Livonian Tongue

Ordovician faunas and stratigraphy. The brachiopod faunas are often exquisitely preserved and have been documented and illustrated in considerable detail in many monographic works. Hints and Roomusoks (1997) have provided details of brachiopod distributions through the Ordovician together with a summary of previous studies. Three groups of sections have been analysed. The two East Baltic successions, characterising the North Estonian confacies belt and the Livonian Tongue... 

Figure 32.3 Taxonomic profiles through the Livonian Tongue. The local diversity, first appearances and last appearances of taxa are indicated as numbers of genera. The sea-level curve of Nestor and Einasto (1997) is indicated on the right and the position of the main bentonite is marked by asterisks.

Figure 32.5 Brachiopod shell debris as a percentage of the total skeletal debris is the Rapla section of the North Estonian Confacies belt (right) and the Engure section in the Livonian Tongue (left) (data modified from Polma, I972a,b).

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