Dialipina

Dialipina Temporal range: Lochkovian to Emsian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Superclass:	Osteichthyes
Genus:	†Dialipina Schultze, 1968
Type species
†Dialipina salgueiroensis Schultze, 1968
Species
†D. markae Schultze, 1992 †D. salgueiroensis Schultze, 1968

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:[1]

• †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.[7]

See also

• Prehistoric fish
• List of prehistoric bony fish

References

1. "PBDB Taxon". paleobiodb.org. Retrieved 2024-08-14.
2. Zhao, Wen-Jin; Zhu, Min (1 March 2010). "Siluro-Devonian vertebrate biostratigraphy and biogeography of China". Palaeoworld. 19 (1): 4–26. doi:10.1016/j.palwor.2009.11.007. ISSN 1871-174X.
3. Ahlberg, Per Erik, ed. (2001-02-15). Major Events in Early Vertebrate Evolution. CRC Press. doi:10.1201/b12434. ISBN 978-1-134-56886-4.
4. Zhu, Min; Yu, Xiaobo; Wang, Wei; Zhao, Wenjin; Jia, Liantao (2006). "A primitive fish provides key characters bearing on deep osteichthyan phylogeny". Nature. 441 (7089): 77–80. doi:10.1038/nature04563. ISSN 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. 54 (5): 461–476. doi:10.1139/cjes-2017-0013. hdl:1807/76893. ISSN 0008-4077.
6. Friedman, Matt (January 2007). "Styloichthys as the oldest coelacanth: Implications for early osteichthyan interrelationships". Journal of Systematic Palaeontology. 5 (3): 289–343. doi:10.1017/S1477201907002052.
7. Giles, Sam; Friedman, Matt; Brazeau, Martin D. (2 April 2015). "Osteichthyan-like cranial conditions in an Early Devonian stem gnathostome". Nature. 520 (7545): 82–85. doi:10.1038/nature14065. PMC 5536226. PMID 25581798.

External links

• Bony fish in the online Sepkoski Database