期刊
GFF
卷 136, 期 3, 页码 429-435出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/11035897.2013.837956
关键词
Cryptotreta; Sweden; Askepasma; Brachiopoda; Cryptotretidae; Kalmarsund
资金
- Carlsberg Foundation
- SYNTHESYS - European Community - Research Infrastructure Action under the FP7 Capacities Specific Program [SE-TAF-2649]
The brachiopod originally described as Kuturgina undosa Moberg, 1892 from the early Cambrian (Cambrian Series 2, Stage 4) Nar Shale of Kalmarsund, Sweden, has experienced a long and turbulent history since the original description over 100 years ago. Uncertainties regarding key morphological characters have resulted in the species taxonomically hopping between genera until it was recently assigned to the poorly known genus Cryptotreta Pelman, 1977 and subsequently transferred to the problematic paterinate family Cryptotretidae. Despite members of this group representing the oldest brachiopods in the fossil record, they remain enigmatic, both taxonomically and phylogenetically. The identification of the brachiopod species from the Nar Shale as a cryptotretid means that this brachiopod was the first member of the family to be discovered, yet its systematic position is far from certain. Examination of type material in addition to supplementary material acquired from the Skaggenas Peninsula, Sweden, has elucidated many of the previous ambiguous morphological characteristics of the species. The new morphological information acquired here has resulted in the erection of a new paterinate genus, Tallatella gen. nov., to accommodate the Swedish material previously described as Cryptotreta undosa.
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