Word.ws English Dictionary

galeaspid

galeaspid noun: any of the extinct class †Galeaspida of jawless fish.

galeaspid: any of the extinct class †Galeaspida of jawless fish
Image: Apokryltaros, CC BY-SA 4.0, via Wikimedia Commons

Noun

galeaspid (plural galeaspids)

  1. Any of the extinct class †Galeaspida of jawless fish.
    • An interesting example is provided by the “polybranchic” condition in extinct jawless vertebrate taxa, which display an extremely large number of gills, such as some early Devonian galeaspids and the late Devonian euphaneropids.2007, David J. McKenzie, Anthony P. Farrell, Colin J. Brauner, Fish Physiology: Volume 26: Primitive Fishes, page 41
    • The jawless fish (termed ‘agnathans’) evolved and flourished during the Silurian Period (435-410 million years ago). These included bizarre forms with weird bony head armours, such as the bizarre galeaspids from China and the pituriaspids from Australia.2011, Jeffrey Stilwell, John Long, Frozen in Time: Prehistoric Life in Antarctica, page 64

Forms of galeaspid

pluralgaleaspids

Origin of galeaspid

From Latin galea (“helmet”) + aspis (from Ancient Greek ἀσπίς (aspís, “round shield”)); compare translingual †Galeaspida.

Questions about galeaspid

What does galeaspid mean?
Galeaspid means any of the extinct class †Galeaspida of jawless fish.
What part of speech is galeaspid?
Galeaspid is a noun.
What is the plural of galeaspid?
The plural of galeaspid is galeaspids.

Words near galeaspid in the dictionary

  1. Galeano
  2. Galeanos
  3. galeanthropy
  4. galeas
  5. galeases
  6. galeaspid
  7. galeaspidin
  8. galeaspids
  9. galeate
  10. galeated
  11. Galeazzi fracture

Source and license

Adapted from Wiktionary: galeaspid (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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