Taxon calibrated
MRCA Sphoeroides, Tetraodon
Minimum age
32.02 Ma
Maximum 95% CI age
65.48 Ma
Authority
Bannikov et al. (2016)
Locality
Lower Khadum Horizon, Caucasus
Age Authority
See argumentation in Benton et al. (2015), calibration 40; specimen derives from same geological unit
Outgroup sequence
Archaeotetraodon winterbottomi (MRCA Sphoeroides, Tetraodon, 32.02 Ma)
Heptadiodon echinus (Total group Diodontidae, 49 Ma)
Balkaria histiopterygia (Total group Tetraodontoidei, 55.8 Ma)
Gasterorhamphosus zuppichinii (Total group Macrorhamphosa, 69.71 Ma)
Aipichthys velifer (Total group Lampridformes, 98 Ma)
Stichocentrus liratus (Total group Holocentroidei, 98 Ma)
Apateodus glyphodus (Total group Aulopiformes, 103.13 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:
Family: Tetraodontidae
Order: Tetraodontiformes