Agnostida

Glyptagnostus stolidotus

Order Agnostida / Suborder Agnostina / Superfamily Agnostoidea / Family Glyptagnostidae

Cambrian, Miaolingian, GuzhangianZhejiang, Hunan, Xinjiang; North America, Europe, Australia
Glyptagnostus stolidotus — photo 1
Photo 1 · Probable meraspid specimen, body length 2, 2.5, 3 mm (Zhejiang; Baishui) Holotype specimen CPC 584 NIGP 124244, 124246 (rubber cast, Australia; Öpik 1967) (Hunan; Peng Shanchi 2020) Complete dorsal shield (Xinjiang; Guapi) Complete dorsal shield Complete dorsal shield (Zhejiang; Tang Shi) (Zhejiang; Guodong) Complete dorsal shield (Zhejiang; Baishui)
Glyptagnostus stolidotus — photo 2
Photo 2 · Probable meraspid specimen, body length 2, 2.5, 3 mm (Zhejiang; Baishui) Holotype specimen CPC 584 NIGP 124244, 124246 (rubber cast, Australia; Öpik 1967) (Hunan; Peng Shanchi 2020) Complete dorsal shield (Xinjiang; Guapi) Complete dorsal shield Complete dorsal shield (Zhejiang; Tang Shi) (Zhejiang; Guodong) Complete dorsal shield (Zhejiang; Baishui)
Glyptagnostus stolidotus — photo 3
Photo 3 · Probable meraspid specimen, body length 2, 2.5, 3 mm (Zhejiang; Baishui) Holotype specimen CPC 584 NIGP 124244, 124246 (rubber cast, Australia; Öpik 1967) (Hunan; Peng Shanchi 2020) Complete dorsal shield (Xinjiang; Guapi) Complete dorsal shield Complete dorsal shield (Zhejiang; Tang Shi) (Zhejiang; Guodong) Complete dorsal shield (Zhejiang; Baishui)
Glyptagnostus stolidotus — photo 4
Photo 4 · Probable meraspid specimen, body length 2, 2.5, 3 mm (Zhejiang; Baishui) Holotype specimen CPC 584 NIGP 124244, 124246 (rubber cast, Australia; Öpik 1967) (Hunan; Peng Shanchi 2020) Complete dorsal shield (Xinjiang; Guapi) Complete dorsal shield Complete dorsal shield (Zhejiang; Tang Shi) (Zhejiang; Guodong) Complete dorsal shield (Zhejiang; Baishui)
Glyptagnostus stolidotus — photo 5
Photo 5 · Probable meraspid specimen, body length 2, 2.5, 3 mm (Zhejiang; Baishui) Holotype specimen CPC 584 NIGP 124244, 124246 (rubber cast, Australia; Öpik 1967) (Hunan; Peng Shanchi 2020) Complete dorsal shield (Xinjiang; Guapi) Complete dorsal shield Complete dorsal shield (Zhejiang; Tang Shi) (Zhejiang; Guodong) Complete dorsal shield (Zhejiang; Baishui)
Glyptagnostus stolidotus — photo 6
Photo 6 · Probable meraspid specimen, body length 2, 2.5, 3 mm (Zhejiang; Baishui) Holotype specimen CPC 584 NIGP 124244, 124246 (rubber cast, Australia; Öpik 1967) (Hunan; Peng Shanchi 2020) Complete dorsal shield (Xinjiang; Guapi) Complete dorsal shield Complete dorsal shield (Zhejiang; Tang Shi) (Zhejiang; Guodong) Complete dorsal shield (Zhejiang; Baishui)
Glyptagnostus stolidotus — photo 7
Photo 7 · Probable meraspid specimen, body length 2, 2.5, 3 mm (Zhejiang; Baishui) Holotype specimen CPC 584 NIGP 124244, 124246 (rubber cast, Australia; Öpik 1967) (Hunan; Peng Shanchi 2020) Complete dorsal shield (Xinjiang; Guapi) Complete dorsal shield Complete dorsal shield (Zhejiang; Tang Shi) (Zhejiang; Guodong) Complete dorsal shield (Zhejiang; Baishui)
Glyptagnostus stolidotus — photo 8
Photo 8 · Probable meraspid specimen, body length 2, 2.5, 3 mm (Zhejiang; Baishui) Holotype specimen CPC 584 NIGP 124244, 124246 (rubber cast, Australia; Öpik 1967) (Hunan; Peng Shanchi 2020) Complete dorsal shield (Xinjiang; Guapi) Complete dorsal shield Complete dorsal shield (Zhejiang; Tang Shi) (Zhejiang; Guodong) Complete dorsal shield (Zhejiang; Baishui)
Glyptagnostus stolidotus — photo 9
Photo 9 · Probable meraspid specimen, body length 2, 2.5, 3 mm (Zhejiang; Baishui) Holotype specimen CPC 584 NIGP 124244, 124246 (rubber cast, Australia; Öpik 1967) (Hunan; Peng Shanchi 2020) Complete dorsal shield (Xinjiang; Guapi) Complete dorsal shield Complete dorsal shield (Zhejiang; Tang Shi) (Zhejiang; Guodong) Complete dorsal shield (Zhejiang; Baishui)
Classification
Order Agnostida / Suborder Agnostina / Superfamily Agnostoidea / Family Glyptagnostidae
Genus
Glyptagnostus Whitehouse, 1936
Genus author
Whitehouse F. W.
Genus etymology
glypt, Greek, carved; Agnostus, a trilobite genus name.
Species
G. stolidotus Öpik, 1961
Species author
Ö pik A. A.
Species etymology
stol-, Greek, cloak, armour, referring to the appearance of the species as if clad in a garment with many folds.
Age
Cambrian, Miaolingian, Guzhangian
Distribution
Zhejiang, Hunan, Xinjiang; North America, Europe, Australia
Synonyms
Glyptagnostus fossus
Diagnosis
Glabella divided into two segments, frontal segment nearly square, middle of posterior segment raised into a small node; anterior median furrow long; cheek with radiating furrows. Pygidial axis long, divided into three rings; second ring with a relatively large prominent node; posterior median furrow distinct; pleural region also with radiating furrows. Border furrow narrow and deep, border narrow, with a pair of small marginal spines.
Remarks
Typical body length about 0.2-1.2 cm.