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Psarodictyum
Taxonomy
Psarodictyum was named by Raymond and Okulitch (1940) [Sepkoski's age data: O Llde-u S Ludl-l Sepkoski's reference number: 880]. Its type is Psarodictyum magnificum.
It was assigned to Lithistida by Sepkoski (2002); and to Anthaspidellidae by Rigby and Desrochers (1995) and Finks et al. (2004).
It was assigned to Lithistida by Sepkoski (2002); and to Anthaspidellidae by Rigby and Desrochers (1995) and Finks et al. (2004).
Species
Synonymy list
Year | Name and author |
---|---|
1940 | Psarodictyum Raymond and Okulitch |
1995 | Psarodictyum Rigby and Desrochers |
2002 | Psarodictyon Sepkoski |
2004 | Psarodictyum Finks et al. p. 89 |
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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. †Psarodictyum Raymond and Okulitch 1940
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†Psarodictyum attenuatum Rigby and Chatterton 1989
†Psarodictyum crassum Rigby and Webby 1988
†Psarodictyum magna Beresi and Rigby 1993
†Psarodictyum magnificum Raymond and Okulitch 1940
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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Source: o = order, c = class | |||||
References: Whittington et al. 1997, Kiessling 2004 |
Age range: base of the Early/Lower Llanvirn to the top of the Ludlow or 468.00000 to 423.00000 Ma
Collections (11 total)
Time interval | Ma | Country or state | Original ID and collection number |
---|---|---|---|
Chazyan | Canada (Quebec) | P. magnificum (66132 66133 66134 66135) | |
Early/Lower Llanvirn | Argentina | P. sp. (8747 8748) | |
Llanvirn | Argentina (San Juan) | P. sp., P. magna (90430) | |
Llanvirn | Argentina | P. sp. (90432) | |
Eastonian | Australia (New South Wales) | P. crassum (119501) | |
Wenlock | Canada (Nunavut) | P. attenuatum (119782) | |
Ludlow | Canada (Nunavut) | P. attenuatum (119778) |