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 Europe (Spain, France, and Germany).[1]
| Dapalis Temporal range:
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|---|---|
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| Dapalis macrurus from Provence (France) | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Family: | Ambassidae |
| Genus: | †Dapalis Gistl, 1848 |
| Species | |
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See text | |
| Synonyms | |
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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] Although body fossils are abundant in some sites in Europe, a majority of species throughout the stratigraphic range of the genus are known only from fossilized otoliths.
Species
editThe following species are known, the majority from otoliths:
- D. angustus Reichenbacher & Weidmann 1992 - Early Oligocene of France, Switzerland & Romania
- D. antipodus Schwarzhans 1980 - early-middle Eocene (Ypresian/Lutetian) of New Zealand
- D. bartensteini Malz 1978 - Early Miocene (Aquitanian) of Germany
- D. cappadocensi Menzel & Becker-Platen 1981 - Early Miocene (Aquitanian/Burdigalian) of Turkey
- D. carinatus Stinton & Kissling 1968 - Late Oligocene/Early Miocene (Chattian/Aquitanian) of France
- D. crassirostris (Rzehak, 1893) - Burdigalian of Germany
- D. curvirostris (Rzehak 1893) - Burdigalian of Germany & the Czech Republic[3][4]
- D. distortus Nolf, 2003 - Late Cretaceous (Santonian) of Spain[5]
- D. erici Nolf, Rana & Prasad, 2008 - Late Cretaceous (Maastrichtian) of India[6]
- D. formosus (von Meyer, 1848) - early Miocene of the Czech Republic, Switzerland and Germany
- D. macrurus (Agassiz ex Oken 1835) - late Oligocene of Aix-en-Provence, France & Bulgaria[7]
- D. minutus (de Blainville, 1818) - late Oligocene of Aix-en-Provence, France[8]
- D. pauciserratus Ahnelt, Bradić-Milinović & Schwarzhans, 2024 - early Oligocene of Serbia[9]
- D. rhenanus (Koken, 1891) - early Miocene of Germany
- D. transylvanicus Reichenbacher & Codrea, 1999 - Early Oligocene of Romania
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.[6]
Distribution
editOnly a few species (D. macrurus, D. minutus, and D. pauciserratus) are known from articulated body fossils instead of just otoliths. 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. minor and another undescribed species, to the extent that a nearby blind alley is nicknamed the “Impasse des Dapalis”.[8][9]
Body fossils of species of this genus have been found in the Miocene of Germany and in the Oligocene of Serbia and France, but otoliths are far more abundant and represent a wider variety of species. Some fossil otoliths are abundant enough to be regional index fossils, with Dapalis formosus, an abundant species of the westernParatethys Sea, indicating the regional Ottnangian stage of the Miocene for example.[10]
See also
edit
References
edit- ^ "PBDB Taxon". paleobiodb.org. Retrieved 2024-07-29.
- ^ 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.
- ^ 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.
- ^ "Palaeogene Fish Otoliths from Lignite Associated Succession (Cambay Formation) Khadsaliya, Bhavnagar, Gujarat, India". Gondwana Geological Society Nagpur, India. Retrieved 2024-07-29.
- ^ 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.
- ^ a b 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.
- ^ 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.
- ^ a b 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.
- ^ a b 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.
- ^ 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. doi:10.1007/s00015-013-0142-8. ISSN 1661-8734.
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