Upper Belen Fmn., Phacopina aspera bed, La Paz Province, Bolivia (Devonian of Bolivia)

Also known as Lager der Ph. aspera

Where: La Paz, Bolivia (15.5° S, 68.0° W: paleocoordinates 63.8° S, 83.5° W)

• coordinate based on political unit

• basin-level geographic resolution

When: Upper Belen Member (Belen Formation), Emsian (407.6 - 393.3 Ma)

• Age call is based on Isaacson and Sablock (1987) (PBDB ref. 9680). Nested within Ph. aspera bed is the Metacryphaeus cornutus bed.

• member-level stratigraphic resolution

Environment/lithology: marine; sandstone and shale

• Facies complex is described, including sandstones, shales, and siltstones.

Primary reference: R. Wolfart. 1968. Die Trilobiten aus dem Devon Boliviens und ihre Bedeutung fuer Stratigraphie und Tiergeographie. Beihefte zum Geologischen Jahrbuch 74:5-201 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 37055: authorized by Michael Foote, entered by Michael Foote on 26.02.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Focus of monograph is trilobites. Other taxa sometimes mentioned as well.
Show authors, comments, and common names
Trilobita
 Phacopida - Acastidae
Acastoides verneuili
 Phacopida - Calmoniidae
Malvinella haugi, Metacryphaeus cornutus n. sp., Metacryphaeus boulei, Metacryphaeus sp., Metacryphaeus venustus n. sp., Metacryphaeus tuberculatus, Calmonia curvioculata n. sp., Schizostylus brevicaudatus, Bouleia dagincourti, Phacopina (Vogesina) aspera n. sp.
Metacryphaeus cornutus n. sp. trilobite
Metacryphaeus sp. Reed 1907 trilobite
Metacryphaeus venustus n. sp. trilobite
Calmonia curvioculata n. sp. trilobite
Phacopina (Vogesina) aspera n. sp. trilobite
 Phacopida - Phacopidae
Phacops salteri
Phacops salteri trilobite
 Proetida - Aulacopleuridae
Otarion dereimesi
 Lichida - Lichidae
Acanthopyge balliviani
Acanthopyge balliviani Kozlowski 1923 trilobite
Cephalopoda
 Orthocerida -
Orthocerida indet.
Crinoidea
  -
Crinoidea indet.
Crinoidea indet. Miller 1821 Sea lily
Brachiopoda
  -
Brachiopoda indet.
Brachiopoda indet. Cuvier 1805
Scyphozoa
 Conulariida -
Conulariida indet.
Conulariida indet. Miller and Gurley 1896 jellyfish