
Fig. 2. Schematic outlines of the variability of the dorsal furrow in Acanthomichelinoceras commutatum (Giebel, 1852), showing the base of a chamber mould, with annular elevation dotted. Note the differences of the starting point of the dorsal furrow, sometimes within the mural area, sometimes within the annular elevation. A. NHW 56.9.05/402. B. NHW 56.9.05/404. C. MB.C.5366.4. D. MB.C.5366.1. Not to scale.
Published as part of Kröger, Björn, Klug, Christian & Mapes, Royal, 2005, Soft-tissue attachments in orthocerid and bactritid cephalopods from the Early and Middle Devonian of Germany and Morocco, pp. 329-342 in Acta Palaeontologica Polonica 50 (2) on page 333, DOI: 10.5281/zenodo.13618932
Cephalopoda, Mollusca, Orthocerida, Acanthomichelinoceras, Animalia, Biodiversity, Orthoceratidae, Taxonomy
Cephalopoda, Mollusca, Orthocerida, Acanthomichelinoceras, Animalia, Biodiversity, Orthoceratidae, Taxonomy
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