Lignobrycon

Lignobrycon; Temporal range: Oligocene to present PreꞒ Ꞓ O S D C P T J K Pg N
	Specimen of L. myersi
Conservation status
	; Near Threatened (IUCN 3.1)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Characiformes
Family:	Triportheidae
Genus:	Lignobrycon; C. H. Eigenmann & G. S. Myers, 1929
Species:	L. myersi
Binomial name
	Lignobrycon myersi; (P. Miranda-Ribeiro, 1956)
Synonyms
	Moojenichthys Miranda-Ribeiro, 1956;

Lignobrycon myersi is a species of characiform fish endemic to Brazil where it occurs in the Rio do Braço system. It is the only extant member of its genus.

A fossil species is also known, †Lignobrycon ligniticus (Woodward, 1898) from the Oligocene-aged Tremembé Formation of Brazil. This species was actually the first described member of the genus and was recovered from lignite deposits, hence the name Lignobrycon. It was only after the description of the fossil L. ligniticus that the extant L. myersi was identified, being described in the genus Moojenichthys. In 1998, the relationship between the fossil and extant species was identified, and L. myersi was also moved to the genus Lignobrycon, making the genus extant once again.^[2]

A second potential fossil species, †Lignobrycon altus (Santos, 1946) has also been identified from Late Pliocene/Early Pleistocene-aged shales of Brazil, but these remains are poorly preserved and it may not even represent a characiform.^[3]^[4]

References

Froese, Rainer; Pauly, Daniel (eds.). "Lignobrycon myersi". FishBase. October 2011 version.

^ Instituto Chico Mendes de Conservação da Biodiversidade (ICMBio) (2022). "Lignobrycon myersi". IUCN Red List of Threatened Species (in Brazilian Portuguese). 2022: e.T186820A1818869. doi:10.2305/IUCN.UK.2022-1.RLTS.T186820A1818869.pt. Retrieved 30 March 2025.
^ Malabarba, Maria Cláudia S. L. (1998). "Phylogeny of Fossil Characiformes and Paleobiogeography of the Tremembé Formation, São Paulo, Brazil.". Phylogeny and Classification of Neotropical Fishes. Part 1 - Fossils and Geological Evidence. pp. 69–84.
^ Abe, Kelly T.; Mariguela, Tatiane C.; Avelino, Gleisy S.; Foresti, Fausto; Oliveira, Claudio (2014-07-08). "Systematic and historical biogeography of the Bryconidae (Ostariophysi: Characiformes) suggesting a new rearrangement of its genera and an old origin of Mesoamerican ichthyofauna". BMC Evolutionary Biology. 14 (1): 152. Bibcode:2014BMCEE..14..152A. doi:10.1186/1471-2148-14-152. ISSN 1471-2148. PMC 4109779. PMID 25005252.
^ Novacek, Michael J.; Marshall, Larry G. (1976). "Early Biogeographic History of Ostariophysan Fishes". Copeia. 1976 (1): 1–12. doi:10.2307/1443767. ISSN 0045-8511. JSTOR 1443767.

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[1] Instituto Chico Mendes de Conservação da Biodiversidade (ICMBio) (2022). "Lignobrycon myersi". IUCN Red List of Threatened Species (in Brazilian Portuguese). 2022: e.T186820A1818869. doi:10.2305/IUCN.UK.2022-1.RLTS.T186820A1818869.pt. Retrieved 30 March 2025.

[2] Malabarba, Maria Cláudia S. L. (1998). "Phylogeny of Fossil Characiformes and Paleobiogeography of the Tremembé Formation, São Paulo, Brazil.". Phylogeny and Classification of Neotropical Fishes. Part 1 - Fossils and Geological Evidence. pp. 69–84.

[3] Abe, Kelly T.; Mariguela, Tatiane C.; Avelino, Gleisy S.; Foresti, Fausto; Oliveira, Claudio (2014-07-08). "Systematic and historical biogeography of the Bryconidae (Ostariophysi: Characiformes) suggesting a new rearrangement of its genera and an old origin of Mesoamerican ichthyofauna". BMC Evolutionary Biology. 14 (1): 152. Bibcode:2014BMCEE..14..152A. doi:10.1186/1471-2148-14-152. ISSN 1471-2148. PMC 4109779. PMID 25005252.

[4] Novacek, Michael J.; Marshall, Larry G. (1976). "Early Biogeographic History of Ostariophysan Fishes". Copeia. 1976 (1): 1–12. doi:10.2307/1443767. ISSN 0045-8511. JSTOR 1443767.

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