Published May 7, 2019 | Version v1
Taxonomic treatment Open

Balnibarbi erugata subsp. erugata erugata Fortey 1974

Description

Balnibarbi erugata erugata Fortey, 1974 Figure 2A–D, E

Balnibarbi erugata Fortey, 1974: 31, pl. 5, fig. 1-10.

HOLOTYPE: Cranidium, PMO NF 3016 (figured in Fortey, 1974: pl. 5, fig. 1-3).

TYPE LOCALITY: Profilstranda, Olenidsletta Member, Valhallfonna Formation, Ny Friesland, Spitsbergen, Svalbard.

STRATIGRAPHIC RANGE: Throughout trilobite zone V 1c and the very beginning of V 2a (Fortey, 1980). These zones coincide with the upper Oepikodus evae and lower Oepikodus intermedius conodont zones, and the Didymographtus protobifidus graptolite zone within the upper Floian (fig. 1; see also Kröger et al., 2017).

DIAGNOSIS: Balnibarbi erugata subspecies with relatively short (sag.) preglabellar field (<0.35 length of glabella) and fine granulation present on glabella, axial, palpebral, and posterior border furrows, and on frontal area adjacent to anterior border furrow.

Notes

Published as part of Hopkins, Melanie J., 2019, Phylogenetic analysis and revision of the trilobite subfamily Balnibarbiinae (Olenidae), pp. 1 in American Museum Novitates 2019 (3928) on page 1, DOI: 10.1206/3928.1, http://zenodo.org/record/5369854

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Linked records

Additional details

Biodiversity

Family
Olenidae
Genus
Balnibarbi
Kingdom
Animalia
Order
Ptychopariida
Phylum
Arthropoda
Scientific name authorship
erugata Fortey
Species
erugata
Taxon rank
subSpecies
Taxonomic concept label
Balnibarbi erugata subsp. erugata Fortey, 1974 sec. Hopkins, 2019

References

  • Fortey, R. A. 1974. The Ordovician trilobites of Spitsbergen. I. Olenidae. Norsk Polarinstitutt Skrifter 160: 1 - 129.
  • Fortey, R. A. 1980. The Ordovician trilobites of Spitsbergen. III. Remaining trilobites of the Valhallfonna Formation. Norsk Polarinstitutt Skrifter 171: 163.
  • Kroger, B., S. Finnegan, F. Franeck, and M. J. Hopkins. 2017. The Ordovician succession adjacent to Hinlopenstretet, Ny Friesland, Spitsbergen. American Museum Novitates 3882: 1 - 28.