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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Hyolithellus insolitus
Taxonomy
Hyolithellus insolitus was named by Voronin et al. (1982) [Grigorieva in Voronin et al., 1982].
Synonymy list
| Year | Name and author |
|---|---|
| 1982 | Hyolithellus insolitus Voronin et al. |
| 2006 | Hyolithellus insolitus Skovsted and Holmer pp. 334 - 335 figs. 6A - 6E |
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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.
†Hyolithellus insolitus Voronin et al. 1982
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| C. B. Skovsted and L. E. Holmer 2006 | The tubes exhibit an external ornamentation of marked concentric ribs and faint longitudinal furrows and ridges between the ribs (Fig. 6C–D). The concentric ribs are symmetrical in crosssection (Fig. 6D) and may be straight, but more often slightly undulating (Fig. 6E). The density of concentric ribs varies from 6 to 16/mm and the height of the ribs varies from 10 to 19 μm, but individual specimens exhibit more or less homogeneous spacing and amplitude of the ribs. Weakly defined accessory ribs with lower amplitude may sometimes be present between the major ribs (e.g. lower part of Fig. 6E). The longitudinal furrows and ridges between the major ribs are slightly undulating and are discontinuous over the crest of ribs. Their density is approximately 50–30 ridges/mm. The concentric ribs are sometimes reflected, although subdued, on the otherwise smooth internal surfaces (Fig. 6B). |
Measurements
No measurements are available
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| Source: g = genus, o = order | |||||
| References: Hendy 2009, Kiessling 2004 | |||||
Age range: base of the Nemakit-Daldynian to the top of the Botomian or 538.80000 to 512.90000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Nemakit-Daldynian | India | Hyolithellus insolitus (99560) | |
| Atdabanian | Russian Federation (Siberia) | Hyolithellus insolitus (174257) | |
| Botomian | USA (Nevada) | Hyolithellus insolitus (218892) | |
| Dyeran | USA (Nevada) | Hyolithellus insolitus (96417) |