Tamnasteriidae Reuss, 1864
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publication ID |
https://doi.org/10.1186/s13358-023-00298-y |
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persistent identifier |
https://treatment.plazi.org/id/6F7EC575-5907-4D7C-FF77-7E319887A065 |
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treatment provided by |
Felipe |
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scientific name |
Tamnasteriidae Reuss, 1864 |
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Family Tamnasteriidae Reuss, 1864
Tamnasteria Lesauvage, 1823
Type species. Tamnasteria lamourouxi Lesauvage, 1823
Description Tamnasterioid colony with corallites often arranged in rows. Septa compact. Microstructure of septa of medium-sized trabeculae. Septa in cross section externally slightly thicker, becoming slightly thinner towards the centre. No septal symmetry, but size orders can be distinguished. Septal generations differ in length. Approximately half of all septa extend to the calicular centre. Septa of younger generations often connected to the septa of preceding generations. Septal distal margin finely granulated, lateral face with fine thorns, inner margin smooth. Pali absent. All septa of the first generation are attached to the columella. Costae present, confluent. Occasional synapticulae present, mainly in the space between corallites. Columella styliform. Endotheca consists of numerous dissepiments. Wall absent. Budding extracalicinal.
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