Illaenus lacertus Whittington 1954 (trilobite)

Trilobita - Corynexochida - Illaenidae

Full reference: H. B. Whittington. 1954. Ordovician trilobites from Silliman's Fossil Mount. in A. K. Miller, W. Youngquist, and C. Collinson, Ordovician cephalopod fauna of Baffin Island, Geological Society of America Memoir 62:119-149

Belongs to Illaenus according to H. B. Whittington 1954

Sister taxa: Deucalion, Illaenus (Parillaenus), Illaenus aduncus, Illaenus alveatus, Illaenus angelini, Illaenus auriculatus, Illaenus bayfieldi, Illaenus bucculentus, Illaenus cekovioides, Illaenus consimilis, Illaenus consobrinus, Illaenus crassicauda, Illaenus dalecarlicus, Illaenus fieldi, Illaenus fraternus, Illaenus gelasinus, Illaenus gigas, Illaenus kueichouensis, Illaenus lautus, Illaenus marginalis, Illaenus oscitatus, Illaenus protuberans, Illaenus renhuaniensis, Illaenus sinensis, Illaenus spiculatus, Illaenus tianrongi, Illaenus tingi, Illaenus tumidifrons, Illaenus usitatus, Illaenus utahensis, Illaenus viator, Illaenus wimani, Actinolobus atavus, Actinolobus americanus

Type specimen: USNM, an exoskeleton

Ecology: nektobenthic carnivore

Distribution:

• Ordovician of Canada (3: Northwest Territories, Nunvait collections)

Total: 3 collections each including a single occurrence

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