- Taxon calibrated
- MRCA Sternopygus and Apteronotus
- Minimum age
- 7.246 Ma
- Maximum 95% CI age
- 117.6 Ma
- Authority
- Albert & Fink (2007)
- Locality
- Upper Yecua Formation, Bolivia
- Age Authority
- Albert and Fink (2007), age estimate derived from Gradstein et al. (2012)
- Outgroup sequence
- Humboldtichthys kirschbaumi (MRCA Sternopygus and Apteronotus, 7.246 Ma)
- Characiformes indet. (Total group Characiformes, 93.9 Ma)
- Rubiesichthys gregalis (Chanidae vs Kneriidae, 126.3 Ma)
- Tischlingerichthys viohli (Crown Otomorpha, 150.94 Ma)
- Leptolepides haerteisi (Total group Euteleostei, 150.94 Ma)
- Anaethalion zapporum (Crown Teleostei, 151.2 Ma)
- Occithrissops willsoni (stem Teleostei 5, 166.1 Ma)
- Leptolepis coryphaenoides (stem Teleostei 4, 181.7 Ma)
- Dorsetichthys bechei (stem Teleostei 3, 193.81 Ma)
- Knerichthys bronni (stem Teleostei 2, 221 Ma)
- Prohalecites porroi (stem Teleostei 1, 236 Ma)
- Watsonulus (stem Halecomorphi 1, 251.2 Ma)
- Taxa this fossil might apply to:
- Class: Actinopteri
- Subclass: Neopterygii
- Infraclass: Teleostei
- Megacohort: Osteoglossocephalai
- Supercohort: Clupeocephala
- Cohort: Otomorpha
- Subcohort: Ostariophysi
- Section: Otophysa
- Superorder: Characiphysae
- Order: Gymnotiformes
- Suborder: Sternopygoidei