Taxon calibrated
MRCA Sternopygus and Apteronotus
Minimum age
7.246 Ma
Maximum 95% CI age
117.6 Ma
Albert & Fink (2007)
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