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Glite Dictionary
🌿 A brown seaweed 🪨 A seaweed fossil
fucoid

fucoid

9.9
A fossil mark in rock left by ancient seaweed
  • noun
  • /ˈfjuːkɔɪd/
  • Specialized
translation icon : fósil de fucóide
  • Ancient rocks in the region often contain fucoid markings, evidence of prehistoric algae.

Examples

  • Some geologists once mistook ripple marks for fucoids, confusing them with fossilized seaweed.

  • The fucoid fossils were discovered in the coastal cliffs.

  • The paleontologist carefully studied the fucoid to learn about ancient ocean life.

  • Many fucoids can be found in sedimentary rock layers.

  • The paleontologist carefully studied the fucoid fossils to learn about ancient ocean life.

  • Ancient rocks in the region often contain fucoid markings, evidence of prehistoric algae.

  • The fucoid fossils were discovered in the coastal cliffs, revealing insights into past marine ecosystems.

Compounds

fucoid algae
  • Specialized
9.9

Brown seaweed that grows on rocks along the coast

Surface Forms

fucoid singular
fucoids plural

Morphology

fucoid = fucus (opaque) = fuc + oid

The word is formed from 'fucus' (a genus of seaweed) and '-oid', but 'fucus' is not a familiar English word, so the meaning is not transparent to most learners.

Etymology

Fucoid comes from the Latin fucus, meaning 'seaweed', and the ending -oid, meaning 'like', as in humanoid or asteroid. So a fucoid fossil is a mark or cast 'like' seaweed left in rock, which is why geologists call seaweed impressions by this name.