Agnostida

Peratagnostus obsoletus

Order Agnostida / Suborder Agnostina / Superfamily Agnostoidea / Family uncertain

Cambrian, Miaolingian Guzhangian to Furongian JiangshanianHunan, Zhejiang; Australia
Peratagnostus obsoletus — photo 1
Photo 1 · Quadragnostinae. Cephalon CPC 5792, pygidium NIGP 124286 holotype CPC 5787 (Australia; Whittington et al., Reconstruction (Öpik (Hunan; Peng Shanchi 2020) (Hunan; Baishui) 1997) 1967) (Zhejiang; Peng Shanchi et al. (Zhejiang; (Zhejian 2016) Guodong) g; Baishui)
Peratagnostus obsoletus — photo 2
Photo 2 · Quadragnostinae. Cephalon CPC 5792, pygidium NIGP 124286 holotype CPC 5787 (Australia; Whittington et al., Reconstruction (Öpik (Hunan; Peng Shanchi 2020) (Hunan; Baishui) 1997) 1967) (Zhejiang; Peng Shanchi et al. (Zhejiang; (Zhejian 2016) Guodong) g; Baishui)
Peratagnostus obsoletus — photo 3
Photo 3 · Quadragnostinae. Cephalon CPC 5792, pygidium NIGP 124286 holotype CPC 5787 (Australia; Whittington et al., Reconstruction (Öpik (Hunan; Peng Shanchi 2020) (Hunan; Baishui) 1997) 1967) (Zhejiang; Peng Shanchi et al. (Zhejiang; (Zhejian 2016) Guodong) g; Baishui)
Peratagnostus obsoletus — photo 4
Photo 4 · Quadragnostinae. Cephalon CPC 5792, pygidium NIGP 124286 holotype CPC 5787 (Australia; Whittington et al., Reconstruction (Öpik (Hunan; Peng Shanchi 2020) (Hunan; Baishui) 1997) 1967) (Zhejiang; Peng Shanchi et al. (Zhejiang; (Zhejian 2016) Guodong) g; Baishui)
Peratagnostus obsoletus — photo 5
Photo 5 · Quadragnostinae. Cephalon CPC 5792, pygidium NIGP 124286 holotype CPC 5787 (Australia; Whittington et al., Reconstruction (Öpik (Hunan; Peng Shanchi 2020) (Hunan; Baishui) 1997) 1967) (Zhejiang; Peng Shanchi et al. (Zhejiang; (Zhejian 2016) Guodong) g; Baishui)
Peratagnostus obsoletus — photo 6
Photo 6 · Quadragnostinae. Cephalon CPC 5792, pygidium NIGP 124286 holotype CPC 5787 (Australia; Whittington et al., Reconstruction (Öpik (Hunan; Peng Shanchi 2020) (Hunan; Baishui) 1997) 1967) (Zhejiang; Peng Shanchi et al. (Zhejiang; (Zhejian 2016) Guodong) g; Baishui)
Peratagnostus obsoletus — photo 7
Photo 7 · Quadragnostinae. Cephalon CPC 5792, pygidium NIGP 124286 holotype CPC 5787 (Australia; Whittington et al., Reconstruction (Öpik (Hunan; Peng Shanchi 2020) (Hunan; Baishui) 1997) 1967) (Zhejiang; Peng Shanchi et al. (Zhejiang; (Zhejian 2016) Guodong) g; Baishui)
Peratagnostus obsoletus — photo 8
Photo 8 · Quadragnostinae. Cephalon CPC 5792, pygidium NIGP 124286 holotype CPC 5787 (Australia; Whittington et al., Reconstruction (Öpik (Hunan; Peng Shanchi 2020) (Hunan; Baishui) 1997) 1967) (Zhejiang; Peng Shanchi et al. (Zhejiang; (Zhejian 2016) Guodong) g; Baishui)
Classification
Order Agnostida / Suborder Agnostina / Superfamily Agnostoidea / Family uncertain
Genus
Peratagnostus
Genus author
Ö pik A. A.
Genus etymology
peras, Greek, end, terminus; Agnostus, a trilobite genus name. Referring to the genus as the end of the
Species
P. obsoletus (Kobayashi, 1935)
Species author
Kobayashi T.
Species etymology
obsoletus, obsolete, reduced.
Age
Cambrian, Miaolingian Guzhangian to Furongian Jiangshanian
Distribution
Hunan, Zhejiang; Australia
Synonyms
Agnostus(Lejopyge?)obsoletus; Lejopyge?obsoletus; Phoidagnostus obsoletus; Phalacroma bairdi; P. sinicum; P. sinica Lejopyge?controversa; Peratagnostus nobilis; P. sinicus; Grandagnostus bairdi orbiformis
Diagnosis
Cephalon and pygidium subsemicircular. Glabella very weak or indistinct; posterior margin with remnants of very short basal lobe furrows; center of cephalon with a very weak median node. Pygidial axis very weak or indistinct; axial node at the anterior quarter; pygidial border of moderate width and flat.
Remarks
Typical body length about 0.2-0.8 cm.