JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org.. Here we provide new fossil evidence that expands our understanding of the paleobiogeographic history and evolution of this family.Methodology. Fossil endocarps and wood were compared with extant relatives of the family. Transverse and longitudinal sections of fossil and modern fruits were studied anatomically and morphologically.Pivotal results. Fruits of the new species, Duckesia berryi sp. n., from the Oligocene of Pacific coastal Peru (ca. 30-28.5 Ma), provide the earliest fossil evidence of Duckesia-the genus is now confined to Amazonia. We also document the earliest fossil fruit record for Sacoglottis tertiaria, from the early Oligocene (ca. 33.9-28.4 Ma) of Puerto Rico, and a new occurrence of Vantanea cipaconensis fruits, from the late Miocene of Panama (ca. 9-8.5 Ma). The new fossil wood, Humiriaceoxylon ocuensis gen. et. sp. n., from the late Eocene (ca. 37.2-33.9 Ma) of Ocú , Panama, confirms that this family was represented by large trees anatomically consistent with the extant genera.Conclusions. Humiriaceae originated in the Neotropics, with the oldest-known occurrences being fruits of Lacunofructus cuatrecasana and wood of H. ocuensis from the late Eocene of Panama. The family was generically diverse and widely distributed geographically across northern South America and Central America by the early Miocene. The new fossils also provide further evidence of regional extinctions within the Neotropics; extirpation of particular genera from Central America, the Caribbean, and coastal Peru indicate that Neogene orogenic and climatic events had an important effect on the modern-day distribution of the family.
Reexamination of Saccoglottis kayseri (Schindehütte) Kirchheimer from the Miocene tuff of the Eichelskopf southeast of Homberg an der Efze in northern Hessen, Germany, indicates that the species was incorrectly attributed to Humiriaceae. The large ovoid fruits are 6‐ and 7‐valved capsules bearing numerous seeds in parietal position. The outer surface is hexagonally or heptagonally ridged. Each valve of the capsule bears a broad, ventral longitudinal band that is densely punctate indicating the position of numerous seeds. These characters point to affinities with the Salicaceae s.l. (incl. most former Flacourtiaceae), and match particularly well with Itoa L., which is distributed today in southern China and eastern Malesia. However, the fruit valves appear to separate only from the apical end, rather than both from base and apex which is a feature of fruits in the Itoa‐Carrierea‐Poliothyrsis group. We treat the fruits as a new genus of Salicaceae, Schindehuettea gen. nov. under the binomial Schindehuettea kayseri (Schindehütte) Manchester. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.