Traits taxon details
original description
Öpik, A. A. (1932). Über die Plectellinen. <em>Universitatis Tartuensis (Dorpatensis).</em> Tartu (1932), pp. 50-85. [details]
basis of record
Treatise on Invertebrate Paleontology. (1997-2007). Part H revised, Brachiopoda. <em>Geological Society of America, Boulder; and University of Kansas Press, Lawrence,.</em> vol. 1-6. note: Williams et al. (2000), Treatise Part H Brachiopoda (revised): Volumes 2 & 3, Linguliformea, Craniiformea, Rhynchonelliformea (part). [details]
additional source
Hessland, I. (1949). Investigations of the Lower Ordovician of the Siljan District, Sweden. v. Notes on Swedish Ahtiella species. <em>Bulletin of the Geological Institutions of the University of Uppsala.</em> 33(3): 511-527, 2 plates. [details] Available for editors 
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