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Heinzia; Temporal range: Cretaceous (Barremian age), 130.0–125.45 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
	Fossil shell of Heinzia colleti from Colombia, on display at Galerie de paléontologie et d'anatomie comparée in Paris
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	Ammonoidea
Order:	Ammonitida
Suborder:	Ammonitina
Superfamily:	Endemoceratoidea
Family:	Pulchelliidae
Subfamily:	Pulchelliinae
Genus:	Heinzia; Sayn, 1890

Heinzia is an extinct ammonoid cephalopod genus belonging to the family Pulchelliidae.^[3] They lived during the Cretaceous, in the Barremian age.^[1]^[2]

Distribution

Fossils of species within this genus have been found in the Cretaceous sediments of Colombia, France, Italy, Morocco and Spain.^[1]

^ ^a ^b ^c "The Paleobiology Database". Archived from the original on 2022-03-25. Retrieved 2021-12-17.
^ ^a ^b Sepkoski, Jack Sepkoski's Online Genus Database – Cephalopoda
^ "Heinzia caicedi". Ammonites et autres spirales (in French). Retrieved 2016-12-08.

Crioceratites
Jean Vermeulen Origine, classification et évolution des Pulchellinae (Douville) 1911 emend. Vermeulen 1995 (Pulchelliidae, Endemoceratoidea)
"Heinzia". Encyclopedia of Life (EOL). Retrieved 11 June 2023.
Wright C.W. with J.H. Callomon and M.K. Howarth (1996). "Mollusca 4 Revised: Cretaceous Ammonoidea". In Roger L. Kaesler (ed.). Treatise on Invertebrate Paleontology Part L. Vol. 4. Boulder, Colorado and Lawrence, Kansas: The Geological Society of America & University of Kansas Press. p. 111 – via Internet Archive.
Vermeulen, Jean., 1995: A new division in three parts of the Pulchelliidae family Ammonoidea Riviera Scientifique, 65-80

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