I found one pebble of limestone from the Martin formation in Arizona that was shot through with a narrow, stick like coral that I believe is
Syringopora sp. The genera is listed by Teichert in his paper and is illustrated by Langland in his article. The calices are very narrow, 3-5mm across and clustered but not in a central mass. Think of them more as loose spaghetti. My sample is small and there is not much exposed of the sides of individual calices, so could this possibly be a form of Aulocystis?
This specimen is from the Jerome member of the Martin formation (Devonian, Fransian stage) north of Payson, AZ.
References:
Teichert, C., 1965, "Devonian Rocks and Paleogeography of Central Arizona", USGS Professional Paper 464
Langland, Jeffrey O. and Edith V., 2012, "Fauna of a 400-Million-Year-Old Coral Reef in
Arizona", Rocks and Minerals, 87:1, 40-44
Stumm, Erwin C., 1948, "Upper Devonian Compound Tetracorals from the Martin Limestone", Journal of Paleontology, Vol. 22:1, pp. 40-47
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