File:Venomous conodonts.jpg

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Italiano: Elements of venomous conodonts. A. Panderodus sulcatus (Fåhræus, 1966), Middle Ordovician, borehole Deniski, eastern Poland; ZPAL C.19/150.1. B. Panderodus greenlandensis Armstrong, 1990, Early Silurian, Jädivere, Estonia; ZPAL C.19/145.2. C, D. Protopanderodus calceatus Bagnoli and Stouge, 1997, Middle Ordovician, borehole Pieszkowo, north−eastern Poland. C. Whole element; ZPAL C.19/156.3. D. A fragment showing cross section; ZPAL C.19/159.19. E. Panderodus sp., Middle Ordovician, borehole Stadniki, eastern Poland; ZPAL C.19/159.12. F. Dapsilodus mutates (Branson and Mehl, 1933), Late Ordovician, borehole Stadniki, eastern Poland; ZPAL C.19/159.4. G. Decoriconus fragilis (Branson and Mehl, 1933), Middle Silurian, borehole Gołdap, northern Poland; ZPAL C.19/160.12. H. Parapanderodus sp., Early Silurian, Podolia, Ukraine; ZPAL C.15/1. I. Panderodus sp. Middle Silurian, borehole Gołdap, northern Poland; ZPAL C.19/149.2, whole element (I1), distal part of the specimen showing wear of the tip (I2). J. Panderodus greenlandensis, Early Silurian, Jädivere, Estonia; ZPAL C.19/145.1, whole specimen (J1), distal part of the same specimen showing wear of the tip (J2), a fragment of the specimen showing thin longitudinal ridges parallel to the groove and sharp edges delimiting the grooved surface (J3), basal part of the specimen showing coarse ridges (J4).
Date
Source Szaniawski, H. 2009. The earliest known venomous animals recognized among conodonts. Acta Palaeontologica Polonica 54 (4): 669–676. doi:10.4202/app.2009.0045
Author Szaniawski, H.

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