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Xenoschrammenum
Taxonomy
Xenoschrammenum was named by de Laubenfels (1955) [Sepkoski's age data: J Oxfo-l - K Apti Sepkoski Ref. 622,775]. It is not extant.
It was assigned to Hexactinosa by Sepkoski (2002); and to Sporadopylidae by Finks et al. (2004).
It was assigned to Hexactinosa by Sepkoski (2002); and to Sporadopylidae by Finks et al. (2004).
Species
Synonyms
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Synonymy list
Year | Name and author |
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1937 | Amphiblestrum Schrammen |
1955 | Xenoschrammenum de Laubenfels p. 79 |
2002 | Xenoschrammenus Sepkoski |
2004 | Xenoschrammenum Finks et al. p. 547 |
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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.
G. †Xenoschrammenum de Laubenfels 1955
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†Xenoschrammenum alternans Schrammen 1937
†Xenoschrammenum fragile Lagneau-Herenger 1962
†Xenoschrammenum regulare Lagneau-Herenger 1962
†Xenoschrammenum robustum Lagneau-Herenger 1962
†Xenoschrammenum venosum Schrammen 1937
Invalid names: Amphiblestrum Schrammen 1937 [replaced]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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Source: o = order, c = class | |||||
References: Kiessling 2004, Bambach et al. 2007 |
Age range: base of the Early/Lower Oxfordian to the top of the Late/Upper Albian or 161.20000 to 99.60000 Ma
Collections (27 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Oxfordian | Spain | Amphiblestrum sp. (67866 67867) | |
Early/Lower Oxfordian | Poland | X. alternans (114497) | |
Late/Upper Oxfordian | Poland | X. alternans (60852 60854 60856) X. punctatum, X. alternans (60851 60855) | |
Late/Upper Oxfordian | Germany | X. alternans (74047) | |
Middle Oxfordian | Poland | X. alternans (60850) X. punctatum (60809 60817) X. punctatum, X. alternans (60812 114252) | |
Middle Oxfordian - Late/Upper Oxfordian | Germany | X. venosum (74033) | |
Late/Upper Kimmeridgian | Germany | X. alternans (74099) X. venosum (74069) | |
Early/Lower Tithonian | Germany | Tremaphorus alternans (34608) | |
Early/Lower Valanginian | France (Provence-Alpes-Cote d'Azur) | X. regulare (111687) | |
Hauterivian | France (Rhone-Alpes) | X. robustum (112151) X. robustum, X. fragile (112150) | |
Aptian | Spain (Catalonia) | X. fragile (111533) | |
Early/Lower Albian | France (Provence-Alpes-Cote d'Azur) | X. regulare, X. fragile (112209) | |
Middle Albian | France (Provence-Alpes-Cote d'Azur) | X. regulare (112212) | |
Late/Upper Albian | France (Provence-Alpes-Cote d'Azur) | X. fragile (112215 112216) | |
Late/Upper Albian | France (Languedoc-Rousillon) | X. fragile (112213) |