Oral disc of Lethenteron reissneri, ZIN 25204, 146 mm TL with two rows of posterials from Tym’ River, Sakhalin Island, Russia.

 
 
  Part of: Naseka AM, Renaud CB (2020) Morphology-based taxonomic re-assessment of the Arctic lamprey, Lethenteron camtschaticum (Tilesius, 1811) and taxonomic position of other members of the genus. ZooKeys 991: 1-67. https://doi.org/10.3897/zookeys.991.54938