Dastilbe
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| D. crandalli fossil from Brazil | |
| Scientific classification Edit this classification | |
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| Binomial name | |
| Template:Taxon infoTemplate:Taxon italics Jordan, 1910[1]
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| Synonyms | |
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Dastilbe is an extinct genus of prehistoric marine & freshwater ray-finned fish from the Early Cretaceous of Brazil. It was a relative of modern milkfish.[2]
Taxonomy
Only one definitive species is known, D. crandalli Jordan, 1910 from the Aptian of the Muribeca Formation (Sergipe-Alagoas Basin) and the Crato Formation, where it is an abundant fossil fish. The species D. elongatus Silvas Santos, 1947 from the Parnaíba Basin (Codó Formation) is sometimes considered its own species, but is now generally considered synonymous with D. crandalli.[3][4] Other studies have found extensive morphological variation within D. crandalli, and have suggested that it may represent a species complex.[5] Potential undescribed species are also known from the Maceió Formation of the Alagoas Basin, and at levels of the Muribeca Formation younger than the levels that D. crandalli was found in.[4]
Several other chanid taxa have previously been assigned to Dastilbe or have even been considered conspecific with D. crandalli, but are now considered distinct genera and species. The species 'D. minor' Santos, 1975 from the Aptian-aged Marizal Formation of Bahia, was assigned to Dastilbe as a nomen nudum, but was revived and reclassified into its own genus (Nanaichthys) in 2012.[6] The species D. moraesi Santos, 1955 from the Barremian/Aptian of Minas Gerais, Brazil (Areado Formation) was placed in its own genus, Francischanos, in 2022.[5] D. batai Gayet, 1989 from the Aptian/Albian of Equatorial Guinea, and the only species known outside of Brazil, was reclassified into Parachanos in 2007.[3]
Description
Dastilbe could reach a length of 25–60 millimetres (0.98–2.36 in), with a maximum length of about 150 millimetres (5.9 in). It was probably an anadromous fish, tolerant of hypersalinity and subjected to frequent mass mortality. Larger individuals of this predatory fish fed on small fishes and probably they were also cannibalistic.[7]
See also
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References
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- ^ Page Module:Citation/CS1/styles.css has no content."The Paleobiology Database". Archived from the original on 2022-03-25. Retrieved 2021-12-17.
- ^ Page Module:Citation/CS1/styles.css has no content.Taverne, Emmanuel Fara, Mireille Gayet, Louis (2010), "The Fossil Record of Gonorynchiformes", Gonorynchiformes and Ostariophysan Relationships, CRC Press, pp. 173–226, doi:10.1201/b10194-6, ISBN 978-0-429-06156-1, retrieved 2024-05-09
{{citation}}: CS1 maint: multiple names: authors list (link) CS1 maint: work parameter with ISBN (link) - ^ a b Page Module:Citation/CS1/styles.css has no content.Dietze, Kathrin (2007-03-12). "Redescription of Dastilbe crandalli (Chanidae, Euteleostei) from the Early Cretaceous Crato Formation of north-eastern Brazil". Journal of Vertebrate Paleontology. 27 (1): 8–16. doi:10.1671/0272-4634(2007)27[8:RODCCE]2.0.CO;2. ISSN 0272-4634.
- ^ a b Page Module:Citation/CS1/styles.css has no content.Taverne, Emmanuel Fara, Mireille Gayet, Louis (2010), "The Fossil Record of Gonorynchiformes", Gonorynchiformes and Ostariophysan Relationships, CRC Press, pp. 173–226, doi:10.1201/b10194-6, ISBN 978-0-429-06156-1, retrieved 2024-05-09
{{citation}}: CS1 maint: multiple names: authors list (link) CS1 maint: work parameter with ISBN (link) - ^ a b Page Module:Citation/CS1/styles.css has no content.Ribeiro, Alexandre C.; Bockmann, Flávio A.; Poyato-Ariza, Francisco J. (2022-07-01). "Francischanos, a replacement genus for Dastilbe moraesi Silva-Santos, 1955, from the Quiricó Formation, Lower Cretaceous of the Sanfranciscana basin, Brazil (Ostariophysi: Gonorynchiformes)". Cretaceous Research. 135 105212. Bibcode:2022CrRes.13505212R. doi:10.1016/j.cretres.2022.105212. ISSN 0195-6671.
- ^ Page Module:Citation/CS1/styles.css has no content.Amaral, Cesar R. L.; Brito, Paulo M. (2012-05-21). "A New Chanidae (Ostariophysii: Gonorynchiformes) from the Cretaceous of Brazil with Affinities to Laurasian Gonorynchiforms from Spain". PLOS ONE. 7 (5) e37247. Bibcode:2012PLoSO...737247A. doi:10.1371/journal.pone.0037247. ISSN 1932-6203. PMC 3357423. PMID 22629376.
- ^ Davis, Samuel P. and David M. Martill - The gonorynchiform fish Dastilbe from the Lower Cretaceous of Brazil
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