Data from: A new actinopterygian from the Late Devonian Gogo Formation, Western Australia

The study of early actinopterygians (ray-finned fishes) from the Devonian
has been hampered by imperfect preservation in the majority of taxa. The
Late Devonian (early Frasnian) Gogo Formation of north-western Western
Australia is notable in producing complete fossil actinopterygians with
exceptional three-dimensional preservation of both the dermal and
endoskeletal anatomy. Four taxa have been described and have proved
invaluable in understanding the anatomy of early representatives of this
clade. Here, we present a fifth Gogo taxon, based on a single
exceptionally preserved specimen and representing a new genus and species
of early ray-finned fish. The neurocranium was CT scanned, permitting a
detailed examination of the endocast. The new taxon possesses unusual
features including a greatly enlarged spiracular opening and extensive
spinose ornamentation on the dermal skull bones, median ridge scutes and
lepidotrichia. The endocast displays a mosaic of characters, some of which
are similar to Mimipiscis and non-actinopterygian outgroups, while other
features are more akin to Raynerius from the Late Devonian of France as
well as several stratigraphically younger taxa. A phylogenetic analysis
resolves the new form as sister taxon to fishes from the Late Devonian of
the Northern Hemisphere and all post-Devonian actinopterygians, confirming
that the assemblage of fossil ray fins from the Gogo Formation is part of
the wider Devonian actinopterygian radiation.