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Dapalis

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Extinct genus of fishes

Dapalis
Temporal range: Middle Eocene to Early Miocene PreꞒ Ꞓ O S D C P T J K Pg N
Specimen of D. macrurus from France
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Family: Ambassidae
Genus: †Dapalis
Gistl, 1848
Type species
†Perca minuta
de Blainville, 1818
Species

See text

Synonyms

Dapalis is an extinct genus of prehistoric glassfish known from the Middle Eocene to the Early Miocene. It is known from both freshwater and estuarine habitats of much of mainland Europe.

It is one of the oldest glassfishes known in the fossil record, and is thought to be a stem group member of the Ambassidae as it appears to predate the most recent common ancestor of modern glassfish, which likely evolved in the early Cenozoic in freshwater habitats of Australia. Fossils are abundant throughout Europe, especially during the late Paleogene and early Neogene, in the form of both body fossils and otoliths.

Distribution

Specimen of D. macrurus

Dapalis was a common fish in estuarine and freshwater habitats of Europe from the mid-Paleogene to the early Neogene. When early marine ambassids first arrived to Europe in the Eocene, it would have been an island archipelago with the few freshwater habitats being restricted to these islands. Dapalis, as with several other early freshwater fish from Cenozoic Europe, descends from marine ancestors that colonized estuarine and eventually freshwater habitats.

Dapalis is the second most common fossil fish of the Aix-en-Provence lagerstatte in France, where large numbers of articulated specimens are known. A specific site dating to the latest Oligocene has extremely abundant fossils of an indeterminate Dapalis species that replaces the D. minutus of slightly earlier sites in the same region. A roadcut near Avignon has another exposure of the Aix-en-Provence formation, with extremely abundant D. minutus and another undescribed species, to the extent that a nearby blind alley is nicknamed the "Impasse des Dapalis".

A highly speciose assemblage of freshwater Dapalis is known from the Early Oligocene of Serbia, comprising at least 5 species known from articulated specimens with in-situ otoliths. This marks the most diverse assemblage of freshwater Dapalis and the most diverse fossil assemblage of Dapalis containing both otoliths and articulated skeletons. This group appears to have inhabited an isolated freshwater habitat and is highly morphologically distinct from other European Dapalis species, suggesting that they were either highly adapted to this environment or represented a unique lineage of Dapalis that arrived to Europe independently of other lineages.

Some fossil otoliths of Dapalis are abundant enough to be regional index fossils, with Dapalis formosus, an abundant species of the western Paratethys Sea, indicating the regional Ottnangian stage of the Miocene for example.

Species

Specimen of D. minutus

The following species are known from both body fossils & otoliths. Many were initially classified in the preoccupied genus Smerdis, which was described based on an unrelated centropomid but included the earlier-described species D. minutus as the type species. Other species once classified in Smerdis likely do not belong to this genus.

Primarily based on Ahnelt & Bradić-Milinović (2024):

  • D. absconditus Ahnelt & Bradić-Milinović, 2024 - Early Oligocene of Serbia
  • D. angustus Reichenbacher [de] & Weidmann 1992 - Early Oligocene of France, Switzerland & Romania
  • D. borkensis (Weiler, 1961) - Early Oligocene of Germany
  • D. carinatus Stinton & Kissling 1968 - Late Oligocene/Early Miocene (Chattian/Aquitanian) of France & Germany
  • D. crassirostris (Rzehak, 1893) - Burdigalian of Germany
  • D. curvirostris (Rzehak 1893) - Burdigalian of Germany & the Czech Republic
  • D. formosus (von Meyer, 1848) - early Miocene of Switzerland, Germany, and possibly the Czech Republic
  • D. hungaricus (Schubert, 1912) - Middle Eocene (Lutetian) of Hungary
  • D. kaelini Reichenbacher, 1993 - Early Miocene of Germany
  • D. kuehni (Weinfurther, 1967) - Middle Miocene of Austria
  • D. macrurus (Agassiz ex Oken 1835) - late Oligocene of France (Campagne-Calavon Formation) & Bulgaria
  • D. minutus (de Blainville, 1818) (type species) - late Oligocene of France (Aix-en-Provence Formation) (type species)
  • D. octospinus Ahnelt & Bradić-Milinović, 2024 - Early Oligocene of Serbia
  • D. pauciserratus Ahnelt, Bradić-Milinović & Schwarzhans [uk], 2024 - early Oligocene of Serbia
  • D. parvus Ahnelt & Bradić-Milinović, 2024 - Early Oligocene of Serbia
  • D. praecursor Gaudant, 2007 - Lutetian of France (Lutetian limestone)
  • D. quintus Ahnelt & Bradić-Milinović, 2024 - Early Oligocene of Serbia
  • D. rhenanus (Koken, 1891) - early Miocene of Germany
  • D. rhomboidalis Stinton & Kissling 1968 - middle Oligocene of Germany
  • D. transylvanicus Reichenbacher & Codrea, 1999 - Early Oligocene of Romania
  • D. ventricosus Nolf & Reichenbacher, 1999 - Middle Eocene (Lutetian/Bartonian) of Italy

The following species were originally classified in this genus but are not incorporated in later studies:

The former otolith-based species D. bhatiai and D. buffetauti from the Maastrichtian of India are now synonymized with one another and are thought to belong to the genus Anthracoperca. The species D. budensis is now placed in the percoid genus Oligoserranoides. Former species D. sandbergeri, D. rhoensis, and D. sieblosensis are now synonymized with one another and placed in the genus Dapaloides. Specimens of the former species Smerdis indica from Monte Bolca, Italy are now known to be of the percoid fish Cyclopoma. Fossil otoliths from New Zealand, placed in D. antipodus, are now tentatively placed in Ambassis.

See also

References

  1. "PBDB Taxon". Paleobiology Database. Retrieved 2024-07-29.
  2. Ghazali, Siti Zafirah; Lavoué, Sébastien; Sukmono, Tedjo; Habib, Ahasan; Tan, Min Pau; Nor, Siti Azizah Mohd (2023). "Cenozoic colonisation of the Indian Ocean region by the Australian freshwater-originating glassperch family Ambassidae (Teleostei)". Molecular Phylogenetics and Evolution. 186: 107832. Bibcode:2023MolPE.18607832G. doi:10.1016/j.ympev.2023.107832. ISSN 1055-7903. PMID 37263456.
  3. ^ Ahnelt, Harald; Bradić-Milinović, Katarina (2024). "A Unique and Species-Rich Assemblage of Freshwater Glassfishes (Teleostei: Ambassidae: Dapalis) from the lower Oligocene of the Central Paratethys with the Description of Four New Species". Taxonomy. 4 (4): 805–849. doi:10.3390/taxonomy4040044. ISSN 2673-6500.
  4. ^ Gaudant, Jean; Nel, André; Nury, Denise; Véran, Monette; Carnevale, Giorgio (2018). "The uppermost Oligocene of Aix-en-Provence (Bouches-du-Rhône, Southern France): A Cenozoic brackish subtropical Konservat-Lagerstätte, with fishes, insects and plants". Comptes Rendus Palevol (in French). 17 (7): 460–478. Bibcode:2018CRPal..17..460G. doi:10.1016/j.crpv.2017.08.002.
  5. ^ Ahnelt, Harald; Bradić-Milinović, Katarina; Schwarzhans, Werner (2024). "Dapalis pauciserratus, a new species of freshwater glassfishes (Teleostei, Ambassidae) from the Lower Oligocene of the Central Paratethys". Cybium: 1–15. doi:10.26028/cybium/2024-006.
  6. ^ Reichenbacher, Bettina (1999). "Preliminary otolith-zonation in continental Tertiary deposits of the Paratethys and adjacent areas". N. Jb. Geol. Paläont. Abh. 214 (3): 375–390. doi:10.1127/njgpa/214/1999/375.
  7. Reichenbacher, Bettina; Krijgsman, Wout; Lataster, Yannick; Pippèrr, Martina; Van Baak, Christiaan G. C.; Chang, Liao; Kälin, Daniel; Jost, Jürg; Doppler, Gerhard; Jung, Dietmar; Prieto, Jérôme; Abdul Aziz, Hayfaa; Böhme, Madelaine; Garnish, Jennifer; Kirscher, Uwe (2013). "A new magnetostratigraphic framework for the Lower Miocene (Burdigalian/Ottnangian, Karpatian) in the North Alpine Foreland Basin". Swiss Journal of Geosciences. 106 (2): 309–334. Bibcode:2013SwJG..106..309R. doi:10.1007/s00015-013-0142-8. ISSN 1661-8734.
  8. ^ Geology, British Museum (Natural History) Department of; Woodward, Arthur Smith (1901). Catalogue of the Fossil Fishes in the British Museum (Natural History): Actinopterygian Teleostomi of the suborders Isospondyli (in part), Ostariophysi, Apodes, Percesoces, Hemibranchii, Acanthopterygii, and Anacanthini. order of the Trustees.
  9. Reichenbacher, Bettina (1995). "Lower oligocène fishes (otoliths) from the Neuwied Basin (Rhenish Massif, Western Germany)". Paläontologische Zeitschrift. 69 (1): 241–255. Bibcode:1995PalZ...69..241R. doi:10.1007/BF02985988.
  10. ^ Reichenbacher, Bettina; Codrea, Vlad (1999). "Fresh- to brackish water fish faunas from continental Early Oligocene deposits in the Transylvanian Basin (Romania)". publikationen.bibliothek.kit.edu (in German). Retrieved 2024-08-02.
  11. ^ Reichenbacher, Bettina; Uhlig, Undine; Kowalke, Thorsten; Bassler, Barbara; Matzke-Karasz, Renate; Schenk, Bettina (2004). "Biota, palaeoenvironments and biostratigraphy of continental Oligocene deposits of the South German Molasse Basin (Penzberg Syncline)". Palaeontology. 47 (3): 639–677. Bibcode:2004Palgy..47..639R. doi:10.1111/j.0031-0239.2004.00375.x. ISSN 0031-0239.
  12. ^ Bohme, Madelaine; Reichenbacher, Bettina (2003). "The Karpatian-A Lower Miocene Stage of the Central Paratethys" (PDF). Teleost Fishes from the Karpatian (Lower Miocene) of the Western Paratethys. Masaryk University Brno.
  13. Kowalke, Thorsten; Reichenbacher, Bettina (2005). "Early Miocene (Ottnangian) Mollusca of the Western Paratethys—ontogenetic strategies and palaeo-environments". Geobios. 38 (5): 609–635. Bibcode:2005Geobi..38..609K. doi:10.1016/j.geobios.2004.03.006. ISSN 0016-6995.
  14. "Palaeogene Fish Otoliths from Lignite Associated Succession (Cambay Formation) Khadsaliya, Bhavnagar, Gujarat, India". Gondwana Geological Society Nagpur, India. Retrieved 2024-07-29.
  15. Massonne, Tobias; Böhme, Madelaine (2022-11-09). "Re-evaluation of the morphology and phylogeny of Diplocynodon levantinicum Huene & Nikoloff, 1963 and the stratigraphic age of the West Maritsa coal field (Upper Thrace Basin, Bulgaria)". PeerJ. 10: e14167. doi:10.7717/peerj.14167. ISSN 2167-8359. PMC 9653056. PMID 36389401.
  16. Gaudant, Jean (2007). "FIND OF THE OLDEST KNOWN DAPALIS SKELETON (TELEOSTS, PERCOIDEI) IN THE UPPER LUTETIAN OF THE PARIS BASIN" (PDF). Bulletin Inf. Géol. Bass. Paris. 44 (4): 3–8.
  17. Nolf, Dick (2003). "Fish otoliths from the Santonian of the Pyrenean faunal province, and an overview of all otolith- documented North Atlantic Late Cretaceous teleosts". Bulletin de l'Institut Royal des Sciences Naturelles de Belgique - Bulletin van het Koninklijk Belgisch Instituut voor Natuurwetenschappen. 73: 155–173.
  18. ^ Nolf, Dirk; Rana, R. S.; Prasad, G. V. R. (2008). "Late Cretaceous (Maastrichtian fish otoliths from the Deccan Intertrappean Beds, India: a revision". Bulletin de l'Institut royal des Sciences naturelles de Belgique, Sciences de la Terre. 78: 239–259.
  19. Bieńkowska-Wasiluk, M.; Pałdyna, M. (2018). "Taxonomic revision of the Oligocene percoid fish Oligoserranoides budensis (Heckel, 1856), from the Paratethys and paleobiogeographic comments". Geologica Acta. 16 (1): 75–92.
  20. Reichenbacher, Bettina (1995). "Lower oligocène fishes (otoliths) from the Neuwied Basin (Rhenish Massif, Western Germany)". Paläontologische Zeitschrift. 69 (1): 241–255. Bibcode:1995PalZ...69..241R. doi:10.1007/BF02985988.
Taxon identifiers
Dapalis


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