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The subspecies name, marginata, derives from the Latin for "border" and refers to the red markings on the outer (marginal) part of the upper shell; dorsalis is from the Latin for "back", referring to the prominent dorsal stripe; and bellii honors zoologist Thomas Bell, a collaborator of Charles Darwin.
The outer marginal haemal duct is present in this form presumably in all "regular" sea urchins.
In the Spatangoida, the outer marginal haemal duct is located on the aboral side of the gastric caecum.
Another striking similarity was the almost exactly identical location of the inner and outer marginal sinus of the haemal system in both specimens.
The stomach is well integrated into this system and is supplied by an inner as well as outer marginal haemal duct.
Besides the outer marginal zone, corresponding to the molecular layer, that did not show immunolabelling, a thick layer formed mainly by pyramidal neurons of different sizes, some of them showing intense neurofilament expression, was present.
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As Site U1427 is on the outer margin of the marginal terrace (~ 330 mbsl), terrigenous input at this site is likely to be strongly controlled by sea-level variability.
Site U1427 is located in the south-central part of the JS on the outer margin of the marginal terrace off Tottori (35°57.92′N, 134°26.06′E, 330 mbsl), ~ 110 km south of Site U1426 (Fig. 1).
Dark light color alternations are present at six of the seven sites drilled during Expedition 346 (Sites U1422 U1426 and U1430), and they occupy water depths of 990 3430 mbsl, whereas the succession at Site U1427 on the outer margin of a marginal terrace (~ 330 mbsl) shows gradual and subtle color changes (Fig. 1).
Marginal dewlaps have a single color that covers most of the dewlap (∼90%) and a second color along the outer margin representing about 10%of the total area.
Middle-class Muslims in crucial Midlands and outer London marginals, who might otherwise have voted Tory, may stay at home or vote Lib Dem or Labour.
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