Dapediidae Temporal range:
| |
---|---|
Fossil specimen of Dapedium politum | |
Artist's reconstruction of Sargodon | |
Scientific classification | |
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). [1] 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. [2]
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. [3] Their teeth were adapted towards a durophagous diet; some dapediids fed on hard-shelled invertebrates, [4] while at least one genus ( Hemicalypterus) may have been herbivorous. [5]
Dapediids are usually considered to be either basal ginglymodians [2] [5] or stem group representatives of the wider clade Holostei, [3] [6] but some studies have found them to be early-diverging stem- teleosts instead. [3]
Dapediidae Temporal range:
| |
---|---|
Fossil specimen of Dapedium politum | |
Artist's reconstruction of Sargodon | |
Scientific classification | |
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). [1] 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. [2]
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. [3] Their teeth were adapted towards a durophagous diet; some dapediids fed on hard-shelled invertebrates, [4] while at least one genus ( Hemicalypterus) may have been herbivorous. [5]
Dapediids are usually considered to be either basal ginglymodians [2] [5] or stem group representatives of the wider clade Holostei, [3] [6] but some studies have found them to be early-diverging stem- teleosts instead. [3]