Trilobita - Ptychopariida - Shumardiidae
Alternative combination: Koldinioidia sulcatus
Full reference: R. A. Robison and J. Pantoja-Alor. 1968. Tremadocian trilobites from the Nochixtlan Region, Oaxaca, Mexico. Journal of Paleontology 42(3):767-800
Belongs to Akoldinioidia according to Z. Zhu and S. Peng 2006
See also Robison and Pantoja-Alor 1968
Sister taxa: Koldinioidia (Liriamnica), Koldinioidia orientalis, Koldinioidia pustulosa, Koldinioidia typicalis, Akoldinioidia dydimacantha, Akoldinioidia trapezoidalis, Eoshumardia cylindrica
Type specimen: USNM 159049, a cephalon/head (cranidium). Its type locality is USNM 16002b, Tinu Formation, Oaxaca, Mexico - Robison and Pantoja-Alor 1968, which is in the Tremadoc of limestone/shale the Tinu Formation Mexico.
Ecology: fast-moving low-level epifaunal carnivore
Distribution: found only at USNM 16002b, Tinu Formation, Oaxaca, Mexico - Robison and Pantoja-Alor 1968
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.