Asaphida

Pseudogygites latimarginatus

Order Asaphida / Superfamily Asaphoidea / Family Asaphidae

Katian (Late Ordovician)Canada, USA
Pseudogygites latimarginatus — photo 1
Photo 1 · Lectotype AMNH 30115 (USA, from a Canadian glacial erratic) (Ludvigsen 1979) ROM 35029 Restoration (Canada; Ludvigsen 1979) (Ludvigsen 1979) Meraspid specimen (Canada; Fritz 1959) Injury-hea led specimen Complete dorsal exoskeleton (Canada; Complete dorsal exoskeleton (Canada; (Canada; Bicknell et al., 2023) Chengbei Baigong) Pengcheng Jianke)
Pseudogygites latimarginatus — photo 2
Photo 2 · Lectotype AMNH 30115 (USA, from a Canadian glacial erratic) (Ludvigsen 1979) ROM 35029 Restoration (Canada; Ludvigsen 1979) (Ludvigsen 1979) Meraspid specimen (Canada; Fritz 1959) Injury-hea led specimen Complete dorsal exoskeleton (Canada; Complete dorsal exoskeleton (Canada; (Canada; Bicknell et al., 2023) Chengbei Baigong) Pengcheng Jianke)
Pseudogygites latimarginatus — photo 3
Photo 3 · Lectotype AMNH 30115 (USA, from a Canadian glacial erratic) (Ludvigsen 1979) ROM 35029 Restoration (Canada; Ludvigsen 1979) (Ludvigsen 1979) Meraspid specimen (Canada; Fritz 1959) Injury-hea led specimen Complete dorsal exoskeleton (Canada; Complete dorsal exoskeleton (Canada; (Canada; Bicknell et al., 2023) Chengbei Baigong) Pengcheng Jianke)
Pseudogygites latimarginatus — photo 4
Photo 4 · Lectotype AMNH 30115 (USA, from a Canadian glacial erratic) (Ludvigsen 1979) ROM 35029 Restoration (Canada; Ludvigsen 1979) (Ludvigsen 1979) Meraspid specimen (Canada; Fritz 1959) Injury-hea led specimen Complete dorsal exoskeleton (Canada; Complete dorsal exoskeleton (Canada; (Canada; Bicknell et al., 2023) Chengbei Baigong) Pengcheng Jianke)
Pseudogygites latimarginatus — photo 5
Photo 5 · Lectotype AMNH 30115 (USA, from a Canadian glacial erratic) (Ludvigsen 1979) ROM 35029 Restoration (Canada; Ludvigsen 1979) (Ludvigsen 1979) Meraspid specimen (Canada; Fritz 1959) Injury-hea led specimen Complete dorsal exoskeleton (Canada; Complete dorsal exoskeleton (Canada; (Canada; Bicknell et al., 2023) Chengbei Baigong) Pengcheng Jianke)
Pseudogygites latimarginatus — photo 6
Photo 6 · Lectotype AMNH 30115 (USA, from a Canadian glacial erratic) (Ludvigsen 1979) ROM 35029 Restoration (Canada; Ludvigsen 1979) (Ludvigsen 1979) Meraspid specimen (Canada; Fritz 1959) Injury-hea led specimen Complete dorsal exoskeleton (Canada; Complete dorsal exoskeleton (Canada; (Canada; Bicknell et al., 2023) Chengbei Baigong) Pengcheng Jianke)
Pseudogygites latimarginatus — photo 7
Photo 7 · Lectotype AMNH 30115 (USA, from a Canadian glacial erratic) (Ludvigsen 1979) ROM 35029 Restoration (Canada; Ludvigsen 1979) (Ludvigsen 1979) Meraspid specimen (Canada; Fritz 1959) Injury-hea led specimen Complete dorsal exoskeleton (Canada; Complete dorsal exoskeleton (Canada; (Canada; Bicknell et al., 2023) Chengbei Baigong) Pengcheng Jianke)
Classification
Order Asaphida / Superfamily Asaphoidea / Family Asaphidae
Genus
Pseudogygites Kobayashi, 1934
Genus author
Kobayashi T.
Genus etymology
pseudo-, Greek, false; Ogygites, a trilobite genus name
Species
P. latimarginatus (Hall, 1847)
Species author
Hall J.
Species etymology
lati, wide, broad; marginatus, bordered
Age
Katian (Late Ordovician)
Distribution
Canada, USA
Synonyms
Asaphus? latimarginata; Asaphus canadensis; Basilicus canadensis; Ogygites canadensi; Pseudogygites canadensis; Ogygites latimarginatus
Diagnosis
Dorsal shield ovate with subequal cephalon and pygidium. Cephalon parabolic to semicircular; glabella long, cylindrical, constricted medially, with three pairs of faint lateral glabellar furrows; preglabellar field wide and flat; eyes small, very close to the glabella; librigenae wide with medium-length genal spines. Thorax of 8 segments, axis narrow, slightly wider medially; pleurae wide with deep pleural furrows and no pleural spines. Pygidium subtriangular; axis long, tapering sharply anteriorly, reaching almost to the border; pleural and interpleural furrows distinct; border wide.
Remarks
This species is the type species of the genus Pseudogygites.