Douvilleiceras — Douvilleiceras
Douvilleiceras Hectonichus, Wikimedia Commons, CC BY SA 3.0

Ammonoid

Douvilleiceras

Tractor ammonite

Douvilleiceras mammillatum is the knobbly 'tractor' ammonite of the Albian of Madagascar, France and England, with rows of tubercles along coarse ribs. Madagascan specimens with iridescent shell are cheap and impressive; the tubercles are frequently touched up with paint and whole shells may be resin-coated. It is a fine companion to Cleoniceras.

PhylumMollusca
ClassCephalopoda
OrderAmmonitida
FamilyDouvilleiceratidae
GroupAmmonoid
Rank (PBDB)genus· Paleobiology Database
AuthorGrossouvre 1894· Paleobiology Database
Classification (PBDB)Mollusca › Cephalopoda › Ammonitida › Douvilleiceratidae· Paleobiology Database
Range (PBDB)126–89.8 Ma· Paleobiology Database
PBDB occurrences202· Paleobiology Database

Elsewhere

Cite this article

Stratum Strata. "Douvilleiceras" (Taxon). Stratum Strata pack 2026.09, as of 2026-09-21. https://stratum.black/strata/taxa/douvilleiceras. Accessed 2026-09-21.

@misc{stratum-douvilleiceras,
  title        = {Douvilleiceras},
  author       = {{Stratum Strata}},
  howpublished = {\url{https://stratum.black/strata/taxa/douvilleiceras}},
  year         = {2026},
  note         = {Taxon article, Stratum Strata pack 2026.09, as of 2026-09-21; sources: stratum, pbdb, wikidata, commons, nhm. Accessed 2026-09-21.}
}

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