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Transcription
Ordovician.
29 ft.
1 ft thin bedded Tetradium.
7 ft clayey limestone.
10 ft soft clay. No fossils.
" limestone full of fossils. Top 4'
fossiferous section = 11 feet above coral bed.
Coral bed. Columnaria alvedata
Calpescia criciformis.
Ordovician fossils.
- Pleurostoma capax rare.
- Platystrophia acutiliata.
- Diexetis subquadrata
- Streph rugosa = vetusta?
- Rafinesquina alternata large.
Alev form very flat = fracta.
- Platystrophia bifurcata
- Streptelasma recticium.
- Perarea vetusta.
- Hygropiza urdista
- Strephomena ancata, small
form. Fine interwin as at Dayton.
- Byssorhchia radiata.
Siphonspira, small acute
Siphonspia turpicus plena.
- Hebutella occidentalis.
Clint m. S. of bridge.
13 feet from top of cherty layer to lowest cherty layer.
2 ft 8 in. {13 in total me of quarried clints}
bbed
12 in. layer of l. limestone
7 in. layer of l. limestone
{4 3/4 ft massive rock with calcite
5ft6in trumps, especially in lower half.
9 in. with numerous worm
borings at top. Thin banded.
Clayey rock, soft, Tetradium.