Scolopodus

Pander’s original type specimen of Scolopodus, S. sublaevis, in lateral and posterior view and with cross-section, from Tolmacheva (2006).

Belongs within: Conodonti.

Scolopodus is an Early Ordovician conodont genus. The apparatus of Scolopodus was composed of simple fang-like elements bearing longitudinal ridges; elements within an apparatus varied depending on position in their curvature and the arrangement of ridges.

The basal species Scolopodus staufferi was named on the basis of simple cones with a shallow excavated bases, a simply conical basal cavity with the apex near the anterior margin, and an erect cusp with a grooved posterior costa and two lateral costae (Druce & Jones 1971).

Characteristics (from Tolmacheva 2006): Hyaline and partly albid, finely costate coniform conodonts with rounded cross−section, not greatly expanded base. Apparatuses with 3–6 morphotypes of symmetrical as well as asymmetrical elements.

<==Scolopodus Pander 1856 [Scolopodontidae]DJ71
| i. s.: *S. sublaevis Pander 1856DJ71
| S. asymmetricus Druce & Jones 1971DJ71
| S. krummiPBJ03
| S. praecornuformisFEZ05
| S. quadraplicatus Branson & Mehl 1933DJ71
| S. rexS88
| S. subrexPBJ03
| S. triplicatus Ethington & Clark 1964DJ71
|--S. staufferi (Furnish 1938) [=Acontiodus staufferi; incl. S. robustus Ethington & Clark 1964]DJ71
|--S. transitans Druce & Jones 1971DJ71
|--+--S. bassleri (Furnish 1938) (see below for synonymy)DJ71
| `--S. warendensis Druce & Jones 1971DJ71
`--+--S. iowensis (Furnish 1938) [=Acontiodus iowensis]DJ71
`--S. propinquusDJ71

Scolopodus bassleri (Furnish 1938) [=Paltodus bassleri; incl. Sco. cornuformis Sergeeva 1963, Scandodus rectus Lindström 1954, P. variabilis Furnish 1938]DJ71

*Type species of generic name indicated

References

[DJ71] Druce, E. C., & P. J. Jones. 1971. Cambro-Ordovician conodonts from the Burke River Structural Belt, Queensland. Commonwealth of Australia, Bureau of National Development, Bureau of Mineral Resources, Geology and Geophysics, Bulletin 110: 1–159.

[FEZ05] Feng, H., B.-D. Erdtmann & Y. Zhang. 2005. Taxonomy and phylogeny of Staurograptus Emmons from the base of the Ordovician. Palaeontology 48 (5): 1007–1019.

[PBJ03] Pyle, L. J., C. R. Barnes & Z. Ji. 2003. Conodont fauna and biostratigraphy of the Outram, Skoki, and Owen Creek Formations (Lower to Middle Ordovician), Wilcox Pass, Alberta, Canada. Journal of Paleontology 77 (5): 958–976.

[S88] Sweet, W. C. 1988. The Conodonta: Morphology, taxonomy, paleoecology, and evolutionary history of a long extinct animal phylum. Clarendon Press: Oxford.

Tolmacheva, T. Yu. 2006. Apparatus of the conodont Scolopodus striatus Pander, 1856 and a re-evaluation of Pander’s species of Scolopodus. Acta Palaeontologica Polonica 51 (2): 247–260.

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