Dapediidae
| Dapediidae Temporal range:
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| Fossil specimen of Dapedium politum | |
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| Artist's reconstruction of Sargodon | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Infraclass: | Holostei (?) |
| Order: | †Dapediiformes Thies & Waschkewitz, 2016 |
| Family: | †Dapediidae Lehman, 1966 |
| Genera | |
Dapediidae is an extinct family of neopterygian ray-finned fish that lived from the Middle Triassic to Late Jurassic (Ladinian to Tithonian).[2] It is the only family of the order Dapediiformes. Its members were historically placed within the ginglymodian family Semionotidae, but were moved to their own family in 1966.[3]
Description
[edit]Dapediids had deep, laterally flattened circular bodies covered in thick ganoid scales, which gave them a resemblance to the pycnodontiforms, a group they may or may not be related to.[4] Their teeth were adapted towards a durophagous diet; some dapediids fed on hard-shelled invertebrates,[5] while at least one genus (Hemicalypterus) may have been herbivorous.[6]
Classification
[edit]Dapediids are usually considered to be either basal ginglymodians[3][6] or stem group representatives of the wider clade Holostei,[4][7] but some studies have found them to be early-diverging stem-teleosts instead.[4]
References
[edit]- ^ Gouiric-Cavalli, Soledad; Iglesias, Ari; Cariglino, Bárbara; Reguero, Marcelo A. (2024). "A Late Jurassic deep-bodied actinopterygian fish from Antarctica". Acta Palaeontologica Polonica. 69 (3): 467–483. doi:10.4202/app.01158.2024.
- ^ Cawley, John J.; Marramà, Giuseppe; Carnevale, Giorgio; Villafaña, Jaime A.; López‐Romero, Faviel A.; Kriwet, Jürgen (February 2021). "Rise and fall of †Pycnodontiformes: Diversity, competition and extinction of a successful fish clade". Ecology and Evolution. 11 (4): 1769–1796. doi:10.1002/ece3.7168. ISSN 2045-7758. PMC 7882952. PMID 33614003.
- ^ a b Thies, D.; Waschkewitz, J. (2016). "Redescription of Dapedium pholidotum (Agassiz, 1832) (Actinopterygii, Neopterygii) from the Lower Jurassic Posidonia Shale, with comments on the phylogenetic position of Dapedium Leach, 1822". Journal of Systematic Palaeontology. 14 (4): 339–364. doi:10.1080/14772019.2015.1043361. S2CID 130282395.
- ^ a b c Latimer, A. E.; Giles, S. (2018). "A giant dapediid from the Late Triassic of Switzerland and insights into neopterygian phylogeny". Royal Society Open Science. 5 (8): 180497. Bibcode:2018RSOS....580497L. doi:10.1098/rsos.180497. PMC 6124034. PMID 30225040.
- ^ Smithwick, F. M. (2015). "Feeding ecology of the deep-bodied fish Dapedium (Actinopterygii, Neopterygii) from the Sinemurian of Dorset, England". Palaeontology. 58 (2): 293–311. Bibcode:2015Palgy..58..293S. doi:10.1111/pala.12145. S2CID 86168055.
- ^ a b Gibson, S. Z. (2016). "Redescription and Phylogenetic Placement of †Hemicalypterus weiri Schaeffer, 1967 (Actinopterygii, Neopterygii) from the Triassic Chinle Formation, Southwestern United States: New Insights into Morphology, Ecological Niche, and Phylogeny". PLOS ONE. 11 (9): e0163657. Bibcode:2016PLoSO..1163657G. doi:10.1371/journal.pone.0163657. PMC 5033578. PMID 27657923.
- ^ López-Arbarello, A.; Sferco, E. (2018). "Neopterygian phylogeny: the merger assay". Royal Society Open Science. 5 (3): 172337. Bibcode:2018RSOS....572337L. doi:10.1098/rsos.172337. PMC 5882744. PMID 29657820.
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