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Actinochilina
Taxonomy
Actinochilina was named by Jaanusson (1957) [Sepkoski's age data: O Llde-u O Cara-l Sepkoski's reference number: 855].
It was assigned to Chilobolbininae by Jaanusson (1957); and to Palaeocopida by Sepkoski (2002).
It was assigned to Chilobolbininae by Jaanusson (1957); and to Palaeocopida by Sepkoski (2002).
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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. †Actinochilina Jaanusson 1957
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Diagnosis
Reference | Diagnosis | |
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V. Jaanusson 1957 | Unisulcate, sulcus deep, straight, more or less transversally directed, reaching to about half the height of the lateral surface of the domicilium, or slightly longer (tr.). Velar frill comparatively broad anteriorly and ventrally, narrowing considerably in posteradorsal and anterodorsal direction, and reaching the cardinal corners as a narrow flange or ridge; the decrease in width of the frill is as a rule stronger towards the posterior than towards the anterior cardinal corner. Frill of the tecnomorphs concave ventrally and posteroventrally and faintly convex anteroventrally; heteromorphs with a convex dolon anteroventrally and ventrally. |
Measurements
No measurements are available
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Source: c = class | |||||
Reference: Kiessling 2004 |
Age range: base of the Early/Lower Llandeilo to the top of the Harnagian or 466.00000 to 455.80000 Ma
Collections (7 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Early/Lower Llandeilo | Sweden | A. sp. (2939) | |
Llandeilo | Sweden (Vastergotland) | A. sp. (77085 77098) | |
Costonian - Harnagian | Sweden | A. sp. (2769) | |
Caradoc | Sweden (Vastergotland) | A. sp. (77099) A. suecica (77083) | |
Soudleyan - Marshbrookian | Sweden | A. sp. (2941) |