossmann 1900
Gastropoda - Neogastropoda - Mangeliidae
Mangelia sp. (Loven 1846)
corrected as Cythara (Mangelia)
Gastropoda - Neogastropoda - Terebridae
Duplicaria protoduplicata
Duplicaria woodwardiana (Martin 1879)
SUBSPECIES: D. woodwardiana mindegyiensis
Terebra samarangana Martin 1884
recombined as Terebra (Noditerebra) samarangana
Terebra aff. xoci
Terebra sp. Bruguière 1789
Terebra sp. Bruguière 1789
Terebra sp. Bruguière 1789
Terebra promensis Vredenburg 1921
SUBSPECIES: T. promensis silistrensis
Terebra subtessellata d'Orbigny 1852
SUBSPECIES: T. subtessellata oligocoenica
    = Terebra perturrita Sacco 1891
Harzhauser 2007
Terebra subtessellata d'Orbigny 1852
SUBSPECIES: T. subtessellata oligocoenica
    = Terebra perturrita Sacco 1891
Harzhauser 2007
Terebra subtessellata d'Orbigny 1852
SUBSPECIES: T. subtessellata oligocoenica
    = Terebra perturrita Sacco 1891
Harzhauser 2007
Terebra aff. coxi Dey 1961
Subula sp. Schumacher 1817
synonym of Terebra
Gastropoda - Neogastropoda - Turridae
Turris (Gemmula) sindiensis (Vredenburg 1925)
Gastropoda - Neogastropoda - Nassariidae
Nassarius ovum (Martin 1879)
Nassaria neocolubrina
Nassaria birmanica (Vredenburg 1921)
Gastropoda - Neogastropoda - Columbellidae
Indomitrella cf. kobayashii
Gastropoda - Neogastropoda - Buccinidae
Cantharus eurythrosyoma
Cantharus sp. Röding 1798
Siphonalia (Kelletia) subspadicea Vredenburg 1921
Siphonalia (Kelletia) subspadicea Vredenburg 1921
Siphonalia (Kelletia) subspadicea Vredenburg 1921
Gastropoda - Neogastropoda - Fasciolariidae
Latirus duplicatus (Vredenburg 1925)
Gastropoda - Neogastropoda - Mitridae
Mitra granatiformis
Mitra (Chrysome) sowerbyi d'Orbigny 1852
recombined as Chrysame sowerbyi
Mitra (Chrysome) sowerbyi d'Orbigny 1852
recombined as Chrysame sowerbyi
Gastropoda - Bursidae
Bursa elegans
Bursa elegans
Bursa elegans
Gastropoda - Cassidae
Semicassis sp. Mörch 1852
Gastropoda - Ranellidae
Gyrineum bituberculatum
Gastropoda - Cymatiidae
Gyrineum tuberculatum (Risso 1826)
corrected as Ranella tubercularis
Gastropoda - Vermetidae
Vermetus javanus Martin 1879
Gastropoda - Naticidae
Natica coxi Mukerjee 1939
Gastropoda - Turritellidae
Protoma rectrodialatatum
Archimedella (Torculoidella) angulata (Sowerby 1840)
synonym of Kapalmerella ranikoti
Archimedella (Torculoidella) angulata (Sowerby 1840)
synonym of Kapalmerella ranikoti
Archimedella (Torculoidella) angulata (Sowerby 1840)
synonym of Kapalmerella ranikoti
Turritella pinfoldi Vredenburg 1921
Turritella heberti d'Archiac and Haime 1854
SUBSPECIES: T. heberti garoensis
Chondrichthyes - Carcharhiniformes - Galeocerdidae
Galeocerdo cuvieri (Peron and LeSueur 1822)
original and current combination Galeocerdo cuvier
Chondrichthyes - Lamniformes - Lamnidae
Isurus spallanzanii
Carcharodon sp. Smith 1838
Chondrichthyes - Myliobatiformes - Myliobatidae
Myliobatis sp. Cuvier 1816
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:outcrop
Time
Period:Neogene Epoch:Miocene
10 m.y. bin:Cenozoic 5
Key time interval:Early/Lower Miocene
Age range of interval:23.03000 - 15.97000 m.y. ago
Stratigraphy
Formation:Chengapara
Stratigraphic resolution:bed
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From Zone IB of Chengapara Formation, which regionally conformably overlies the Baghmara Fm (presumanly Early Miocene) and is unconformably overlain by the Dupitila Fm. THICKNESS: Zone is 16 m in thickness, within a ~30 m thick section. AGE: Burdigalian. STRATIGRAPHIC POSITION: From middle part of section, basal part of the Chengapara Fm.
Lithology and environment
Primary lithology: poorly lithified calcareous sandstone
Includes fossils?Y
Lithology description: SPECIFIC LITHOLOGY: Calcareous sandstone and friable 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
Preservation of anatomical detail:good
Fragmentation:occasional
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:72084
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:A. Hendy Research group:marine invertebrate
Created:2007-05-24 07:51:32 Last modified:2013-11-25 13:37:23
Access level:authorizer only Released:2007-05-24 07:51:32
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:

25532 M. Harzhauser. 2007. Oligocene and Aquitanian gastropod faunas from the Sultanate of Oman and their biogeographic implications for the western Indo-Pacific. Palaeontographica Abteilung A 280:75-121 [A. Hendy/A. Hendy]
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]