82,645 research outputs found
Campbellospira Yoo 1994
No full textCampbellospira sp. B PI. 5 figs 11-12 Dimensions. Figured specimen H 2.7 mm, PA 75°, NW 5l1z. Locality. Approximately 250 m west of Babbinboon Lane, in Swains Gully. 15 km south-west of Somerton, NSW (Locality 25). Stratigraphic position. 130 m above the base of the Namoi Formation.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 77, DOI: 10.3853/j.0067-1975.46.1994.18, http://zenodo.org/record/465459
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
Donaldina minutissima Yoo 1994, n.sp.
No full textDonaldina minutissima n.sp. PI. 21 figs 1-6 Donaldina sp. Yoo, 1988: 238 (table 2), figs 110-111. Description. Shell minute, slender, high-spired turriculate anomphalous. Protoconch of ll1z smooth whorls with deviated spire, the transition from protoconch to teleoconch indistinct orthocline. Teleoconch of about 8 convex whorls with early whorls smooth and later whorls ornamented with 6 evenly spaced spiral cords; whorl profile more or less symmetrically rounded; suture deep, well impressed. Aperture oval, columellar lip slightly arcuate; base rounded. [table omitted] Types. Holotype (F78517) and 3 figured paratypes (F7851O, 78518). 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. Geographic distribution. Type locality only. Geological age. Late Tournaisian. Etymology. Derived from the Latin minutissima meaning extremely small. Remarks. Six specimens recovered for this study are sufficiently well preserved to justify basing a new species. This new species resembles Donaldina filosa Yoo and Pseudoaclisina microspirulata n.sp. in having a minute, slender and tall shell with fine spiral ornament, but it differs in having a more highly deviated protoconch.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
Agnesia reticulata Yoo 1994, n.sp.
No full textAgnesia reticulata n.sp. [table omitted] PI. 8 figs 1-3 Description. Shell medium, trochiform, sinistral, moderately phaneromphalous. Protoconch coiling inward and hidden by later whorls, apex a funnel-like hole. Teleoconch conical with sunken top, whorl profile gently arched between sutures, rather deep, base gently convex, ornamentation of opisthocline collabra1 lirae and weaker spiral threads making small nodes in intersections. Selenizone relatively narrow; lower margin of selenizone on sutures with a narrower and deeper channel in the middle of the elevated selenizone; regularly spaced lunulae in the deeper channel and regularly spaced inclined streaks in outer selenizone. Aperture subcircular with inner lip thin, arcuate, deflected towards umbilicus; outer lip opisthocline from the upper suture, slit seemingly very narrow; parietal inductura lacking. [table omitted] Types. Holotype (F78406) and 3 paratypes (F78410, F78416). Type locality. Approximately 250 m west of Babbinboon Lane, in Swains Gully, 15 km south-west of Somerton, NSW (Locality 25). Stratigraphic position. In bioclastic limestone, 130 m above the base of the Namoi Formation. Geographic distribution. Type locality only. Geological age. Middle Tournaisian. Etymology. Referring to the network of obliquely intersecting linear ridges. Remarks. The shell consists of two distinct layers. Of interest is the mark of the deeper channel and the 1unulae remaining on the inner shell layer.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 79, DOI: 10.3853/j.0067-1975.46.1994.18, http://zenodo.org/record/465459
Bellerophon (Bellerophon) swainsensis Yoo 1994, n.sp.
No full textBellerophon (Bellerophon) swainsensis n.sp. PI. 1 figs 5-8 Description. Shell small, subglobular, isostrophic, anomphalous. Protoconch concealed, seemingly minute, planispiral. Teleoconch whorls involute and with largest diameter of whorl slightly less than height of spire; ornament consisting of closely spaced transverse costae and narrow selenizone; transverse costae curved back into selenizone; selenizone marked by closely spaced short lunulae. Aperture broadly crescentic, lips without flare anteriorly or laterally, but flaring somewhat backward in the umbilical region; parietal inductura covering a quarter of the last whorl, with thickening in the umbilical region. Types. Holotype (F78344) and 3 figured paratypes (F78345 -6). There are 20 unfigured additional specimens (F78347) from the type locality. Type locality. About 250 m west of Babbinboon Lane, in Swains Gully, 15 km south-west of Somerton, NSW (Locality 25). Stratigraphic position. In bioclastic limestone, 130 m above the base of the Namoi Formation. Geographic distribution. Type locality only. Geological age. Middle Tournaisian. Etymology. Referring to the geographical name of Swains Gully, Babbinboon, NSW. Remarks. This species resembles Belierophon (BeUerophon) kyndalynensis n.sp. in shell shape, but differs in having a much larger and globular form. It has a far narrower selenizone than Bellerophon (Belierophon) kyndalynensis.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 71, DOI: 10.3853/j.0067-1975.46.1994.18, http://zenodo.org/record/465459
Ceraunocochlis tenuis Yoo 1994, n.sp.
No full textCeraunocochlis tenuis n.sp. PI. l7 figs 11-13 Description. Shell very small, high-spired with many whorls, thin, anomphalous. Protoconch of about 1Y2 smooth whorls, flattened top with strongly arched whorl profile; the transition from protoconch to teleoconch sharp and gently sinuated. Teleoconch of 7Y2 smooth whorls, whorl profile arched, suture moderately deep, deeper in neanic stage; length of whorl gradually increased with growth. Aperture D-shaped; inner lip almost straight, broad anterior notch, columellar fold obscured, parietal inductura thin; outer lip straight, strong prosocline; base pointed. Dimensions. Holotype (F78494): H 2.3 mm, W 0.5 mm, NW 9. Types. Holotype (F78494) and 1 paratype (broken). 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. Geographic distribution. Type locality only. Geological age. Late Tournaisian. Etymology. Derived from the Latin tenuis meaning thin, slender; referring to its slender shell shape.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 86, DOI: 10.3853/j.0067-1975.46.1994.18, http://zenodo.org/record/465459
Streptacis gundyensis Yoo 1994, n.sp.
No full textStreptacis gundyensis n.sp. PI. 23 figs 8-13 Description. Shell minute, high-spired, anomphalous. Protoconch of IV! whorls, deviated. Teleoconch of 5 to 6 smooth, moderately convex whorls, with faint growth lines. Aperture circular to oval, lips thin, no columellar fold. Dimensions. H W NW Holotype (F78522) 2.5 mm 0.9 mm 7 Paratypes (F78528 a) 2.1 0.8 6 (F78528 b)2.7 1.0 8 (F78531) 1.4 0.7 5 Types. Holotype (F78522) and 3 figured paratypes (F78528, 78531). Type locality. 150 m west of 'Marohn' homestead, 4 km south-west of Gundy, NSW (Locality 28). Stratigraphic position. In bioclastic limestone, upper part of the Dangarfield Formation. Geographic distribution. Type locality only. Geological age. Late Tournaisian. Etymology. Referring to the township of Gundy, New South Wales. Remarks. This species is similar to Kimina sp., in having smooth convex whorls with deviated protoconch, but Kimina sp. has a moderate umbilicus and more convex whorls with opisthocline growth lines.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 93-94, DOI: 10.3853/j.0067-1975.46.1994.18, http://zenodo.org/record/465459
Strobeus ovalis Yoo 1994, n.sp.
No full textStrobeus ovalis n.sp. PI. 18 figs 8-12 Description. Shell very small, globular fusiform, moderately thick, anompha10us. Protoconch of small with simple, smooth whorls. Teleoconch of about 3Y2 whorls. First 2 whorls of the shell small, with other whorls markedly inflated, forming a shoulder on the upper part of the third whorl; whorl profile between sutures round in early whorls and rather straight in later whorls, suture shallow, not impressed. Aperture suboval; columellar lip moderately thickened, with a strong fold at the lower end of the columellar, fold obscured by columellar lip in some specimens; anterior siphonal canal broadly rounded. [table omitted] [table omitted] Types. Holotype (F78501) and 1 figured paratype (F78498). There are 10 unfigured additional specimens (F78499) 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). Additional material. 3 figured specimens (F78500) from Glenbawn (Locality 30). Geographic distribution. Glenbawn area. Geological age. Late Toumaisian. Etymology. Derived from the Latin ovatus meaning like an egg.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 87, DOI: 10.3853/j.0067-1975.46.1994.18, http://zenodo.org/record/465459
Pseudoaclisina microspirulata Yoo 1994, n.sp.
No full textPseudoaclisina microspirulata n.sp. PI. 21 figs 7-10 Description. Shell minute, high-spired, pupiform, anomphalous. Protoconch of llh smooth whorls, deviated and submerged, transition from protoconch to teleoconch abrupt. Teleoconch of about 7 whorls with about 22 fine spiral costae in the final whorl; opisthociine growth lines cover the teleoconch; whorl profile more or less symmetrically rounded; suture deep, well impressed; base rounded. Aperture oval, columellar lip arcuate; outer lip, thin, opisthociine. Types. Holotype (F78519) and 1 figured paratype (F78520). Type locality. 150 m west of 'Marohn' homestead, on the Scone-Gundy roadside, 4 km south-west of Gundy, NSW (Locality 28). Geographic distribution. Type locality only. Geological age. Late Tournaisian. Etymology. Referring to the microspiral ornamentation of shell. Remarks. This form is characterised by densely spaced fine spiral lirae and a deviated protoconch. Pseudoaclisina turgida (Y00)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 92, DOI: 10.3853/j.0067-1975.46.1994.18, http://zenodo.org/record/465459
Glabrocingulum pustulum Yoo 1994, n.sp.
No full textGlabrocingulum pustulum n.sp. PI. 7 figs 1-4 Description. Shell small, trochiform, with 5 whorls, narrowly phaneromphalous. Protoconch simple, smooth, round. Teleoconch conical, whorl profile round in early whorls becoming rather flat in later whorls with deep suture, about 3Y2 whorls with broadly subangular periphery; ornamentation of sharp spiral lirae bearing nodes where crossed by prosocline collabral threads; ornamentation below selenizone is weaker. Selenizone narrow and flat to just above periphery, ornamented with curved lunulae, present from third whorl. Aperture with inner lip straight, thickened, slightly extended towards umbilicus, outer lip with gentle labral sinus culminating in a small notch. Types. Holotype (F78397), 1 figured paratype (F78398) and 10 paratypes (F78392). Type locality. Approximately 250 m west of Babbinboon Lane, in Swains Gully, 15 km south-west of Somerton, NSW (Locality 25). Stratigraphic position. In bioclastic limestone, 130 m above the base of the Namoi Formation. Additional material. 8 specimens from Oxley Highway (Locality 22-2), 2 from north-east of 'Rangari' (Locality 15), 2 from 'Marohn' (Locality 28), and 2 from Glenbawn (Localities 30 and 31). Geographic distribution. 'Rangari' to Glenbawn. Geological age. Middle to late Tournaisian. Etymology. Referring to the nodes covering the shell surface. Remarks. This species differs from G. obesum Y00 in having a conical shell with a narrower umbilicus, and a different pattern of the selenizone ornamentation. Glabrocingulum sp. has a low spired shell with round and inflated whorl profile, while G. pustulum n.sp. has rather flat whorl profile with subangular periphery.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
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