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Keywords from Image Description:
Tryblidium reticulatum . Dorsal view of the fossil shell of Tryblidium reticulatum Lindstrm from Upper Silur of Gotland Sweden Zittel von archive org Grundzge der Palontologie Palonzoologie Abt Invertebrata Oldenburg Mnchen Leipzig pp archive org page page figure Karl Alfred von Zittel after Gustaf Lindstrm PDold Tryblidium