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Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Gyrosphaera siljanensis
Taxonomy
Gyrosphaera siljanensis was named by Noble and Maletz (2000). Its type specimen is UCMP 39922, a test, and it is a 3D body fossil.
Synonymy list
Year | Name and author |
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2000 | Gyrosphaera siljanensis Noble and Maletz p. 267 figs. pl. 2, figs. 4, 5 |
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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.
†Gyrosphaera siljanensis Noble and Maletz 2000
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Diagnosis
Reference | Diagnosis | |
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P. J. Noble and J. Maletz 2000 | Large subspherical shell composed of a loose laby- rinthine mesh that forms three to four spiraliform layers. Five to seven long thin primary spines per hemisphere, average length roughly equal to shell diameter. |
Measurements
No measurements are available
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Source: p = phylum | |||||
Reference: Kiessling 1999 |
Age range: Llandovery or 443.40000 to 433.40000 Ma
Collections: one only
Time interval | Ma | Country or state | Original ID and collection number |
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Llandovery | Sweden | Gyrosphaera siljanensis (90958) |