Rhachiosteus

Rhachiosteus
Temporal range: Devonian: Givetian - Frasnian, 387.7–372.2 Ma
Artist's reconstruction of Rhachiosteus (with Trematosteus in the background)
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: †Placodermi
Order: †Arthrodira
Suborder: †Brachythoraci
Clade: †Eubrachythoraci
Clade: †Pachyosteomorphi
Genus: †Rhachiosteus
Gross, 1938
Species
  • Rhachiosteus pterygiatus Gross, 1938 (type)

Rhachiosteus is an extinct monospecific genus of arthrodire placoderm from the Middle to Late Devonian of Germany. It is known only from a single specimen, which may be a larval or juvenile form, as the skull of said specimen is only 19 millimetres long.[1]

  1. ^ Denison, Robert (1978). Placodermi Volume 2 of Handbook of Paleoichthyology. Stuttgart New York: Gustav Fischer Verlag. p. 128. ISBN 9780895740274.