. Bulletin of the British Museum (Natural History), Geology. 292 CUERDA, RICKARDS & CINGOLANI. Fig. 1 Distribution of Silurian fades in the Precordillera of San Juan, Argentina. The western fades is shown around Calingasta, the central fades in the dose stipple and the eastern fades in open stipple to the right. sandstones have yielded the trilobites Calymenella (Eohomalonotus) villicumensis Baldis & Blasco and Dalmanitina sudamericana Baldis & Blasco (Baldis & Blasco 1974) and the brachio- pods Fascifera punctata, Arenorthis cuyana, Villiscundella muozetici, Bagnorthis garrigo
. Bulletin of the British Museum (Natural History), Geology. 292 CUERDA, RICKARDS & CINGOLANI. Fig. 1 Distribution of Silurian fades in the Precordillera of San Juan, Argentina. The western fades is shown around Calingasta, the central fades in the dose stipple and the eastern fades in open stipple to the right. sandstones have yielded the trilobites Calymenella (Eohomalonotus) villicumensis Baldis & Blasco and Dalmanitina sudamericana Baldis & Blasco (Baldis & Blasco 1974) and the brachio- pods Fascifera punctata, Arenorthis cuyana, Villiscundella muozetici, Bagnorthis garrigoui and Kjaerina (Neokjaerina) florentina (all Levy & Nullo 1977). The Silurian commences with argillaceous sandstones and has a palynomorph assemblage referable to the Llandovery, which Volkheimer et al. (1980) list as Ancyrochitina sp., A. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). London : BM(NH)
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