Fossil remains of sea-dwelling organisms, particularly fossilized shells or marine creature remains.
From Greek 'hals' (salt/sea) + 'seris' (related to drying/preservation). The '-ite' suffix denotes a fossil or mineral. This paleontological term emerged in the 19th century.
Geologists dug up fossils that were clearly sea creatures in landlocked areas—haliserites proved that ancient oceans covered places that are now deserts and mountains!
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