Sigillaria Alternaus
Facsimile
Transcription
Status: Complete
Sigillaria alternaus, Lindley + Hutton.
Foss. Fl. 1 p 159 t 6.
Lesq. Geol Penn 2 p 873
Ribs broad, equal; scars two,
approximate, elliptical, with small
vascular scars in the middle
Coal measures
Greensburg Pa
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