juvenile portrait tepida
This juvenile has only a few chambers, and is only beginning to show the distinctive coiled pattern of the adult. The genus is named after Ammon, the ram-headed Egyptian god. Sample collected at Hamble Estuary, Hampshire, England. Image courtesy of Elisabeth Alve, University of Oslo. Originally published in the Journal of Foraminiferal Research 31:1; used with permission.
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Ammonia beccarii
From the collection
star*sand: The micro*scope foraminifera site
| Description of Ammonia beccarii: Test trochoid, with convex dorsal side and
spirally arranged chambers; on the ventral side only the
last coil with an open umbilical slit and wart-like orna-
mentation is visible.
Widely distributed, one of the most abundant spe-
cies in biotopes with reduced mineralization. The test shape in A. beccarii is dependent on ecological
factors; |
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