Heintzosteus

Taxobox
name = "Heintzosteus"
fossil_range = Late Devonian
regnum = Animalia
phylum = Chordata
subphylum = Vertebrata
infraphylum = Gnathostomata
classis = Placodermi
ordo = Arthrodira
familia = Phlyctaeniidae
genus = "Heintzosteus"
species = "H. brevis"
binomial = "Heintzosteus brevis"

"Heintzosteus" is an extinct genus of placoderm fish, which lived during the Late Devonian period of Spitsbergen, Norway.