The International Commission on Zoological Nomenclature has conserved the usage of the generic name Siphonichnus Stanistreet, le Blanc Smith & Cadle, 1980 for an important group of indicator trace fossils, by giving it precedence over its rarely-used senior subjective synonym OpthalmichniumPfeiffer, 1968.
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ichnotaxonomy
nomenclature
Opthalmichnium
Planolites
Planolites ophthalmoides
Siphonichnus
Siphonichnus eccaensis