Lower Belen Fmn., Phacopina lacunafera bed, La Paz Province, Bolivia (Devonian of Bolivia)

Also known as Lager der Ph. lacunafera

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

• Age call is based on Isaacson and Sablock (1987) (PBDB ref. 9680). Nested within the lacunafera bed is the Metacryphaeus giganteus bed, and within this the Odontochile branisi 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 37054: 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.
 Phacopida - Acastidae
 Phacopida - Dalmanitidae
Odontochile branisi n. sp. trilobite
 Phacopida - Calmoniidae
 Phacopida - Phacopidae
Phacops salteri trilobite
"Pelecypoda indet." = Bivalvia
"Pelecypoda indet." = Bivalvia Linnaeus 1758 clam
Gastropoda indet. Cuvier 1797 snail
 Euomphalina - Platyceratidae
Platyceras sp. Conrad 1840 snail
 Blastoidea -
Crinoidea indet. Miller 1821 Sea lily
Brachiopoda indet. Cuvier 1805
 Conulariida -
Conulariida indet. Miller and Gurley 1896 jellyfish
 Favositida - Micheliniidae
Pleurodictyum sp. Goldfuss 1829 tabulate coral
  - Receptaculitidae
Receptaculites sp. Defrance 1827