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Hemiphragma
Taxonomy
Hemiphragma was named by Ulrich (1893). Its type is Batostoma irrasum.
It was assigned to Trematoporidae by Bassler (1911) and Bassler (1953); to Dittoporidae by Pushkin and Popov (1999); and to Trepostomida by Sepkoski (2002).
It was assigned to Trematoporidae by Bassler (1911) and Bassler (1953); to Dittoporidae by Pushkin and Popov (1999); and to Trepostomida by Sepkoski (2002).
Species
Species lacking formal opinion data
Synonymy list
Year | Name and author |
---|---|
1893 | Hemiphragma Ulrich |
1911 | Hemiphragma Bassler |
1953 | Hemiphragma Bassler p. G114 |
1999 | Hemiphragma Pushkin and Popov |
2002 | Hemiphragma Sepkoski |
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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. †Hemiphragma Ulrich 1893
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†Hemiphragma batheri Bassler 1911
†Hemiphragma glabrum Bassler 1911
†Hemiphragma irrasum Ulrich 1893
†Hemiphragma maculatum Bassler 1911
†Hemiphragma panderi Dybowski 1877
†Hemiphragma priscum Pushkin 1999
†Hemiphragma pygmaeum Bassler 1911
†Hemiphragma rotundatum Bassler 1911
†Hemiphragma subsphericum Bassler 1911
†Hemiphragma tenuimurale Ulrich 1893
Diagnosis
No diagnoses are available