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Arkell.1956.Jurassic..

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TITHONIAN AND UPPER<br />

KIMERIDGIAN<br />

BRITISH<br />

SOMALILAND<br />

Gawan Limestone<br />

with Anavirgatites<br />

MIDDLE KIMERIDGIAN Hybonoticeras beds of<br />

Daghani Shales<br />

LOWER KIMERIDGIAN Lower Daghani Shales<br />

Wanderer Limestone<br />

UPPER OXFORDIAN<br />

(Bimammatum Z.)<br />

UPPER OXFORDIAN<br />

(Transversarium Z.)<br />

| Gahodleh Shales?<br />

LOWER OXFORDIAN Upper Bihen Limestone<br />

p.p.?<br />

UPPER CALLOVIAN<br />

MIDDLE CALLOVIAN<br />

EAST AFRICA<br />

TABLE 16.—EAST AFRICA:<br />

HARRAR JUBALAND<br />

Virgatosphinctes beds,<br />

Tug Terfa<br />

Subplanites and<br />

Hybonoticeras beds,<br />

Tagfidaedi<br />

Aspidoceras and<br />

Idoceras beds near<br />

Harrar<br />

Ringsteadia beds and<br />

Atshabo Perisphinctes<br />

beds<br />

Diredaua Perisphinctes<br />

beds<br />

Idoceras beds<br />

Daua valley<br />

Perisphinctes beds<br />

Peltoceratoides and<br />

Euaspidoceras beds<br />

Daua valley<br />

LOWER CALLOVIAN Macrocephalus beds<br />

Anole Issa<br />

BATHONIAN Lowest Bihen<br />

Limestone<br />

UPPER BAJOCIAN<br />

MIDDLE BAJOCIAN<br />

LOWER BAJOCIAN<br />

UPPER TOARCIAN<br />

Coral limestones with<br />

Lower Bihen echinids<br />

Eligmus limestones ?<br />

LOWER TOARCIAN Bouleiceras bed Bouleiceras bed<br />

UNDATED BASAL BEDS Adigrat Sandstone Adigrat Sandstone Lugh Series<br />

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