Redlichiida

Abadiella huoi

Order Redlichiida / Suborder Redlichiina / Superfamily Redlichioidea / Family Abadiellidae

Cambrian, Series 2, Stage 3Shaanxi, Yunnan, Sichuan; Australia

Abadiella huoi — photo 1 — Photo 1 · Parabadiella huoi; Parabadiella hanzhongensis; Parabadiella nanzhengensis Parabadiella(Danangouia)transversa; Type specimen (Shaanxi; Whittington et al., 1997) Figured specimen (Shaanxi; Wang et al., 2022) Figured specimen (Shaanxi; Zhang et al., 2017) Figured specimen (Shaanxi; Peng Shanchi 2020)

Abadiella huoi — photo 2 — Photo 2 · Parabadiella huoi; Parabadiella hanzhongensis; Parabadiella nanzhengensis Parabadiella(Danangouia)transversa; Type specimen (Shaanxi; Whittington et al., 1997) Figured specimen (Shaanxi; Wang et al., 2022) Figured specimen (Shaanxi; Zhang et al., 2017) Figured specimen (Shaanxi; Peng Shanchi 2020)

Abadiella huoi — photo 3 — Photo 3 · Parabadiella huoi; Parabadiella hanzhongensis; Parabadiella nanzhengensis Parabadiella(Danangouia)transversa; Type specimen (Shaanxi; Whittington et al., 1997) Figured specimen (Shaanxi; Wang et al., 2022) Figured specimen (Shaanxi; Zhang et al., 2017) Figured specimen (Shaanxi; Peng Shanchi 2020)

Abadiella huoi — photo 4 — Photo 4 · Parabadiella huoi; Parabadiella hanzhongensis; Parabadiella nanzhengensis Parabadiella(Danangouia)transversa; Type specimen (Shaanxi; Whittington et al., 1997) Figured specimen (Shaanxi; Wang et al., 2022) Figured specimen (Shaanxi; Zhang et al., 2017) Figured specimen (Shaanxi; Peng Shanchi 2020)

Classification

Order Redlichiida / Suborder Redlichiina / Superfamily Redlichioidea / Family Abadiellidae

Genus

Abadiella Hupé, 1953

Genus author

Hup é P.

Genus etymology

Unknown

Species

A. huoi (Chang, 1966)

Species author

Zhang Wentang

Species etymology

Huo — named for the paleontologist Mr Huo Shicheng

Age

Cambrian, Series 2, Stage 3

Distribution

Shaanxi, Yunnan, Sichuan; Australia

Synonyms

Parabadiella(Danangouia)quadrata; Parabadiella obscurata Parabadiella shaanxiensis; Parabadiella tenuilimbata; Guangyuanaspis modaoyaensis; Parabadiella longmenshanensis; Guangyuanaspis elegans; Guangyuanaspis shaanxiensis

Diagnosis

Glabella conical, three pairs of glabellar furrows; Occipital ring with occipital spine; Eye of moderate size, roughly parallel to the axis, posterior end far from the glabella; Eye ridge long; Ocular area of fixed cheek broad; Anterior border short, axial area which projects backward as a plectrum-like extension joining the front of the glabella; genal field of the free cheek broad, genal spine of moderate length. Thorax of 17 segments, axis nearly as wide as the pleural regions; pleural furrows broad and deep, with short pleural spines. Pygidium extremely small, without a border.

Remarks

This is the earliest trilobite known from China, and one of the earliest trilobites in the world.