Sao hirsuta Barrande 1846
- Dataset
- Biostratigraphy and taxonomy of polymerid trilobites of the Manuels River Formation (Drumian, middle Cambrian), Newfoundland, Canada
- Rank
- SPECIES
Classification
- kingdom
- Animalia
- phylum
- Arthropoda
- class
- Trilobita
- order
- Ptychopariida
- family
- Ptychopariidae
- genus
- Sao
- species
- Sao hirsuta
description
(Fig. 7)
description
DESCRIPTION The cranidium is 7.9 mm wide and 5.4 mm long. The glabella is 3.0 mm wide and 3.3 mm long. It is well-preserved as an internal cast and partly covered with sediment. The longitudinal glabellar furrow is not straight axially but slightly tending to the left posterior end of the glabella.
diagnosis
DIAGNOSIS. — As for the genus (Šnajdr 1958; Laibl et al. 2014).
discussion
REMARKS The ontogenetic development of the genus Sao and its species Sao hirsuta is well known (Warburg 1925). According to Šnajdr (1990), S. hirsuta has 22 synonyms which is one of the largest number of synonyms. For detailed list of synonyms, discussion and description of the species see Šnajdr (1958). This work follows his conclusions except for the works mentioned and added above. Sao hirsuta is common in the Czech Republic (e. g., Šnajdr 1958).
distribution
OCCURRENCE. — This is the first report of Sao hirsuta from eastern Newfoundland, Canada, where it is documented from the Paradoxides davidis Zone (Fig. 2). Elsewhere, the species is known from Europe where it was documented from the Czech Republic (Eccaparadoxides pusillus Zone; e. g., Šnajdr 1958), Spain (Gil Cid 1982; Gozalo et al. 1994), and Germany (Wurm 1928; Sdzuy 2000).
materials_examined
LECTOTYPE. — Specimen NM L 12525 (former Br- 184 from the SBNM collection Barrande), National Museum, Prague, Czech Republic, originally figured by Barrande (1852 a) and designated as the lectotype by Šnajdr (1958). From the Buchava Formation, Skreyje Member, Eccaparadoxides pusillus Zone from Skryje- Týřovice Basin, Bohemia, Czech Republic
materials_examined
MATERIAL EXAMINED. — One cranidium of Sao hirsuta (NFM F- 3420). Collected at 15.68 m (Fig. 2) of the Manuels River Formation, type locality, Conception Bay South, Newfoundland, Canada.
Name
- Synonyms
- Bailiella aequalis (Linnarsson 1882)
- Homonyms
- Sao hirsuta Barrande 1846