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Xenacanthida
Taxonomy
Xenacanthida was named by Glikmann (1964). It is not extant.
It was assigned to Elasmobranchii by Zangerl (1981) and Heidtke (1998).
It was assigned to Elasmobranchii by Zangerl (1981) and Heidtke (1998).
Subtaxa
Synonymy list
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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.
Or. †Xenacanthida Glikmann 1964
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G. †Anodontacanthus Davis 1881
Fm. †Orthacanthidae Heyler and Poplin 1989
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G. †Orthacanthus Agassiz 1843
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†Orthacanthus buxieri Heyler and Poplin 1989
†Orthacanthus compressus Newberry 1856
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Invalid names: Diplodus latus Newberry 1856 [synonym], Diplodus penetrans Dawson 1868 [synonym]
†Orthacanthus donnelljohnsi Johnson and Thayer 2009
†Orthacanthus gibbosus Agassiz 1843
†Orthacanthus gracilis Giebel 1848
†Orthacanthus milleri Agassiz 1843
†Orthacanthus minor Agassiz 1843
†Orthacanthus platypternus Cope 1884
†Orthacanthus pustulosus Agassiz 1843
†Orthacanthus texensis Cope 1888
Invalid names: Chilodus Giebel 1847 [synonym], Didymodus Cope 1883 [synonym], Diplodus Agassiz 1843 [synonym], Dittodus Owen 1867 [synonym], Giebelodus Whitley 1940 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: c = class, subp = subphylum | |||||
| References: Wagner 2023, Carroll 1988 | |||||
Age range: base of the Emsian to the top of the Late/Upper Cretaceous or 407.60000 to 66.00000 Ma
Collections (39 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Emsian | Canada (New Brunswick) | Doliodus problematicus (232474) | |
| Emsian | Canada (New Brunswick) | Diplodus problematicus (197260) | |
| Bashkirian | USA (Arizona) | Orthacanthus sp., Orthacanthus donnelljohnsi (131603) | |
| Pennsylvanian | United Kingdom | Diplodus tenuis (137307) | |
| Westphalian A | United Kingdom (Flintshire) | Diplodus sp. (233397) | |
| Middle Pennsylvanian | USA (West Virginia) | Orthacanthus sp. (125143) | |
| Moscovian | United Kingdom | Diplodus gibbosus (137309 137313 137314) Diplodus gibbosus, Diplodus tenuis (137310) Diplodus tenuis (137304 137308) | |
| Kasimovian - Moscovian | United Kingdom | Diplodus gibbosus, Diplodus tenuis (137315) | |
| Kasimovian | USA (Illinois) | Orthacanthus compressus (224241) | |
| Kasimovian | USA (Nebraska) | Diplodus compressus (132676) | |
| Kasimovian | USA (New Mexico) | Orthacanthus sp. (217022) | |
| Kasimovian - Kungurian | USA (Utah) | Orthacanthus texensis (218159) | |
| Virgilian | USA (Kansas) | Orthacanthus sp. (215555) | |
| Virgilian | USA (New Mexico) | Orthacanthus huberi (216993 217070) | |
| Asselian - Sakmarian | France | Orthacanthus buxieri (34797) | |
| Asselian - Sakmarian | USA (Texas) | Orthacanthus texensis (11165) | |
| Wolfcampian | USA (Texas) | Orthacanthus texensis (22635) | |
| Cisuralian | USA (Texas) | Didymodus platypternus, Didymodus compressus (132969) | |
| Permian | USA (Oklahoma) | Orthacanthus platypernus, Orthacanthus texensis (221388) Orthacanthus sp., Orthacanthus texensis, Orthacanthus platypternus (221391 221392) Orthacanthus texensis (221390) | |
| Permian | USA (Pennsylvania) | Orthacanthus texensis, Orthacanthus platypternus, Orthacanthus compressus (125957) | |
| Sakmarian | USA (Kansas) | Orthacanthus sp. (130810 130811 130823 130827) | |
| Artinskian | USA (Oklahoma) | Orthacanthus sp. (67862) Orthacanthus texensis, Orthacanthus platypternus (220872) | |
| Leonardian | USA (Oklahoma) | Pleuracanthus compressus (87054) | |
| Bithynian | Poland | Orthacanthus sp. (149688) | |
| Late/Upper Kimmeridgian | France (Aquitaine) | Orthacanthus macer (94532) | |
| Late/Upper Cretaceous | Japan (Fukushima) | Orthacanthus sp. (72267) |