Ligulalepis

Ligulalepis
Temporal range: Ludlow–Emsian
Skull of Ligulalepis toombsi
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Clade: Osteichthyes
Genus: †Ligulalepis
Schultze 1968
Type species
†Ligulalepis toombsi
Schultze 1968
Species
  • †?L. sinensis Burrow, Turner & Wang 2009
  • †L. toombsi Schultze 1968
  • †L. yunnanensis Wang & Dong 1989

Ligulalepis is an extinct genus of stem-osteichthyans which lived from the Silurian to the Early Devonian.

The following species are known:

Life restoration of L. toombsi

Ligulalepis was first described from isolated scales found in the Murrumbidgee Group limestones of New South Wales (Emsian age) by Hans-Peter Schultze (1968) and further material described by Burrow (1994). A nearly complete skull found in the same general location was described in Nature by Basden et al. (2000) claiming the genus was closely related to basal ray-finned fishes (Actinopterygii). In 2015 Flinders University student Benedict King found a more complete new skull of this genus which was formally described by Clement et al. (2018), showing Ligulalepis to be on the stem of all osteichthyans.

See also

References

  1. ↑ Sepkoski, Jack (2002). "A compendium of fossil marine animal genera". Bulletins of American Paleontology. 364: 560. Archived from the original on 2011-07-23. Retrieved 2009-02-27.
  2. ↑ Clement, Alice M; King, Benedict; Giles, Sam; Choo, Brian; Ahlberg, Per E; Young, Gavin C; Long, John A (2018-05-29). "Neurocranial anatomy of an enigmatic Early Devonian fish sheds light on early osteichthyan evolution". eLife. 7 e34349. doi:10.7554/eLife.34349. ISSN 2050-084X. PMC 5973833. PMID 29807569.
  3. ↑ Basden, Alison M.; Young, Gavin C. (2001-12-14). "A primitive actinopterygian neurocranium from the Early Devonian of southeastern Australia". Journal of Vertebrate Paleontology. 21 (4). Taylor & Francis: 754–766. doi:10.1671/0272-4634(2001)021[0754:APANFT]2.0.CO;2. ISSN 0272-4634.
  4. ↑ Burrow, Carole Jan; Turner, Susan; Wang, S. (2000). "Devonian microvertebrates from Longmenshan, Sichuan, China: Taxonomic assessment". CFS Courier Forschungsinstitut Senckenberg. 223.
  5. ↑ Zhao, Wen-Jin; Zhu, Min (2015-03-01). "A review of Silurian fishes from Yunnan, China and related biostratigraphy". Palaeoworld. Geologic and biotic events and their relationships during the Early to Middle Paleozoic. 24 (1): 243–250. doi:10.1016/j.palwor.2015.02.004. ISSN 1871-174X.
  6. ↑ Schultze, Hans-Peter (1968). "Palæoniscoidea-Schuppen aus dem Unterdevon Australiens und Kanadas und aus dem Mitteldevon Spitzbergens". Bulletin of the British Museum. 16: 343–368.
  7. ↑ Burrow, Carole J. (1994). "Form and function in scales of Ligulalepis toombsi Schultze, a palaeoniscoid from the Early Devonian of Australia". Records of the South Australian Museum. 27 (2): 175–185.
  8. ↑ Basden, Alison M.; Young, Gavin C.; Coates, Michael I.; Ritchie, Alex (January 2000). "The most primitive osteichthyan braincase?". Nature. 403 (6766): 185–188. Bibcode:2000Natur.403..185B. doi:10.1038/35003183. PMID 10646601. S2CID 4362712.
  9. ↑ Clement, Alice M; King, Benedict; Giles, Sam; Choo, Brian; Ahlberg, Per E; Young, Gavin C; Long, John A (29 May 2018). "Neurocranial anatomy of an enigmatic Early Devonian fish sheds light on early osteichthyan evolution". eLife. 7 e34349. doi:10.7554/eLife.34349. PMC 5973833. PMID 29807569.