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APA Citation
Mutvei, H., & Mapes, R. H. (2019). carboniferous orthocerid-like coleoid Mitorthoceras with unique shell structure (new order Tuborthocerida, Coleoidea, Cephalopoda); comparison with bactritid-like coleoid Shimanskya. GFF, 141, 121–132. http://access.bl.uk/ark:/81055/vdc_100092798898.0x00002a