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Melanchra persicariae
find out more... Dot Moth 3 Copyright: Ben Sale

Essex Field Club
Essex Field Club
registered charity
no 1113963
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EFC Centre at Wat Tyler Country ParkWe are open today

We are normally open to the public on Saturdays, Sundays and bank holidays 11am-4pm, check. We are also open on Wednesdays 10am-4pm.
Spring recording Record your Robin Record Common Frog Rana temporaria
Record Alexanders Smyrnium olusatrum Record Tawny Mining Bee Andrena fulva
Record Dark-edged Bee Fly Bombylius major
Record Spring Flower Bee Anthophora plumipes
Record cuckoo bee Melecta albifrons

Geology Site Account

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Wix bypass (excavations for), WIX, Tendring District, TM148279, Historical site only

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Historical site only. Excavations for the A120 Wix bypass in 1997.


The London Clay Sea was home to a large number of species but perhaps the most curious was the pearly nautilus, an animal with a spiral chambered shell, the descendants of which now live in the southern Pacific and Indian oceans. A very fine fossil nautilus from the London Clay was donated to Colchester Natural History Museum in 1977 and is understood to have been found during the building of the A120.

There is a likely looking cutting at TM 148 279 (south of Wix Lodge) but the museum have no precise locality. Roger Hewitt, a specialist in London Clay nautiloids, has identified it as Euciphocera regule from the London Clay (Division B1 Isselicrinus horizon) (a fragment of a stem of the crinoid Isselicrinus is present in the aperture of the shell).

A splendid fossil nautilus from the London Clay in Colchester Natural History Museum; found during excavations for the Wix bypass in 1977 . Photo © G. Lucy


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