Micraster

Phylum	Echinodermata
Class	Echinoidea
Order	Spatangoida
Family	Micrasteridae
Group	Echinoid
Rank (PBDB)	genus· Paleobiology Database
Author	Agassiz 1836· Paleobiology Database
Classification (PBDB)	Echinodermata › Echinoidea › Spatangoida › Micrasteridae· Paleobiology Database
Range (PBDB)	100–56 Ma· Paleobiology Database
PBDB occurrences	192· Paleobiology Database

Photographs

Micraster — Micraster (NHMUK PV P 14212 $1) — Micraster (NHMUK PV P 14212 $1) — © The Trustees of the Natural History Museum, London, Natural History Museum (London) Data Portal, CC BY 4.0

Micraster — Micraster (NHMUK PV P 17273 (e) (1)) — Micraster (NHMUK PV P 17273 (e) (1)) — © The Trustees of the Natural History Museum, London, Natural History Museum (London) Data Portal, CC BY 4.0

Micraster — Micraster (NHMUK PV OR 43512 a $1) — Micraster (NHMUK PV OR 43512 a $1) — © The Trustees of the Natural History Museum, London, Natural History Museum (London) Data Portal, CC BY 4.0

Elsewhere

Cite this article

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

BibTeX · CSL-JSON

@misc{stratum-micraster,
  title        = {Micraster},
  author       = {{Stratum Strata}},
  howpublished = {\url{https://stratum.black/strata/taxa/micraster}},
  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.}
}

Citations carry the pack version and the article's as-of date so they resolve to the same text later. The facts themselves belong to the sources listed below; cite those for the science.

Photographs

Age

Elsewhere