Here are some color pencil sketches of some Paleozoic agnathans I drew many years ago (maybe 6 or 7 years ago). Time is scarce, but seeing these again I somehow feel inclined to start sketching some new concepts again
Polybranchiaspis yunannensis (Galeaspida)
Early Devonian
Qujing, Yunnan, China
Haikouella lanceolata (Agnatha, Haikouellidae)
Early Cambrian
Chengjiang, Yunnan, China
Stensiopelta pustulosa (Cephalaspida)
Early Devonian
Ternopil, Ukraine
Pteraspis (Pteraspiformes)
Early Devonian
Ternopil, Ukraine