| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Ischnacanthida
Taxonomy
Ischnacanthida was named by Berg (1940). It is not extant.
It was assigned to Acanthodii by Denison (1979); and to Acanthodii by Janvier and Riglos (1986) and Sepkoski (2002).
It was assigned to Acanthodii by Denison (1979); and to Acanthodii by Janvier and Riglos (1986) and Sepkoski (2002).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1940 | Ischnacanthida Berg |
| 1979 | Ischnacanthida Denison |
| 1986 | Ischnacanthida Janvier and Riglos |
| 2002 | Ischnacanthida Sepkoski |
Is something missing? Join the Paleobiology Database and enter the data
|
|
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
Diagnosis
No diagnoses are available
Measurements
No measurements are available
|
|
||||
|
|
||||
|
|||||
|
|
||||
| Source: o = order, c = class, subp = subphylum | |||||
| References: Whittington et al. 1997, Carroll 1988, Aberhan et al. 2004 | |||||
Age range: base of the Ludfordian to the top of the Middle Famennian or 425.60000 to 364.70000 Ma
Collections (8 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Ludlow | China (Yunnan) | Poracanthodes qujingensis (27796) | |
| Ludfordian | China (Junnan) | Poracanthodes qujingensis (182558) | |
| Ohesaare | Estonia (Saare) | Poracanthodes punctatus (193837) | |
| Early/Lower Devonian | Bolivia | Ischnacanthida indet. (25592) | |
| Early/Lower Frasnian | Russian Federation | Atopacanthus sp. (90343) | |
| Late/Upper Givetian - Early/Lower Frasnian | Germany (North Rhine-Westphalia) | Atopacanthus sp. (226077 226078) | |
| Middle Famennian | Russian Federation (Oryol Oblast) | Ischnacanthida indet. (226045) |