183,996 research outputs found
Borestus costatus Yoo
No full textBorestus costatus Yoo PI. 10 figs 1-5 Borestus costatus Yoo, 1988: 242, figs 25-28. Additional material. 3 specimens from south-east of 'Rangari' (Locality 18), 2 from Swains Gully (Locality 25), 4 from 'Marohn' (Locality 28), 3 from Glenbawn (Locality 31). Geographic distribution. 'Rangari' to Glenbawn. Geological age. Early to late Toumaisian.Published as part of Yoo, E. K., 1994, Early Carboniferous Gastropoda from the Tamworth Belt, New South Wales, Australia, pp. 63-120 in Records of the Australian Museum 46 (1) on page 80, DOI: 10.3853/j.0067-1975.46.1994.18, http://zenodo.org/record/465459
Onychochilus minutissimus Yoo 1988
No full textOnychochilus minutissimus Y00 Onychochilus minutissimus Yoo, 1988: 240, figs 12-14. Additional material. 3 specimens (F78356). Remarks. This species is extremely rare and small in size; a total of seven specimens have been recovered from the type locality, including four specimens in previous investigations (Yoo, 1988). The shells exhibit perfectly balanced adult forms with a sharp boundary between protoconch and teleoconch. This species differs from the type species O. physa Lindstrom in being much smaller in size and in lacking ornamentation.Published as part of Yoo, E. K., 1994, Early Carboniferous Gastropoda from the Tamworth Belt, New South Wales, Australia, pp. 63-120 in Records of the Australian Museum 46 (1) on page 73, DOI: 10.3853/j.0067-1975.46.1994.18, http://zenodo.org/record/465459
Stegocoelia (Stegocoelia) nodosa Yoo. Figured 1988
No full textStegocoelia (Stegocoelia) nodosa Yoo PI. 15 fig. 3 Stegocoelia (Stegocoelia) nodosa Yoo, 1988: 245, figs 67-71. Dimensions. Figured specimen (F78467): H 3.7 mm, W 1.2 mm [table omitted] Additional material. 75 specimens from 'Marohn' (Locality 28), 1 from Swains Gully (Locality 25) and 16 from south-east of 'Rangari' (Locality 18). Geographic distribution. 'Rangari' to 'Marohn'. Geological age. Middle to late Toumaisian.Published as part of Yoo, E. K., 1994, Early Carboniferous Gastropoda from the Tamworth Belt, New South Wales, Australia, pp. 63-120 in Records of the Australian Museum 46 (1) on pages 83-84, DOI: 10.3853/j.0067-1975.46.1994.18, http://zenodo.org/record/465459
Hesperiella robertsi Yoo. Apert 1988
No full textHesperiella robertsi Yoo PI. 7 fig. 8 Hesperiella robertsi Yoo, 1988: 241, figs 36-41. Additional material. 34 specimens from the type locality, 16 from various horizons at Glenbawn (Localities 29-31) and 8 from south-east of 'Rangari' (Locality 18). 1 from 'Lorrina' (Locality 23). Geographic distribution. 'Rangari' to Glenbawn. Geological age. Middle to late Tournaisian. Remarks. This species is abundant at Glenbawn, and occurs commonly at 'Rangari', but has not been recovered at Swains Gully (Locality 25). A single specimen recovered at 'Lorrina', from a stratigraphically higher horizon in the Namoi Formation, is here temporarily assigned to this species. Figured specimen (PI. 7 fig. 8) is an immature form.Published as part of Yoo, E. K., 1994, Early Carboniferous Gastropoda from the Tamworth Belt, New South Wales, Australia, pp. 63-120 in Records of the Australian Museum 46 (1) on page 78, DOI: 10.3853/j.0067-1975.46.1994.18, http://zenodo.org/record/465459
Naticopsis (Naticopsis) osbornei Yoo
No full textNaticopsis (Naticopsis) osbornei Yoo PI. 14 Figs 1-8 Naticopsis (Naticopsis) osbornei Yoo, 1988: 244, figs 65-66. Additional material. 8 specimens from 'Marohn' (Locality 28) and 1 specimen from G1enbawn (Locality 30). Geographic distribution. 'Rangari' to Glenbawn. Geological age. Middle to late Tournaisian. Remarks. Fifty specimens recovered between 'Rangari' and Glenbawn show a considerable variability in shell shape, ornamentation and callus rugae. Some forms are elongate while others seem distorted. The shape and size of callus are also variable. Specimens are usually ornamented by collabral striae which are more distinct in the last whorl. Plate 14 figure 6 shows stronger striae developed just below the suture of the last whorl.Published as part of Yoo, E. K., 1994, Early Carboniferous Gastropoda from the Tamworth Belt, New South Wales, Australia, pp. 63-120 in Records of the Australian Museum 46 (1) on pages 82-83, DOI: 10.3853/j.0067-1975.46.1994.18, http://zenodo.org/record/465459
Loxonema elegantissima Yoo 1988
No full textLoxonema elegantissima Yoo, 1988: 246, figs 84-87. Dimensions. Figured specimens (F78524) H 1.9 mm, W 0.5 mm, NW81,4; (F78523) H 1.6, W 0.5 mm, NW 7 l1z. Additional material. 50 specimens from 'Marohn' (Locality 28), one each from two horizons at Glenbawn (Localities 29 and 31). Remarks: This species occurs commonly at the type locality. Fifty two specimens recovered for this study are extremely well preserved and readily referred to this species.Published as part of Yoo, E. K., 1994, Early Carboniferous Gastropoda from the Tamworth Belt, New South Wales, Australia, pp. 63-120 in Records of the Australian Museum 46 (1) on page 93, DOI: 10.3853/j.0067-1975.46.1994.18, http://zenodo.org/record/465459
Glabrocingulum obesum Yoo 1988
No full textGlabrocingulum obesum Y00 PI. 6 figs 4-10 Glabrocingulum obesum Yoo, 1988: 241, figs 33-35. [table omitted] Additional material. 30 additional specimens of G. obesum Y00, 1988 were recovered from the type locality and east of Glenbawn Dam (Locality 30). Remarks. The figllred specimens (PI. 6 figs 6, 9, 10) appear to be immature. The specimens (PI. 6 figs 4, 5) have straight whorl profiles with smaller pleural angle, coarser ornamentation and smaller umbilicus, which appears to be relatively mature. This species differs from Glabrocingulum ornatum (Dun & Benson) in having smaller and low-spired shell.Published as part of Yoo, E. K., 1994, Early Carboniferous Gastropoda from the Tamworth Belt, New South Wales, Australia, pp. 63-120 in Records of the Australian Museum 46 (1) on page 76, DOI: 10.3853/j.0067-1975.46.1994.18, http://zenodo.org/record/465459
Araeonema microspirulata Yoo 1988
No full textAraeonema microspirulata Yoo, 1988: 243, figs 46-49. Dimensions. Holotype (F61958) H 1.2 mm, W 1.1 mm. Additional material. 73 specimens from 'Marohn' (Locality 28), 2 from Glenbawn (Locality 29) and 1 from 'Lorrina' (Locality 23). Geographic distribution. 'Lorrina' to Glenbawn. Geological age. Late Tournaisian. Remarks. This species has a very thin shell, yet is extremely well preserved. It is one of the most abundant species at the type locality. A single worn specimen recovered from the upper part of the Namoi Formation at 'Lorrina' is tentatively referred to this species.Published as part of Yoo, E. K., 1994, Early Carboniferous Gastropoda from the Tamworth Belt, New South Wales, Australia, pp. 63-120 in Records of the Australian Museum 46 (1) on page 81, DOI: 10.3853/j.0067-1975.46.1994.18, http://zenodo.org/record/465459
Hesperiella robertsi Yoo. Apert 1988
No full text<i>Hesperiella robertsi</i> Yoo <p>PI. 7 fig. 8</p> <i>Hesperiella robertsi</i> Yoo, 1988: 241, figs 36-41. <p>Additional material. 34 specimens from the type locality, 16 from various horizons at Glenbawn (Localities 29-31) and 8 from south-east of 'Rangari' (Locality 18). 1 from 'Lorrina' (Locality 23).</p> <p>Geographic distribution. 'Rangari' to Glenbawn.</p> <p>Geological age. Middle to late Tournaisian.</p> <p>Remarks. This species is abundant at Glenbawn, and occurs commonly at 'Rangari', but has not been recovered at Swains Gully (Locality 25). A single specimen recovered at 'Lorrina', from a stratigraphically higher horizon in the Namoi Formation, is here temporarily assigned to this species. Figured specimen (PI. 7 fig. 8) is an immature form.</p>Published as part of <i>Yoo, E. K., 1994, Early Carboniferous Gastropoda from the Tamworth Belt, New South Wales, Australia, pp. 63-120 in Records of the Australian Museum 46 (1)</i> on page 78, DOI: 10.3853/j.0067-1975.46.1994.18, <a href="http://zenodo.org/record/4654599">http://zenodo.org/record/4654599</a>
Palaeozygopleura obesa Yoo 1994, n.sp.
No full textPalaeozygopleura obesa n.sp. PI. 16 figs 1-4 Palaeozygopleura sp. Yoo, 1988: 238, table 2. Description. Shell small, high-spired cyrtoconoid, anomphalous. Protoconch of about 1Y2 smooth whorls, tending to be globose. Teleoconch of about 7 whorls with whorl profile of the upper surface flattened and the lower surface slightly convex; suture shallow, collabral ribs evenly spaced across the whorl and slightly opisthocyrt with transition from protoconch to teleoconch not distinct. Aperture incomplete (broken specimen). Types. Holotype (F78477) and 2 figured paratypes (F78478 -9). There are 14 additional specimens (F78476) from the type locality. Type locality. 150 m west of 'Marohn' homestead, on the Scone-Gundy roadside, 4 km south-west of Gundy, NSW (Locality 28). Stratigraphic position. In bioclastic limestone, upper part of the Dangarfield Formation. Additional material. 4 specimens from 'Rangari' area (Localities 15 and 18) and 26 from various horizons at Glenbawn (Localities 29-32). Geographic distribution. 'Rangari' to Glenbawn. [table omitted] Geological age. Middle to late Toumaisian. Etymology. Derived from the Latin obesus meaning swollen. Remarks. This is only species referred to Palaeozygopleura, characterised by its high-spired cyrtoconoid shell with smooth globose protoconch. With the additional specimens recovered between 'Rangari' and Glenbawn, Palaeozygopleura sp. Yoo (1988) is here named obesa.Published as part of Yoo, E. K., 1994, Early Carboniferous Gastropoda from the Tamworth Belt, New South Wales, Australia, pp. 63-120 in Records of the Australian Museum 46 (1) on page 84, DOI: 10.3853/j.0067-1975.46.1994.18, http://zenodo.org/record/465459
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