Genus: Heteroptychodus YABE & OBATA, 1930
Etymology:
Species: steinmanni YABE & OBATA, 1930
Etymology:
= Ptychodus steinmanni YABE & OBATA, 1930
Holotype:
Locality: Yanagidani, Kamikatasu-cho, Katsuura-gun, Tokusima Prefecture, Shikoku, Japan.
Horizon: Tatsukawa Formation, Monobegawa Group.
Biostratigraphy:
Age: Hautervian Stage, Late Neocomian Subpoch, Middle Early Cretaceous Epoch, Early Cretaceous.
Material: Tooth.
Referred material:
= Heteroptychodus aff. steinmanni CAPPETTA, BUFFETAUT, CUNY & SUTEETHORN, 2006
Locality: Khok Pha Suam Locality, near the town of Sri Muang Mai, Ubon Ratchathani Province, south-eastern part of the Khorat Plateau, north-east Thailand.
Horizon: Khok Krut Formation.
Biostratigraphy:
Age: Probably Aptian-Albian Stage, Gallic Subepoch, Late Early Cretaceous Epoch, Early Cretaceous.
Material:
SDRC 9: Anterior tooth.
SDRC 10: Anterior tooth.
SDRC 11: Latero-anterior tooth.
SDRC 12: Anterior tooth.
SDRC 13: Lateral tooth.
SDRC 14: Laterial tooth.
SDRC 15: Lateral tooth.
SDRC 16: Very lateral tooth.
Numbers not given: 12 teeth.
CUNY, SUTETTHORN, KAMHA & BUFFETAUT, 2008
Locality: Phu PHan Thong, Phu Wat, Ban huai dua, Huai Lao Yang, Nong Bua Lamphu Province, Thailand.
Horizon: Sao Kua Formation.
Biostratigraphy:
Age: Early Cretaceous.
Material:
Number: Not given:
Locality: PHu Wiang IA, Khon Kaen Province, Thailand.
Horizon: Sao Kua Formation.
Biostratigraphy:
Age: Early Cretaceous.
Material:
Number: Not given:
Locaity: Phu Kum Kao, Phu Mai Paw, Kalasin Province, Thailand.
Horizon: Sao Kua Formation.
Biostratigraphy:
Age: Early Cretaceous.
Material:
Number: Not given:
Locality: Phuu PHok, PHu Noi, Sakhon Nakhon Province, Thailand.
Horizon: Sao Kua Formation.
Biostratigraphy:
Age: Early Cretaceous.
Material:
Number: Not given:
Locality: Non Liam, Chaiya Phum Province, Thailand.
Horizon: Sao Kua Formation.
Biostratigraphy:
Age: Early Cretaceous.
Material:
Number: Not given:
Locality: Khok Phu Suam, bon Ratchathani Province, Thailand.
Horizon: Khok Kruat Formation.
Biostratigraphy:
Age: Aptian Stage, Middle Gallic Subepoch, Late Early Cretaceous Epoch, Early Cretaceous.
Material:
Note: TF 7679: Pathologic tooth.
Locality: San Ram, Ihon Kaen Province, Thailand.
Horizon: Khok Kruat Formation.
Biostratigraphy:
Age: Aptian Stage, Middle Gallic Subepoch, Late Early Cretaceous Epoch, Early Cretaceous.
Material: More than 170 partial teeth from Khok Pha Suam, including TF 7647-50 and TF 7679, pluse four teeth probably belonging to juveniles (including TF 7655). Some theeth were also found at San Ram, and more than 150 teeth were also retrived form the Sao Kua Formation, including TF 7675, 7676 and 7678 (Cuny et al, 2005, 2006).
CUNY, SUTEETHORN, KAMHA, BUFFETAUT & PHILIPPE, 2006
Locality: From overbank of the road 210 between Nong Bua Lamphu and Udon Thani, near the village of Phu Phan Thong, Non Bua Lamphu Province, Northeast Thailand.
Horizon: Sao Kua Formation.
Biostratigraphy:
Age: Early Cretaceous.
Material:
Number: Not given:
Material:
TF 7675, 7676: Fragmentary teeth.
Numbers: Not given: 130+ teeth.
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Species: chuvalovi (NESSOV, GLUCKMAN & MERTINIENE,) CUNY, SUTEETHORN, KAMHA & BUFFETAUT, 2008
= Asiadontus chuvalovi NESSOV, GLUCKMAN & MERTINIENE
Etymology:
Holotype: Zoological Insititute of the Russian Academy of Sciences in St. Petersburg, 113/1278
Locality;
Horizon:
Biostratigraphy:
Age:
Mateiral: Tooth.
Referred material:
114/12178, 115/12178: Teeth.
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Species: kokutensis (CUNY, LAOJUMPON, CHEYCHIW & LAUPRASERT, 2010)
Etymology:
= Heteroptychodus kokutensis CUNY, LAOJUMPON, CHEYCHIW & LAUPRASERT, 2010
Holotype: PRCMC8
Locality: Near Ban Ao Kalang, Kut Island (Ko Kut in Thai), eastern part of the Gulf of Thailand, South South East Chang Island, Trad Province, Thailand.
Horizon: Khorat Group.
Biostratigraphy:
Age: Early Cretaceous.
Material: Crown.
Referred material:
MRCMC1-7, 9-14: 27 more or less complete crowns.
CUNY, LIARD, DEESRI, LIARD, KHAMHA, & SUTEETHORN, 2014
Locality: Kham Phok, north of the village of Ban Kham Phok, Khamcha-I district, Mukdahn Province, northeastern Thailand.
Horizon: Phu Kradung Formation, Khorat Group.
Biostratigraphy:
Age: Late Jurassic-Early Cretaceous.
Material:
SM2012-1-019, and numbers not given: 19 more or less fragmentary crowns.
Locality: Sang Khae, Kham Muang District, Kalasin Province, northeastern Thailand.
Horizon: Phu Kradung Formation, Khorat Group.
Biostratigraphy:
Age: Late Jurassic-Early Cretaceous.
Material:
Number: Not given: 1 fragmentary crown.