Definitions
from The Century Dictionary.
- noun See the extract.
Etymologies
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Help support Wordnik (and make this page ad-free) by adopting the word notostome.
Sorry, no example sentences found.
chained_bear commented on the word notostome
"A dorsal opening on the midline of the skull in certain fossil armoured fishes (erroneously supposed to represent an ancestral mouth); the pineal foramen." (OED)
The dictionary helpfully adds, "The fossils discussed in the quots. are now identified as placoderms."
September 8, 2008