|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
|A. M. Murray et al. 2018||Deep-bodied osteoglossomorph fishes with six hypurals, no epurals, one distinct uroneural, six pelvic fin rays, kidney-shaped opercle ornamented laterally with striations radiating from area of facet for articulation with hyomandibula,
and large dorsal and anal fins positioned posteriorly. Differs from Osteoglossidae and Notopteridae by having 18 principal rays (16 branched) in the caudal fin; from Notopteridae by lacking a long anal fin confluent with the caudal fin, and from Mormyridae by lacking the rounded snout, elongate jaw bones and other specializations of those families; from Hiodontiformes by lacking the posteriorly recurved spine on the opercle; and from basal members of the superorder by having the supraorbital sensory canal
ending in the frontal not the parietal (which is similar to the more derived Osteoglossidae), and having the dorsal and ventral arms of the post-temporal equal in length (this last feature is probable, but not clearly visible in the type species).
Collections (3 total)
|Time interval||Ma||Country or state||Original ID and collection number|
|Tiffanian - Paleocene||Canada (Alberta)||Osteoglossomorpha indet. (22732)|
|Late/Upper Paleocene||Canada (Alberta)||J. tanyourus (191920)|
|Clarkforkian||USA (North Dakota)||J. triangulpterus (21372)|