Published December 31, 2007 | Version v1
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Fig. 4 in Concentrations of juvenile and small adult cephalopods in the Hirnantian cherts (Late Ordovician) of Porkuni, Estonia

Description

Fig. 4. Polished median sections of cephalopods of the Siuge Member of Porkuni, Estonia. A. Eriditidae gen. et spec. indet, TUG 101/66a, detail of a siphuncular segment showing the annular endosiphuncular deposits. B. Orthoceratidae gen. et spec. indet. A, TUG 1227/1. C. Parvihebetoceras wahli sp. nov., TUG 1227/10, note the asymmetrical development of the siphuncular necks. D. Pomerantsoceras tibia spec. nov. 1227/45, fragment of apical part. +

Notes

Published as part of Kröger, Björn, 2007, Concentrations of juvenile and small adult cephalopods in the Hirnantian cherts (Late Ordovician) of Porkuni, Estonia, pp. 591-608 in Acta Palaeontologica Polonica 52 (3) on page 594, DOI: 10.5281/zenodo.13741383

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