Sao hirsuta Barrande, 1846

Unger, Tanja, Hildenbrand, Anne, Stinnesbeck, Wolfgang & Austermann, Gregor, 2022, Biostratigraphy and taxonomy of polymerid trilobites of the Manuels River Formation (Drumian, middle Cambrian), Newfoundland, Canada, Geodiversitas 44 (33), pp. 1051-1087 : 1062-1063

Sao hirsuta Barrande, 1846

( Fig. 7 )

Sao hirsuta Barrande, 1846: 13 . — Roemer 1876: pl. 1, figs 8a- e. — Woodward 1905: fig. 1. — Wurm 1928: 38, pl. 5, figs 11a, b; 1928: 38, figs 12a, b. — Whittington 1957: 937-940, pl. 115, figs 21, 22; pl. 116, figs 14-21; 1988: 591, 592, figs 13A-D; pl. 53, figs 5-7; 1992: pl. 35, figs A-I; pl. 36, figs A-D; pl. 37. — Šnajdr 1958: 205-214, figs 44.1-27, 45; pl. 42, figs 1-35; pl. 44, figs 1-25; pl. 45, figs 1-24 (see this work for further synonyms prior to 1958); 1990: 102, unnamed fig. p. 37; unnamed fig. upper right corner p. 45; unnamed fig. p. 103. — Harrington et al. 1959: figs 88A- I, 204.13a, b. — Horný & Bastl 1970: pl. 4, fig. 4. — Gil Cid 1982: 23, 24, figs 2a-e; pl. 1, figs 3-5. — Fatka 1990: unnamed fig. p. 16, unnamed fig. p. 17; 2011: figs 17.1-5, 7. — König 1992: pl. 1, fig. 3. — Gozalo et al. 1994: 48. — Sdzuy 2000: 310, pl. 5, figs 7-12. — Geyer 2010: 84, figs 12, 13. — Laibl 2012: 19-22, figs 6, 7; pl. 1, figs A-L; pl. 2, figs A-L; pl. 3, figs A-L; pl. 4, figs A-H; pl. 5, figs A-J; pl. 6, figs A-H; 2017: figs 4E-G. — Laibl et al. 2014: 297-302, figs 4A-L, 5A-L, 6A-F, 8A-F. — Fatka et al. 2015: fig. 4E.

Sao aff. hirsuta – Gozalo et al. 1994: 48-50, pl. 1, figs 2-6; pl. 2, figs 1-5.

LECTOTYPE. — Specimen NM L 12525 (former Br-184 from the SBNM collection Barrande), National Museum, Prague, Czech Republic, originally figured by Barrande (1852a) and designated as the lectotype by Šnajdr (1958). From the Buchava Formation, Skreyje Member, Eccaparadoxides pusillus Zone from Skryje- Týřovice Basin , Bohemia, Czech Republic

DIAGNOSIS. — As for the genus ( Šnajdr 1958; Laibl et al. 2014).

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 .

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).

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.

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).

Figures

FIG. 7. —Sao hirsuta Barrande,1846,internal cast of a cranidium (NFM F-3420 from 15.68 m). Scale bar: 1 mm.

FIG. 2. — Lithology of the type locality of the Manuels River Formation, range chart of the here described species. Agnostid biozones from Hildenbrand et al. (2021) and polymerid biozones from Howell (1925).