Agnostida

Goniagnostus fumicola

Order Agnostida / Suborder Agnostina / Superfamily Agnostoidea / Family Ptychagnostidae

Cambrian, Miaolingian, GuzhangianHunan, Guizhou, Zhejiang, Xinjiang; Australia

Goniagnostus fumicola — photo 1 — Photo 1 · Latin, fum, fumeus, smoky + -cola, dweller; meaning dwelling in smoke, alluding to its occurrence in Smoky Creek, Holotype CPC3598 Reconstruction (Australia; Öpik 1979) (drawn by Haixiang) (Australia; Laurie 1989) Illustrated specimens (Hunan; Peng Complete dorsal shield, cheek with dense fine lineations Shanchi 2020) (Guizhou; Mr. Y)

Goniagnostus fumicola — photo 2 — Photo 2 · Latin, fum, fumeus, smoky + -cola, dweller; meaning dwelling in smoke, alluding to its occurrence in Smoky Creek, Holotype CPC3598 Reconstruction (Australia; Öpik 1979) (drawn by Haixiang) (Australia; Laurie 1989) Illustrated specimens (Hunan; Peng Complete dorsal shield, cheek with dense fine lineations Shanchi 2020) (Guizhou; Mr. Y)

Goniagnostus fumicola — photo 3 — Photo 3 · Latin, fum, fumeus, smoky + -cola, dweller; meaning dwelling in smoke, alluding to its occurrence in Smoky Creek, Holotype CPC3598 Reconstruction (Australia; Öpik 1979) (drawn by Haixiang) (Australia; Laurie 1989) Illustrated specimens (Hunan; Peng Complete dorsal shield, cheek with dense fine lineations Shanchi 2020) (Guizhou; Mr. Y)

Goniagnostus fumicola — photo 4 — Photo 4 · Latin, fum, fumeus, smoky + -cola, dweller; meaning dwelling in smoke, alluding to its occurrence in Smoky Creek, Holotype CPC3598 Reconstruction (Australia; Öpik 1979) (drawn by Haixiang) (Australia; Laurie 1989) Illustrated specimens (Hunan; Peng Complete dorsal shield, cheek with dense fine lineations Shanchi 2020) (Guizhou; Mr. Y)

Goniagnostus fumicola — photo 5 — Photo 5 · Latin, fum, fumeus, smoky + -cola, dweller; meaning dwelling in smoke, alluding to its occurrence in Smoky Creek, Holotype CPC3598 Reconstruction (Australia; Öpik 1979) (drawn by Haixiang) (Australia; Laurie 1989) Illustrated specimens (Hunan; Peng Complete dorsal shield, cheek with dense fine lineations Shanchi 2020) (Guizhou; Mr. Y)

Classification

Order Agnostida / Suborder Agnostina / Superfamily Agnostoidea / Family Ptychagnostidae

Genus

Goniagnostus Howell, 1935

Genus author

Howell B. F.

Genus etymology

gon, goniatus, angular, angled; Agnostus, a trilobite genus name.

Species

G. fumicola Öpik, 1961

Species author

Ö pik A. A.

Species etymology

Queensland, Australia. Smoky Creek

Age

Cambrian, Miaolingian, Guzhangian

Distribution

Hunan, Guizhou, Zhejiang, Xinjiang; Australia

Synonyms

Ptychagnostus(Goniagnostus)fumicola; P.(G.)nodibundus; Goniagnostus venustus; G.(Allobodochus) fumicola; G.(A.)nodibundus

Diagnosis

Compared with the type species Goniagnostus nathorsti: cephalon and pygidium both with slender, long posterolateral spines; cheek with dense fine lineations; anterior end of glabellar frontal lobe without anterior pit; pygidium with dense Vesicular nodose ornament; Pygidial axis M1 and M2 laterally tripartite more distinct; Terminal lobe of pygidial axis depressed more distinct.