TY - JOUR
T1 - Ginkgoites patagonica (Berry) comb. nov. from the eocene of patagonia, last ginkgoalean record in South America
AU - de Seoane, Liliana Villar
AU - Rubén Cúneo, N.
AU - Escapa, Ignacio
AU - Wilf, Peter
AU - Gandolfo, María A.
N1 - Publisher Copyright:
© 2015 by The University of Chicago. All rights reserved.
PY - 2015
Y1 - 2015
N2 - Premise of research. The ginkgophytes are an ancient group of gymnosperms with a long history starting during the late Paleozoic and reaching the present with the unique species Ginkgo biloba L. In order to better characterize the early and middle Eocene (ca. 52.2 and 47.7 Ma) leaf species Ginkgo patagonica Berry from northwest Patagonia, Argentina, new specimens were studied, focusing on their morphological and anatomical characters. Methodology. The specimens were studied with LM, epifluorescence, SEM, and TEM. Pivotal results. The diagnosis of the species Ginkgoites patagonica comb. nov. is enlarged to include anatomical and ultrastructural epidermal characters. Herein, the species Ginkgo patagonica is shown to have characteristics that clearly separate it from the genus Ginkgo L., and it is therefore recombined to the genus Ginkgoites Seward. Conclusions. Eocene Ginkgoites patagonica was present in plant communities, and it is the last representative of a still poorly understood southern ginkgophyte lineage that was distinct from the ancestors of G. biloba of the Northern Hemisphere.
AB - Premise of research. The ginkgophytes are an ancient group of gymnosperms with a long history starting during the late Paleozoic and reaching the present with the unique species Ginkgo biloba L. In order to better characterize the early and middle Eocene (ca. 52.2 and 47.7 Ma) leaf species Ginkgo patagonica Berry from northwest Patagonia, Argentina, new specimens were studied, focusing on their morphological and anatomical characters. Methodology. The specimens were studied with LM, epifluorescence, SEM, and TEM. Pivotal results. The diagnosis of the species Ginkgoites patagonica comb. nov. is enlarged to include anatomical and ultrastructural epidermal characters. Herein, the species Ginkgo patagonica is shown to have characteristics that clearly separate it from the genus Ginkgo L., and it is therefore recombined to the genus Ginkgoites Seward. Conclusions. Eocene Ginkgoites patagonica was present in plant communities, and it is the last representative of a still poorly understood southern ginkgophyte lineage that was distinct from the ancestors of G. biloba of the Northern Hemisphere.
UR - http://www.scopus.com/inward/record.url?scp=84928397319&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84928397319&partnerID=8YFLogxK
U2 - 10.1086/680221
DO - 10.1086/680221
M3 - Article
AN - SCOPUS:84928397319
SN - 1058-5893
VL - 176
SP - 346
EP - 363
JO - International journal of plant sciences
JF - International journal of plant sciences
IS - 4
ER -