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The fossil pollen record of Hamamelidaceae in the Iberian Peninsula

Authors
  • Casas-Gallego, Manuel1
  • Barrón, Eduardo2
  • 1 Broadway Court, Mostyn Avenue, Llandudno, LL30 1SA, UK , Llandudno (United Kingdom)
  • 2 Museo Geominero, Instituto Geológico y Minero de España (IGME-CSIC), Ríos Rosas 23, Madrid, 28003, Spain , Madrid (Spain)
Type
Published Article
Journal
Plant Systematics and Evolution
Publisher
Springer Vienna
Publication Date
Jul 26, 2021
Volume
307
Issue
4
Identifiers
DOI: 10.1007/s00606-021-01772-1
Source
Springer Nature
Keywords
Disciplines
  • Original Article
License
Yellow

Abstract

In this paper we review the fragmentary fossil pollen record of Hamamelidaceae which extends back to the middle Eocene until the Early Pleistocene in the Iberian Peninsula. Records of fossil palynomorphs related to Hamamelidaceae are very scarce in the European Cenozoic, in part due to difficulty in confident identification at a generic or even familial rank. The present review contributes to improving the accuracy of identification of Cenozoic Hamamelidaceae in standard palynological studies, which should help trace its poorly understood fossil and evolutionary history. The review of all published Iberian records indicates a considerable generic diversity. At least four genera can be confidently identified. The examination of new material from the Oligocene of north-west Spain has led to the formal description of three new fossil pollen genera that are related to extant genera currently restricted geographically to Asia: Disanthuspollenites, Embolantherapollenites and Parrotiapollenites. Based on SEM analysis, a new combination of the fossil species Tricolpopollenites indeterminatus, traditionally used to designate fossil pollen related to Hamamelidaceae in Europe, is proposed. Additionally, we discuss the occurrence of pollen forms that can be tentatively attributed to Corylopsis and Fothergilla.

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