Palaeospondylus
noun
Palaeo·spondylus
: a genus of extinct primitive vertebrates that are known from a single form (P. gunni) of the Devonian of Scotland that is usually about one inch long with a large skull, branchial arches and jaws highly modified or possibly absent, a segmented vertebral column, and the caudal fin and limb girdles well-developed, and that is usually placed among the Placodermi but sometimes considered a cyclostome see cycliae
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“Palaeospondylus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Palaeospondylus. Accessed 22 Nov. 2024.
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