WebTheba geminata (Mousson, 1957) and Theba ar inagae Gittenberger and Ripken, 1987 (Fig. 2), dimension that might validate limiting simi larity as an evolutionary process rather than a transient ecological phenomenon. And al though paleoecologists have documented possible cases of limiting similarity in deep time-in such diverse groups as Ordovician WebStable isotopes of oxygen and carbon extracted from fossil land snail shells have been used increasingly to interpret past environments. To evaluate the utility of this approach for low-latitude oceanic islands, populations of the modern helicid land snail Theba geminata – a species also abundant in the Quaternary fossil record of the region – were sampled at ten …

(PDF) Three species of Theba (Gastropoda: Helicidae

WebFigs. 19, 20. Records of Theba impugnata (stars) and T. geminata (dots) on Lanzarote [19] and Fuerteventura [20], illustrating the occurrence of T. impugnata on Isla Graciosa and N. Lanzarote only (nearly always sympatric with T. geminata). Theba subdentata (Férussac, 1821) This polytypic species is found in western Morocco (figs. 1, 30). WebApr 15, 2008 · Stable isotopes of oxygen and carbon extracted from fossil land snail shells have been used increasingly to interpret past environments. To evaluate the utility of this approach for low-latitude oceanic islands, populations of the modern helicid land snail Theba geminata – a species also abundant in the Quaternary fossil record of the region – … gilly\\u0027s custard

Mollusca: Gastropoda: Helicidae), Systematics and Distribution

WebName: Theba geminata: Family: LANDSNAILS – Helicidae: Author: Mousson, 1857: SKU: 85705: Size: 18.22 mm: Locality: Taiche, Lanzarote Island, Canary Islands, Spain. WebGeographic Range: T. geminata is a common species-complex on the Canary Islands. On Lanzarote, at least two species exist under that taxon name, one of them is yet … fugitive nights: danger in the desert movie