Toxasteridae

Toxasteridae is an extinct family of sea urchins.

Toxasteridae
Temporal range: Cretaceous [1]
Fossil of Heteraster oblongus from France, on display at Galerie de paléontologie et d'anatomie comparée in Paris
Scientific classification
Kingdom:
Animalia
Phylum:
Echinodermata
Class:
Echinoidea
Superorder:
Atelostomata
Order:
Spatangoida
Family:
Toxasteridae

J. Lambert 1920

These slow-moving shallow infaunal deposit feeder-detritivores lived during the Cretaceous period, from 145.5 to 61.7 Ma.[1]

Genera
  • Adytaster
  • Aphelaster
  • Douvillaster
  • Enallopneustes
  • Heteraster
  • Isaster
  • Isomicraster
  • Macraster
  • Mokotibaster
  • Palmeraster
  • Polydesmaster
  • Toxaster

[1]

gollark: That's 61 bits, which seems fine.
gollark: Any sanely designed system will be using a slow hashing function like argon2, not just "troløłolol SHA256 once".
gollark: I mean, if you have long enough wordlists.
gollark: It's still fairly high-entropy, is it not?
gollark: Being able to break the encryption on stuff is less obvious and can be done in bulk on intercepted data.

References
  1. The Paleobiology Database


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