Conchodus Explained

Conchodus is an extinct genus of marine lungfish which lived during the Devonian period.^{[1] [2]}

The following species are known:^[3]

• †C. elkneri Gorisdro-Kulczycka, 1950 - Late Devonian (Frasnian) of Poland
• †C. excessus Krupina, 1990 - Late Devonian (Famennian) of Oryol, Russia
• †C. jerofejewi (Pander, 1858) - Late Devonian of Leningrad, Russia (=Cheirodus lateralis von Eichwald, 1846)^[4]
• †C. ostreaformis McCoy, 1848 (type species) - Devonian of Scotland
• †C. parvulus Bryant ex Bryant & Johnson, 1936 - Famennian of Colorado, USA^[5]
• †C. pinguiculus Krupina, 1990 - Devonian of Russia
• †C. variabilis Eastman, 1908 - Late Devonian of Iowa and Missouri, USA

An indeterminate species is known from Latvia.^[6] The species C. plicatus Dawson, 1868 of Nova Scotia is now placed in Sagenodus as S. plicatus.^[7]

Notes and References

1. Web site: PBDB Taxon . 2024-06-07 . paleobiodb.org.
2. Web site: Conchodus parvulus Bryant . 2023-05-07 . Smithsonian Institution . en.
3. Web site: Conchodontinae, Chirodipteridae . 2024-06-07 . mayatan.web.fc2.com.
4. Web site: Conchodus jerofejewi . 2024-06-07 . Fossiilid.info . en.
5. Bryant . William L. . Johnson . J. Harlan . 1936 . Upper Devonian Fish from Colorado . Journal of Paleontology . 10 . 7 . 656–659 . 0022-3360.
6. Vasiļkova . J. . Lukševičs . E. . Stinkulis . Ģ. . Zupinš . I. . 2012-04-01 . Upper Devonian vertebrate taphonomy and sedimentology from the Klunas fossil site, Tervete Formation, Latvia . Estonian Journal of Earth Sciences . 61 . 2 .
7. Carpenter . David K. . Falcon‐Lang . Howard J. . Benton . Michael J. . Grey . Melissa . 2015 . Johanson . Zerina . Early Pennsylvanian (Langsettian) fish assemblages from the Joggins Formation, Canada, and their implications for palaeoecology and palaeogeography . Palaeontology . en . 58 . 4 . 661–690 . 10.1111/pala.12164 . 0031-0239.