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Daxatina
Taxonomy
Daxatina was named by Strand (1929) [Sepkoski's age data: Tr Ladi-u Sepkoski's reference number: 302]. Its type is Trachyceras canadense.
It was assigned to Trachyceratidae by Tozer (1981); to Trachyceratinae by Tozer (1994); to Ceratitida by Sepkoski (2002); and to Anolcitinae by Mietto and Manfrin (2008).
It was assigned to Trachyceratidae by Tozer (1981); to Trachyceratinae by Tozer (1994); to Ceratitida by Sepkoski (2002); and to Anolcitinae by Mietto and Manfrin (2008).
Species
Synonyms
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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.
G. †Daxatina Strand 1929
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†Daxatina canadensis Whiteaves 1889
†Daxatina laubei Tozer 1994
†Daxatina limpida Tozer 1994
†Daxatina megabrotheus Tozer 1994
Invalid names: Dawsonites Boehm 1903 [replaced]
Diagnosis
No diagnoses are available
Measurements
part | N | mean | minimum | maximum | median | s.d. | |
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shell height | 14 | 23.7 | 16.1 | 34.1 | 21.7 | 7.35 | |
shell diameter | 14 | 41.2 | 18.6 | 73.8 | 47.2 | 19.6 | |
shell inflation | 14 | 10.5 | 5.00 | 15.0 | 12.9 | 3.86 |
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Source: o = order, c = class | |||||
References: Kiessling 2003, Kiessling 2004 |
Collections (54 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Ladinian | Canada (British Columbia) | D. canadensis (44147 44155) | |
Ladinian | Svalbard and Jan Mayen | Dawsonites canadaensis, Dawsonites sp. (212215) Dawsonites canadensis (212204) Dawsonites sp., Dawsonites canadensis (212201) | |
Julian | Italy | D. canadensis (50866 142046) D. laubei (141967 141968 141976 142035 142050) D. sp. (50840 50841 50847 50850 50851 50865 141965 142036 142041 142042) D. sp., D. canadensis, D. laubei (142066) Trachyceras bipunctatum (50844 50873) | |
Julian | Canada (British Columbia) | D. canadensis (137095 137381 138610 138611 138612 138628 138634 139045 141635) D. laubei (138631) D. limpida (49715 56877) D. megabrotheus (44150 141652) Trachyceras canadense (141772) | |
Julian | USA (Nevada) | D. sp. (186864 186865 186870 186871 186873 186874 186875 186876 186877) | |
Julian | Spain | D. canadensis (211538) | |
Carnian | Canada (British Columbia) | D. limpida (49716) | |
Carnian | Italy | D. sp., D. canadensis (50837) | |
Carnian | Svalbard and Jan Mayen | Dawsonites canadensis (44452) | |
Late/Upper Triassic | USA (Alaska) | Trachyceras canadense (112261) |