Traits taxon details
original description
Chernyshev, B. I. (1951). Semeystvo Ledidae iz Kamennougol'nykh otlozheniy SSSR [The family Ledidae from the Carboniferous deposits of the USSR]. <em>Akademiya Nauk Ukrainskoy SSR, Kiev, Institut Geologicheskii Nauk Trudy, Seriya Stratigrafiya i Paleontologiya.</em> 2: 40 pp. page(s): 9 [details]
basis of record
Klug, C.; Kröger, B.; Rücklin, M.; Korn, D.; Schemm-Gregory, M.; De Baets, K.; Mapes, R. H. (2008). Ecological change during the early Emsian (Devonian in the Tafilalt (Morocco), the origin of the Ammonoidea, and the first African pyrgocystid edrioasteroids, machaerids and phyllocarids. <em>Palaeontographica, Abt. A.</em> 283(4-6): 83-176. page(s): 116 [details] Available for editors 
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