†Aspidagnostus laevis Palmer 1962 (artiopod)

Artiopoda - Agnostida - Clavagnostidae

Synonyms: Aspidagnostus pentagonus Lu and Lin 1989, Aspidagnostus taoyuanensis Peng 1987

Full reference: A.R. Palmer. 1962. Glyptagnostus and associated trilobites in the United States. United States Geological Survey Professional Paper 374(F):F1-F49

Belongs to Aspidagnostus according to Palmer 1962

See also Lu and Lin 1989

Sister taxa: Aspidagnostus lunulosus, Aspidagnostus orientalis, Aspidagnostus parmatus, Aspidagnostus primitivus, Aspidagnostus rugosus

Type specimens:

  • Aspidagnostus laevis: USNM 143130, a cephalon/head. Its type locality is Duck Creek [Raiff Limestone], which is in a Dresbachian marine limestone in the Raiff Limestone Formation of Nevada.
  • Aspidagnostus pentagonus: Its type locality is Tianmashan II, bed 5, which is in a Guzhangian slope limestone/shale in the Huayansi Formation of China.
  • Aspidagnostus taoyuanensis:

Ecology: slow-moving epifaunal detritivore

Distribution:

• Cambrian of Canada (2: Yukon collections), China (4), Kazakhstan (2), United States (1: Nevada)

Total: 9 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.


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