Geological Range: Last occurrence (top): at top of (100% up, 0Ma, in "Holocene" stage). Data source: Total of ranges of the species in this database First occurrence (base): within (-Ma, base in "Holocene" stage). Data source: Total of ranges of species in this database
Plot of occurrence data:
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References:
Eisenack, A. (1958). Tasmanites Newton 1875 und Leiosphaeridia n.g. als Gattungen der Hystrichosphaeridea. Palaeontographica Abteilung A Palaeozoologie Stratigraphie. 110: 1–19-. gs
Acritax - Acritax_Camb - Leiosphaeridiaby: Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 14-9-2024