Dialipina Explained

Dialipina is an extinct genus of prehistoric marine bony fish from the Early Devonian.^{[1] [2]} It contains two species, both known from the high Arctic of Asia and North America. It was initially thought to be and sometimes still is treated as an early, basal actinopterygian^{[3] [4] [5]}, but recent phylogenetic analyses suggest that it may instead be a stem-osteichthyan.^{[6] [7]}

The following species are known:

• †D. markae Schultze, 1992 - Lochkovian of Kotelny Island, Russia
• †D. salgueiroensis Schultze, 1968 (type species) - Emsian of the Northwest Territories, Canada (Bear Rock Formation)

The early Devonian stem-gnathostome Janusiscus was described from remains from the Siberian mainland that were previously attributed to D. markae.

See also

• Prehistoric fish
• List of prehistoric bony fish

External links

• Bony fish in the online Sepkoski Database

Notes and References

1. Web site: PBDB Taxon . 2024-08-14 . paleobiodb.org.
2. Zhao . Wen-Jin . Zhu . Min . Siluro-Devonian vertebrate biostratigraphy and biogeography of China . Palaeoworld . 1 March 2010 . 19 . 1 . 4–26 . 10.1016/j.palwor.2009.11.007 . 1871-174X.
3. Book: Major Events in Early Vertebrate Evolution . 2001-02-15 . CRC Press . 978-1-134-56886-4 . Ahlberg . Per Erik.
4. Zhu . Min . Yu . Xiaobo . Wang . Wei . Zhao . Wenjin . Jia . Liantao . 2006 . A primitive fish provides key characters bearing on deep osteichthyan phylogeny . Nature . en . 441 . 7089 . 77–80 . 10.1038/nature04563 . 1476-4687.
5. Schultze . Hans-Peter . Cumbaa . Stephen L. . 2017 . A new Early Devonian (Emsian) arthrodire from the Northwest Territories, Canada, and its significance for paleogeographic reconstruction . Canadian Journal of Earth Sciences . en . 54 . 5 . 461–476 . 10.1139/cjes-2017-0013 . 0008-4077. 1807/76893 . free .
6. Friedman . Matt . Styloichthys as the oldest coelacanth: Implications for early osteichthyan interrelationships . Journal of Systematic Palaeontology . January 2007 . 5 . 3 . 289–343 . 10.1017/S1477201907002052.
7. Giles . Sam . Friedman . Matt . Brazeau . Martin D. . Osteichthyan-like cranial conditions in an Early Devonian stem gnathostome . Nature . 2 April 2015 . 520 . 7545 . 82–85 . 10.1038/nature14065. 5536226 .