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Image of Tonicia atrata (G. B. Sowerby II 1840)
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Tonicia atrata (G. B. Sowerby II 1840)

Distribution ( Spanish; Castilian )

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Chile Central
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Universidad de Santiago de Chile
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Pablo Gutierrez
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Tonicia atrata ( Dutch; Flemish )

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Tonicia atrata is een keverslakkensoort uit de familie van de Chitonidae.[1] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1840 door Sowerby.

Bronnen, noten en/of referenties
  1. Schwabe, E. (2012). Tonicia atrata (Sowerby, 1840). Geraadpleegd via: World Register of Marine Species op http://www.marinespecies.org/aphia.php?p=taxdetails&id=386327
Geplaatst op:
10-03-2013
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Description

provided by Zoosystematics and Evolution
Animal of medium to large size, reaching 51 mm in examined specimens. Shell elongate-oval, moderately elevated, subcarinated dorsum. Color reddish brown to blackish purple. Head valve semicircular, with straight posterior valve margin unnotched in middle; intermediate valves broadly rectangular, with distinct protruding apex and concave posterior valve margins. Lateral area hardly elevated, but clearly indicated by faint depression in front of diagonal ridge. Jugal area weakly developed, but showing partly a more or less distinct keel, especially in the more posterior intermediate valves. Tail valve with centrally situated, forward-directed, and slightly elevated mucro, straight antemucronal area and rather steep, straight postmucronal slope. Jugal area of tail valve extending towards anterior. Tegmentum without sculpture, except for growth marks and faint radial striations on terminal valves and lateral areas. Perinotum wide and fleshy (After Schwabe et al. 2006).
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Juan Francisco Araya, Marta Esther Araya
bibliographic citation
Araya J, Araya M (2015) The shallow-water chitons (Mollusca, Polyplacophora) of Caldera, Region of Atacama, northern Chile Zoosystematics and Evolution 91(1): 45–58
author
Juan Francisco Araya
author
Marta Esther Araya

Distribution

provided by Zoosystematics and Evolution
According to Reid and Osorio (2000), this species distributes in Chile between 40°S and 54°S, at Tierra del Fuego and around the Falkland Islands. The species ranges in depth from the low eulittoral to a depth of 36 m (Schwabe et al. 2006). The record presented here (at 27°S) is now the northernmost record for this species.
license
cc-by-3.0
copyright
Juan Francisco Araya, Marta Esther Araya
bibliographic citation
Araya J, Araya M (2015) The shallow-water chitons (Mollusca, Polyplacophora) of Caldera, Region of Atacama, northern Chile Zoosystematics and Evolution 91(1): 45–58
author
Juan Francisco Araya
author
Marta Esther Araya