perekond
Katbergia Gastaldo et Roleson, 2008
Taksoni kirjeldused
Gastaldo & Rolerson, 2008
Diagnosis. Long, cylindrical, unlined, non-branching burrow with a terminal chamber; terminal chamber c. 2–3 ·cylinder diameter, extending 4–6 cm beyond end of cylindrical geometry; inclined at angles ranging from 11 to 35 degrees, straight to sinusoidally curved, overall sigmoidal geometry; burrow wall characterized by paired scratches.
Klassifikatsioon