p. 1
Facsimile
Transcription
Status: Complete
Fam. Cyathophyllidea
Genus Streptelasma Hall-Paleontology of New York Vol. 1 p 17 (1847)
Turbinate, gradually or abruptly expanding above; form like Cyathophyllum; terminal cup more or less deep; lamelloe vertical or longitudinal, more or less spirally twisted together when meeting in the centre.
*Greek streptos, twisted, and plasma, lamellae.
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