Ectosteorhachis

Taxobox
name = "Ectosteorhachis"
fossil_range = Permian
regnum = Animalia
phylum = Chordata
subphylum = Vertebrata
classis = Sarcopterygii
infraclassis = Tetrapodomorpha
superordo = Osteolepidida
ordo = Osteolepiformes
familia = Osteolepidae
genus = "Ectosteorhachis"
species = "E. nitidus"
subdivision_ranks = Binomial name
subdivision =
"Ectosteorhachis nitidus"

"Ectosteorhachis" is a genus of prehistoric lobe-finned fish which lived during the Permian period (Cisuralian epoch, about 270 to 299 million years ago). It belonged to the group of Osteolepiformes and to the family of Osteolepidae. "Ectosteorhachis" lived in fresh waters.