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Tessarastrum
Taxonomy
Tessarastrum was named by Haeckel (1887) [Porodiscida with four simple, undivided, chambered arms, connected by a patagium; quadrangular shell bilateral, two opposite arms of the main axis (or principal arms) different from the two others (or lateral arms).]. It is extant. It was considered monophyletic by Haeckel (1887).
It was assigned to Radiolaria by Haeckel (1887).
It was assigned to Radiolaria by Haeckel (1887).
Synonymy list
| Year | Name and author |
|---|---|
| 1887 | Tessarastrum Haeckel |
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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. Tessarastrum Haeckel 1887
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: p = phylum | |||||
| Reference: Kiessling 1999 | |||||
Age range: Early/Lower Coniacian or 89.30000 to 85.80000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Coniacian | Denmark | T. quadratum (62505) |