Agnostida

Phalagnostus nudus

Order Agnostida / Suborder Agnostina / Superfamily Agnostoidea / Family uncertain

Cambrian, Miaolingian, DrumianCzech Republic, Denmark, Sweden, UK
Phalagnostus nudus — photo 1
Photo 1 · (Denmark; Weidner et al., 2014) Neotype NMCC229 (Czech Republic; Whittington et al., 1997) (UK; Kennedy et al., 2018) (Czech Republic; trilobites.info, via Budil & Fatka, 2008) TUG 434-63 & 64 (Czech Republic; geoloogia.info)
Phalagnostus nudus — photo 2
Photo 2 · (Denmark; Weidner et al., 2014) Neotype NMCC229 (Czech Republic; Whittington et al., 1997) (UK; Kennedy et al., 2018) (Czech Republic; trilobites.info, via Budil & Fatka, 2008) TUG 434-63 & 64 (Czech Republic; geoloogia.info)
Phalagnostus nudus — photo 3
Photo 3 · (Denmark; Weidner et al., 2014) Neotype NMCC229 (Czech Republic; Whittington et al., 1997) (UK; Kennedy et al., 2018) (Czech Republic; trilobites.info, via Budil & Fatka, 2008) TUG 434-63 & 64 (Czech Republic; geoloogia.info)
Phalagnostus nudus — photo 4
Photo 4 · (Denmark; Weidner et al., 2014) Neotype NMCC229 (Czech Republic; Whittington et al., 1997) (UK; Kennedy et al., 2018) (Czech Republic; trilobites.info, via Budil & Fatka, 2008) TUG 434-63 & 64 (Czech Republic; geoloogia.info)
Phalagnostus nudus — photo 5
Photo 5 · (Denmark; Weidner et al., 2014) Neotype NMCC229 (Czech Republic; Whittington et al., 1997) (UK; Kennedy et al., 2018) (Czech Republic; trilobites.info, via Budil & Fatka, 2008) TUG 434-63 & 64 (Czech Republic; geoloogia.info)
Phalagnostus nudus — photo 6
Photo 6 · (Denmark; Weidner et al., 2014) Neotype NMCC229 (Czech Republic; Whittington et al., 1997) (UK; Kennedy et al., 2018) (Czech Republic; trilobites.info, via Budil & Fatka, 2008) TUG 434-63 & 64 (Czech Republic; geoloogia.info)
Classification
Order Agnostida / Suborder Agnostina / Superfamily Agnostoidea / Family uncertain
Genus
Phalagnostus Howell, 1955
Genus author
Howell B. F.
Genus etymology
phal, Greek, bright, shining; Agnostus, a trilobite genus name.
Species
P. nudus (Beyrich, 1845)
Species author
Beyrich E.
Species etymology
nudus, bare, hairless.
Age
Cambrian, Miaolingian, Drumian
Distribution
Czech Republic, Denmark, Sweden, UK
Synonyms
Battus nudus; Agnostus nudus; Phalacroma nudum; Phalagnostus scanicus
Diagnosis
Glabella and pygidial axis greatly effaced. Cephalon elongate-oval, lower part straight; small node at the middle of the cephalon; no border. Thoracic axis unsegmented. Pygidium nearly round, with elongate node anteriorly; pygidial border furrow deep; border broad.
Remarks
This species is the type species of Phalagnostus.