Early Devonian Arctolepis enters the LRT basal to Ordovician Eriptychius
Jawless placoderms go way, way back
Arctolepis brevis (Eastman 1908; Heintz 1929; Miles and White 1971; Early Devonian) is a jawless placoderm more primitive than Ordovician Eriptychius in the large reptile tree (LRT, 2183 taxa).
References
Heintz A 1929. Die Downtonischen und Devonischen Vertebraten von Spitzbergen
II. Acanthaspida. Skrifeter om Svalbard og Ishavet 22:1–81.
wiki/Eriptychius
wiki/Arctolepis
Source: https://pterosaurheresies.wordpress.com/2022/12/14/early-devonian-arctolepis-enters-the-lrt-basal-to-ordovician-eriptychius/
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