Dapalis Explained

Dapalis is an extinct genus of prehistoric glassfish known from the Late Cretaceous to the Early Miocene. It is known from both freshwater and marine habitats of India, Australia, New Zealand, and much of mainland Europe.[1]

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.[2] Fossils are abundant throughout Europe, especially during the late Paleogene and early Neogene, in the form of both body fossils and otoliths.

Species

The following species are known from both body fossils & otoliths. Most were initially classified in the preoccupied genus Smerdis:

Indeterminate otoliths are known from the Late Paleocene of Australia.

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.[16] Former species D. sandbergeri, D. rhoensis, and D. sieblosensis are now synonymized with one another and placed in the genus Dapaloides.[17] Specimens of the former species Smerdis indica from Monte Bolca, Italy are now known to be of the percoid fish Cyclopoma.

Distribution

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”.

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.[18]

See also

References

Notes and References

  1. Web site: PBDB Taxon . 2024-07-29 . paleobiodb.org.
  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 . 10.1016/j.ympev.2023.107832 . 37263456 . 2023MolPE.18607832G . 1055-7903.
  3. Book: Geology . British Museum (Natural History) Department of . 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 . Woodward . Arthur Smith . 1901 . order of the Trustees . en.
  4. 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. 10.1127/njgpa/214/1999/375 .
  5. Reichenbacher . Bettina . 1995 . Lower oligocène fishes (otoliths) from the Neuwied Basin (Rhenish Massif, Western Germany) . Paläontologische Zeitschrift . en . 69 . 1 . 241–255 . 10.1007/BF02985988 . 1995PalZ...69..241R .
  6. Web site: Reichenbacher . Bettina . Codrea . Vlad . 1999 . Fresh- to brackish water fish faunas from continental Early Oligocene deposits in the Transylvanian Basin (Romania) . 2024-08-02 . publikationen.bibliothek.kit.edu . de.
  7. 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 . en . 47 . 3 . 639–677 . 10.1111/j.0031-0239.2004.00375.x . 2004Palgy..47..639R . 0031-0239.
  8. Bohme . Madelaine . The Karpatian-A Lower Miocene Stage of the Central Paratethys . Reichenbacher . Bettina . 2003 . Teleost Fishes from the Karpatian (Lower Miocene) of the Western Paratethys . Masaryk University Brno .
  9. Kowalke . Thorsten . Reichenbacher . Bettina . 2005 . Early Miocene (Ottnangian) Mollusca of the Western Paratethys—ontogenetic strategies and palaeo-environments . Geobios . 38 . 5 . 609–635 . 10.1016/j.geobios.2004.03.006 . 2005Geobi..38..609K . 0016-6995.
  10. Web site: Palaeogene Fish Otoliths from Lignite Associated Succession (Cambay Formation) Khadsaliya, Bhavnagar, Gujarat, India . 2024-07-29 . Gondwana Geological Society Nagpur, India . en-US.
  11. 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.
  12. 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.
  13. 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 . en . 10 . e14167 . 10.7717/peerj.14167 . free . 36389401 . 9653056 . 2167-8359.
  14. 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 . fr . 17 . 7 . 460–478 . 2018CRPal..17..460G . 10.1016/j.crpv.2017.08.002.
  15. 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 . 10.26028/cybium/2024-006.
  16. 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 . en . 16 . 1 . 75–92.
  17. Reichenbacher . Bettina . 1995 . Lower oligocène fishes (otoliths) from the Neuwied Basin (Rhenish Massif, Western Germany) . Paläontologische Zeitschrift . en . 69 . 1 . 241–255 . 10.1007/BF02985988 . 1995PalZ...69..241R .
  18. 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 . en . 106 . 2 . 309–334 . 10.1007/s00015-013-0142-8 . 1661-8734.

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