The Ypresian is the first stage of the EoceneEpoch. It spans the time between 55.8 ± 0.2 Ma and 48.6 ± 0.2 Ma (million years ago). The stage is named after Ypres, Belgium. The famous Messel shales in Germany are from this age. Faunal stages are a subdivision of geologic time used primarily by paleontologists who study fossils rather than by geologists who study rock formations. ... The Eocene epoch (56-34 MYA) is a major division of the geologic timescale and the second epoch of the Palaeogene period in the Cenozoic era. ... The word epoch can mean either an interval of time, or a particular point in time used as a reference point. ... Mega-annum, usually abbreviated as Ma, is a unit of time equal to one million years. ... The Bellfry of Ypres Ypres (French, generally used in English;1 Ieper official name in the local Dutch) is a municipality located in Flanders, one of the three regions of Belgium, and in the Flemish province of West Flanders. ...
In Hampshire and the Isle of Wight the Ypresianstage (formerly known as the early or Lower Eocene) is represented by approximately 100 metres of sands and clays, collectively known as the Thames Group.
The Ypresianstage is present in the sea cliff at Whitecliff and Alum Bays and underlies the northern part of the Isle of Wight.
The fossil fauna of the Ypresianstage is dominated by invertebrates, particularly molluscs.
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