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Chonta, Peru

Formation	Chonta
Age:	93.9 - 86.3 Ma Late/Upper Cretaceous
Interval	Turonian - Coniacian
Lithology	shale/siltstone
Number of Collections	4
Number of Occurrences	73

Recorded Sample Locations

Location	Region	Stratigraphic Name
Río Cushabatay [Chonta Fm]	Loreto, Peru	Chonta
Station 39 - Pilsbry	Ucayali, Peru	Chonta
Pongo de Manseriche [Chonta Fm]	Condorcanqui Province, Amazonas, Peru	Chonta

Recorded Fossils

Accepted Name	Type	Hierarchy	Age
Hemiaster sp. genus	6	Animalia : Echinodermata : Echinoidea : Spatangoida : Hemiasteridae : *Hemiaster*	93.9 - 86.3 Ma Late/Upper Cretaceous
Mecaster fourneli species	7	Animalia : Echinodermata : Echinoidea : Spatangoida : Hemiasteridae : Mecaster : *Mecaster fourneli*	93.9 - 86.3 Ma Late/Upper Cretaceous
Arca sp. genus	6	Animalia : Mollusca : Bivalvia : Arcida : Arcidae : *Arca*	113 - 100.5 Ma Early/Lower Cretaceous
Cucullaea sp. genus	6	Animalia : Mollusca : Bivalvia : Arcida : Cucullaeidae : *Cucullaea*	93.9 - 86.3 Ma Late/Upper Cretaceous
Cucullaea (Idonearca) maresi species	7	Animalia : Mollusca : Bivalvia : Arcida : Cucullaeidae : Cucullaea : *Cucullaea (Idonearca) maresi*	93.9 - 86.3 Ma Late/Upper Cretaceous
Cardium sp. genus	6	Animalia : Mollusca : Bivalvia : *Cardium*	93.9 - 86.3 Ma Late/Upper Cretaceous
Protocardia sp. genus	6	Animalia : Mollusca : Bivalvia : Cardiida : Cardiidae : *Protocardia*	113 - 100.5 Ma Early/Lower Cretaceous
Protocardia hillana species	7	Animalia : Mollusca : Bivalvia : Cardiida : Cardiidae : Protocardia : *Protocardia hillana*	113 - 100.5 Ma Early/Lower Cretaceous
Inoceramus (Actinoceramus) concentricus species	7	Animalia : Mollusca : Bivalvia : Myalinida : Inoceramidae : Actinoceramus : *Inoceramus (Actinoceramus) concentricus*	113 - 100.5 Ma Early/Lower Cretaceous
Nucula sp. genus	6	Animalia : Mollusca : Bivalvia : Nuculanida : Nuculanidae : *Nucula*	113 - 100.5 Ma Early/Lower Cretaceous
Ilymatogyra (Afrogyra) africana species	7	Animalia : Mollusca : Bivalvia : Ostreida : Gryphaeidae : Ilymatogyra : *Ilymatogyra (Afrogyra) africana*	113 - 100.5 Ma Early/Lower Cretaceous
Nicaisolopha nicaisei species	7	Animalia : Mollusca : Bivalvia : Ostreida : Ostreidae : Nicaisolopha : *Nicaisolopha nicaisei*	93.9 - 86.3 Ma Late/Upper Cretaceous
Lima sp. genus	6	Animalia : Mollusca : Bivalvia : Limida : Limidae : *Lima*	93.9 - 86.3 Ma Late/Upper Cretaceous
Lima (Plagiostoma) grenieri species	7	Animalia : Mollusca : Bivalvia : Pectinida : Limidae : Plagiostoma : *Lima (Plagiostoma) grenieri*	93.9 - 86.3 Ma Late/Upper Cretaceous
Plicatula sp. genus	6	Animalia : Mollusca : Bivalvia : Pectinida : Plicatulidae : *Plicatula*	113 - 100.5 Ma Early/Lower Cretaceous
Pholadomya sp. genus	6	Animalia : Mollusca : Bivalvia : Pholadomyidae : *Pholadomya*	93.9 - 86.3 Ma Late/Upper Cretaceous
Liopistha sp. genus	6	Animalia : Mollusca : Bivalvia : Poromyidae : *Liopistha*	93.9 - 86.3 Ma Late/Upper Cretaceous
Roudairia sp. genus	6	Animalia : Mollusca : Bivalvia : Venerida : Arcticidae : *Roudairia*	93.9 - 86.3 Ma Late/Upper Cretaceous
Paphia sp. genus	6	Animalia : Mollusca : Bivalvia : Venerida : Veneridae : *Paphia*	113 - 100.5 Ma Early/Lower Cretaceous
Buchiceras bilobatum species	7	Animalia : Mollusca : Cephalopoda : Ammonoidea : Acanthoceratidae : Buchiceras : *Buchiceras bilobatum*	93.9 - 86.3 Ma Late/Upper Cretaceous
Brancoceras sp. genus	6	Animalia : Mollusca : Cephalopoda : Ammonoidea : Brancoceratidae : *Brancoceras*	113 - 100.5 Ma Early/Lower Cretaceous
Coilopoceras sp. genus	6	Animalia : Mollusca : Cephalopoda : Ammonoidea : Coilopoceratidae : *Coilopoceras*	93.9 - 86.3 Ma Late/Upper Cretaceous
Barroisiceras sp. genus	6	Animalia : Mollusca : Cephalopoda : Ammonoidea : Collignoniceratidae : *Barroisiceras*	93.9 - 86.3 Ma Late/Upper Cretaceous
Desmophyllites sp. genus	6	Animalia : Mollusca : Cephalopoda : Ammonoidea : Desmoceratidae : *Desmophyllites*	93.9 - 86.3 Ma Late/Upper Cretaceous
Puzosia sp. genus	6	Animalia : Mollusca : Cephalopoda : Ammonoidea : Desmoceratidae : *Puzosia*	93.9 - 86.3 Ma Late/Upper Cretaceous
Glottoceras attenuatum species	7	Animalia : Mollusca : Cephalopoda : Ammonoidea : Knemiceratidae : Glottoceras : *Glottoceras attenuatum*	113 - 100.5 Ma Early/Lower Cretaceous
Glottoceras crassicostatum species	7	Animalia : Mollusca : Cephalopoda : Ammonoidea : Knemiceratidae : Glottoceras : *Glottoceras crassicostatum*	113 - 100.5 Ma Early/Lower Cretaceous
Glottoceras crassinodosum species	7	Animalia : Mollusca : Cephalopoda : Ammonoidea : Knemiceratidae : Glottoceras : *Glottoceras crassinodosum*	113 - 100.5 Ma Early/Lower Cretaceous
Glottoceras moorei species	7	Animalia : Mollusca : Cephalopoda : Ammonoidea : Knemiceratidae : Glottoceras : *Glottoceras moorei*	113 - 100.5 Ma Early/Lower Cretaceous
Glottoceras semicostatum species	7	Animalia : Mollusca : Cephalopoda : Ammonoidea : Knemiceratidae : Glottoceras : *Glottoceras semicostatum*	113 - 100.5 Ma Early/Lower Cretaceous
Knemiceras sp. genus	6	Animalia : Mollusca : Cephalopoda : Ammonoidea : Knemiceratidae : *Knemiceras*	113 - 100.5 Ma Early/Lower Cretaceous
Oxytropidoceras sp. genus	6	Animalia : Mollusca : Cephalopoda : Ammonoidea : Brancoceratidae : *Oxytropidoceras*	113 - 100.5 Ma Early/Lower Cretaceous
Prolyelliceras mathewsi species	7	Animalia : Mollusca : Cephalopoda : Ammonoidea : Prolyelliceratidae : Prolyelliceras : *Prolyelliceras mathewsi*	113 - 100.5 Ma Early/Lower Cretaceous
Prolyelliceras ulrichi species	7	Animalia : Mollusca : Cephalopoda : Ammonoidea : Prolyelliceratidae : Prolyelliceras : *Prolyelliceras ulrichi*	113 - 100.5 Ma Early/Lower Cretaceous
Eulophoceras sp. genus	6	Animalia : Mollusca : Cephalopoda : Ammonoidea : Sphenodiscidae : *Eulophoceras*	93.9 - 86.3 Ma Late/Upper Cretaceous
Lenticeras sp. genus	6	Animalia : Mollusca : Cephalopoda : Ammonoidea : Sphenodiscidae : *Lenticeras*	93.9 - 86.3 Ma Late/Upper Cretaceous
Lenticeras baltai species	7	Animalia : Mollusca : Cephalopoda : Ammonoidea : Sphenodiscidae : Lenticeras : *Lenticeras baltai*	93.9 - 86.3 Ma Late/Upper Cretaceous
Paralenticeras sp. genus	6	Animalia : Mollusca : Cephalopoda : Ammonoidea : Sphenodiscidae : *Paralenticeras*	93.9 - 86.3 Ma Late/Upper Cretaceous
Heterotissotia sp. genus	6	Animalia : Mollusca : Cephalopoda : Ammonoidea : Tissotiidae : *Heterotissotia*	93.9 - 86.3 Ma Late/Upper Cretaceous
Tissotia sp. genus	6	Animalia : Mollusca : Cephalopoda : Ammonoidea : Tissotiidae : *Tissotia*	93.9 - 86.3 Ma Late/Upper Cretaceous
Tissotia fourneli species	7	Animalia : Mollusca : Cephalopoda : Ammonoidea : Tissotiidae : Tissotia : *Tissotia fourneli*	93.9 - 86.3 Ma Late/Upper Cretaceous
Tissotia halli species	7	Animalia : Mollusca : Cephalopoda : Ammonoidea : Tissotiidae : Tissotia : *Tissotia halli*	93.9 - 86.3 Ma Late/Upper Cretaceous
Tissotia steinmanni species	7	Animalia : Mollusca : Cephalopoda : Ammonoidea : Tissotiidae : Tissotia : *Tissotia steinmanni*	93.9 - 86.3 Ma Late/Upper Cretaceous
Vascoceras amieirense species	7	Animalia : Mollusca : Cephalopoda : Ammonitida : Vascoceratidae : Vascoceras : *Vascoceras amieirense*	93.9 - 89.8 Ma Late/Upper Cretaceous
Fusinus sp. genus	6	Animalia : Mollusca : Gastropoda : Neogastropoda : Fasciolariidae : *Fusinus*	93.9 - 86.3 Ma Late/Upper Cretaceous
Epitonium sp. genus	6	Animalia : Mollusca : Gastropoda : Epitoniidae : *Epitonium*	113 - 100.5 Ma Early/Lower Cretaceous
Natica sp. genus	6	Animalia : Mollusca : Gastropoda : Littorinimorpha : Naticidae : *Natica*	93.9 - 86.3 Ma Late/Upper Cretaceous
Turritella sp. genus	6	Animalia : Mollusca : Gastropoda : Turritellidae : *Turritella*	93.9 - 86.3 Ma Late/Upper Cretaceous

References

Kummel B. (1948) Geological reconnaissance of the Contamana region, Peru, Geological Society America Bulletin 59, 1217-1265

Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!

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