Tanispermum, a new genus of hemi-orthotropous to hemi-anatropous angiosperm seeds from the Early Cretaceous of eastern North America

Friis EM, Crane PR & Pedersen KR
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Friis, E. M., Crane, P. R., & Pedersen, K. R. (2018). Tanispermum, a new genus of hemi-orthotropous to hemi-anatropous angiosperm seeds from the Early Cretaceous of eastern North America. American Journal of Botany, 105(8), 1369-1388. https://doi.org/10.1002/ajb2.1124