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Xenacanthus
Taxonomy
Xenacanthus was named by Beyrich (1848). It is not extant.
It was synonymized subjectively with Pleuracanthus by Hay (1902).
It was assigned to Elasmobranchii by Irmis (2005); and to Xenacanthidae by Jordan (1963), Daly (1973), Zangerl (1981), Murry (1989), Hampe (2003), Heckert (2004) and Ginter et al. (2010).
It was synonymized subjectively with Pleuracanthus by Hay (1902).
It was assigned to Elasmobranchii by Irmis (2005); and to Xenacanthidae by Jordan (1963), Daly (1973), Zangerl (1981), Murry (1989), Hampe (2003), Heckert (2004) and Ginter et al. (2010).
Species
Species lacking formal opinion data
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.
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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Source: o = order, subp = subphylum | |||||
References: Hendy et al. 2009, Carroll 1988, Wagner 2023 |
Age range: base of the Kasimovian to the top of the Norian or 307.00000 to 208.50000 Ma
Collections (44 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Desmoinesian | USA (Oklahoma) | X. sp. (223893) | |
Kasimovian | USA (Illinois) | X. ossiani (224241) | |
Gzhelian - Sakmarian | USA (New Mexico) | X. sp. (180989) | |
Asselian | Czech Republic | X. sp. (218107) | |
Asselian - Sakmarian | Czech Republic | X. sp. (51265) | |
Wolfcamp - Sakmarian | USA (Utah) | X. texensis (13256) | |
Wolfcamp | USA (New Mexico) | X. sp. (180106 180383 180384 180940 180974) | |
Artinskian | USA (Oklahoma) | X. luederensis (220872) X. sp. (79402) | |
Artinskian | USA (Texas) | X. sp. (22714) | |
Artinskian - Kungurian | USA (Texas) | X. platypternus (85301) X. texensis, X. platypternus (85299 85300) | |
Artinskian - Roadian | USA (Texas) | Pleuracanthus indet. (180992) | |
Leonard | USA (Oklahoma) | X. sp. (79815 84941 85567 180990 180991) | |
Leonard | USA (Texas) | X. platypternus (177018) | |
Kungurian | USA (Texas) | X. platypternus (67735 85556) X. sp. (12976 27704 85551 85552 85553 85554 85555 177000 177003 177015) | |
Kungurian | USA (Oklahoma) | X. sp. (67945) | |
Kungurian - Roadian | USA (Texas) | X. sp. (79694) | |
Kazanian | Brazil (Rio Grande do Sul) | X. sp. (232544) | |
Roadian - Wordian | USA (Oklahoma) | X. sp. (27480 27573) | |
Carnian - Norian | India (Telangana) | X. indicus (101863) | |
Norian | USA (New Mexico) | X. sp. (55248) | |
Norian | USA (Texas) | X. sp. (13266) |