Asaphida

Ogygiocarella debuchii

Order Asaphida / Superfamily Asaphoidea / Family Asaphidae

Darriwilian (Middle Ordovician)UK

Ogygiocarella debuchii — photo 1 — Photo 1 · Sketch published in 1698 (Fortey 2001) Literature specimen (UK; Fortey (UK; Kennedy et al., 2018) Restoration 2001) (illustrated by hp) Injury-healed specimen (UK; Bicknell et al., 2022) Complete dorsal exoskeleton, part and counterpart (UK; Pengcheng Jianke) Literature specimen (UK; Kennedy et al., 2018)

Ogygiocarella debuchii — photo 2 — Photo 2 · Sketch published in 1698 (Fortey 2001) Literature specimen (UK; Fortey (UK; Kennedy et al., 2018) Restoration 2001) (illustrated by hp) Injury-healed specimen (UK; Bicknell et al., 2022) Complete dorsal exoskeleton, part and counterpart (UK; Pengcheng Jianke) Literature specimen (UK; Kennedy et al., 2018)

Ogygiocarella debuchii — photo 3 — Photo 3 · Sketch published in 1698 (Fortey 2001) Literature specimen (UK; Fortey (UK; Kennedy et al., 2018) Restoration 2001) (illustrated by hp) Injury-healed specimen (UK; Bicknell et al., 2022) Complete dorsal exoskeleton, part and counterpart (UK; Pengcheng Jianke) Literature specimen (UK; Kennedy et al., 2018)

Ogygiocarella debuchii — photo 4 — Photo 4 · Sketch published in 1698 (Fortey 2001) Literature specimen (UK; Fortey (UK; Kennedy et al., 2018) Restoration 2001) (illustrated by hp) Injury-healed specimen (UK; Bicknell et al., 2022) Complete dorsal exoskeleton, part and counterpart (UK; Pengcheng Jianke) Literature specimen (UK; Kennedy et al., 2018)

Ogygiocarella debuchii — photo 5 — Photo 5 · Sketch published in 1698 (Fortey 2001) Literature specimen (UK; Fortey (UK; Kennedy et al., 2018) Restoration 2001) (illustrated by hp) Injury-healed specimen (UK; Bicknell et al., 2022) Complete dorsal exoskeleton, part and counterpart (UK; Pengcheng Jianke) Literature specimen (UK; Kennedy et al., 2018)

Ogygiocarella debuchii — photo 6 — Photo 6 · Sketch published in 1698 (Fortey 2001) Literature specimen (UK; Fortey (UK; Kennedy et al., 2018) Restoration 2001) (illustrated by hp) Injury-healed specimen (UK; Bicknell et al., 2022) Complete dorsal exoskeleton, part and counterpart (UK; Pengcheng Jianke) Literature specimen (UK; Kennedy et al., 2018)

Ogygiocarella debuchii — photo 7 — Photo 7 · Sketch published in 1698 (Fortey 2001) Literature specimen (UK; Fortey (UK; Kennedy et al., 2018) Restoration 2001) (illustrated by hp) Injury-healed specimen (UK; Bicknell et al., 2022) Complete dorsal exoskeleton, part and counterpart (UK; Pengcheng Jianke) Literature specimen (UK; Kennedy et al., 2018)

Ogygiocarella debuchii — photo 8 — Photo 8 · Sketch published in 1698 (Fortey 2001) Literature specimen (UK; Fortey (UK; Kennedy et al., 2018) Restoration 2001) (illustrated by hp) Injury-healed specimen (UK; Bicknell et al., 2022) Complete dorsal exoskeleton, part and counterpart (UK; Pengcheng Jianke) Literature specimen (UK; Kennedy et al., 2018)

Ogygiocarella debuchii — photo 9 — Photo 9 · Sketch published in 1698 (Fortey 2001) Literature specimen (UK; Fortey (UK; Kennedy et al., 2018) Restoration 2001) (illustrated by hp) Injury-healed specimen (UK; Bicknell et al., 2022) Complete dorsal exoskeleton, part and counterpart (UK; Pengcheng Jianke) Literature specimen (UK; Kennedy et al., 2018)

Ogygiocarella debuchii — photo 10 — Photo 10 · Sketch published in 1698 (Fortey 2001) Literature specimen (UK; Fortey (UK; Kennedy et al., 2018) Restoration 2001) (illustrated by hp) Injury-healed specimen (UK; Bicknell et al., 2022) Complete dorsal exoskeleton, part and counterpart (UK; Pengcheng Jianke) Literature specimen (UK; Kennedy et al., 2018)

Classification

Order Asaphida / Superfamily Asaphoidea / Family Asaphidae

Genus

Ogygiocarella Harrington & Leanza, 1957

Genus author

Harrington H. J. & Leanza A. F.

Genus etymology

ogygiocar-, Ogygiocaris, a trilobite genus name; -ella, a diminutive suffix

Species

O. debuchii (Brongniart, 1822)

Species author

Brongniart A.

Species etymology

Debuchi, a surname

Age

Darriwilian (Middle Ordovician)

Distribution

Diagnosis

Dorsal shield ovate, cephalon and pygidium semicircular, the pygidium larger than the cephalon. Glabella long, cylindrical, inflated anteriorly; preglabellar field short or absent; eyes large, close to the glabella; librigenae wide with medium-length genal spines. Thorax of 8 segments, axis narrow and of uniform width; pleurae wide with deep pleural furrows and short pleural spines. Pygidial axis narrow, tapering sharply medially, reaching the border; pleural and interpleural furrows distinct; border wide.

Remarks

Ogygiocarella debuchii is the first trilobite published in a scientific journal; initially regarded as a fossil flatfish, it was published by Dr. Edward Lhwyd in 1698.