Petroxestes is a shallow, elongate boring (a type of trace fossil) originally found excavated in carbonate skeletons and hardgrounds of the Upper Ordovician of North America. [2][3] These Ordovician borings were likely made by the mytilacean bivalve Corallidomus as it ground a shallow groove in the substrate to maintain its feeding position.[4] They are thus the earliest known bivalve borings.[5] Petroxestes was later described from the Lower Silurian of Anticosti Island (Canada).[6] and the Miocene of the Caribbean.[7]
| Petroxestes | |
|---|---|
| |
| Petroxestes pera borings in an Upper Ordovician hardground (Waynesville Formation, southern Ohio). | |
Trace fossil classification 
| |
| Ichnofamily: | †Rogerellidae |
| Ichnogenus: | †Petroxestes Wilson & Palmer, 1988 |
| Type ichnospecies | |
| Petroxestes pera Wilson & Palmer, 1988
| |
| Ichnospecies[1] | |
| |
References
edit- ^ Wisshak, M.; Knaust, D.; Bertling, M. (2019). "Bioerosion ichnotaxa: review and annotated list". Facies. 65 (2): 24. doi:10.1007/s10347-019-0561-8.
- ^ Wilson, M.A., Palmer, T.J. (1988). "Nomenclature of a bivalve boring from the Upper Ordovician of the midwestern United States". Journal of Paleontology. 62 (2): 306–308. doi:10.1017/S0022336000029978. S2CID 131394939.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ^ Wilson, M.A., Palmer, T.J. (2006). "Patterns and processes in the Ordovician Bioerosion Revolution". Ichnos. 13 (3): 109–112. doi:10.1080/10420940600850505. S2CID 128831144.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ^ Pojeta, J., Jr., Palmer, T.J. (1976). "The origin of rock boring in mytilacean pelecypods". Alcheringa. 1 (2): 167–179. doi:10.1080/03115517608619068.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ^ Taylor, P.D., Wilson. M.A. (2003). "Palaeoecology and evolution of marine hard substrate communities". Earth-Science Reviews. 62 (1–2): 1–103. Bibcode:2003ESRv...62....1T. doi:10.1016/S0012-8252(02)00131-9.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ^ Tapanila, L., Copper, P. (2002). "Endolithic trace fossils in Ordovician-Silurian corals and stromatoporoids, Anticosti Island, eastern Canada". Acta Geológica Hispánica. 37: 15–20.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ^ Pickerill, R.D., Donovan, S.K., Portell, R.W. (2001). "The bioerosional ichnofossil Petroxestes pera Wilson and Palmer from the Middle Miocene of Carriacou, Lesser Antilles". Caribbean Journal of Science. 37: 130–131.
{{cite journal}}: CS1 maint: multiple names: authors list (link)