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Silicunculus
Taxonomy
Silicunculus was named by Bengtson (1986) [Sepkoski's age data: Cm Dres-l O Cara-u]. It is not extant. Its type is Silicunculus australiensis.
It was assigned to Hexactinellida by Bengtson (1986), Sepkoski (2002), Finks and Rigby (2004).
It was assigned to Hexactinellida by Bengtson (1986), Sepkoski (2002), Finks and Rigby (2004).
Species
S. australiensis (type species), S. bengtsoni
Synonymy list
| Year | Name and author |
|---|---|
| 1986 | Silicunculus Bengtson |
| 2002 | Silicunculus Sepkoski |
| 2004 | Silicunculus Finks and Rigby p. 445 |
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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. †Silicunculus Bengtson 1986
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†Silicunculus australiensis Bengtson 1986
†Silicunculus bengtsoni Webby and Trotter 1993
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| S. Bengtson 1986 | Siliceous spicules of strongly modified pentact type, central ray having sharply reclined distal tip, giving the spicule a distinct hook-shape. Lateral rays forming four small processes at proximal end of hook, those facing the direction of reclined tip usually larger than the two others. Surface of spicules generally smooth, but hispid surface may be developed, particularly on the two larger lateral rays. Axial filament or canal present in all rays. Further spicule types may be present but have not been positively identified. |
Measurements
No measurements are available
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| Source: c = class | |||||
| Reference: Kiessling 2004 | |||||
Age range: base of the Mindyallan to the top of the Bolindian or 499.00000 to 443.10000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Mindyallan | Australia (Queensland) | S. australiensis (233863) | |
| Eastonian | Australia (New South Wales) | S. bengtsoni (2696 119501) | |
| Bolindian | Australia (New South Wales) | S. bengtsoni (119489) |