Fossil semi-endophytic species of Lithophyllum (Corallinaceae, Rhodophyta) from Tahiti, including L. kenjikonishii sp. nov., and their taphonomic signatures

Autor:	Davide Bassi, Yasufumi Iryu, William J. Woelkerling
Rok vydání:	2013
Předmět:	Conceptacle Taphonomy biology Lithophylloideae Corallinaceae Plant Science Aquatic Science biology.organism_classification Thallus Paleontology Botany Period (geology) Lithophyllum Hydrolithon onkodes
Zdroj:	Phycologia. 52:387-397
ISSN:	2330-2968 0031-8884
DOI:	10.2216/13-129.1
Popis:	Fossil specimens of two semi-endophytic species of Lithophyllum, L. kenjikonishii sp. nov. and L. cuneatum (Corallinaceae, Rhodophyta), were discovered in thin sections of ocean floor cores of the last deglacial period (c. 20,000–10,000 years before present) obtained from Tahiti, French Polynesia, during Expedition 310 of the Integrated Ocean Drilling Program. Detailed morphological–anatomical accounts of both species are provided, and their placement in Lithophyllum and the subfamily Lithophylloideae is discussed in relation to recent classification proposals. Lithophyllum kenjikonishii, recorded only from fossil thalli, and L. cuneatum, known from fossil and nonfossil thalli, are readily distinguished in tetrasporangial conceptacle pore canal anatomy and on differences in spermatangial conceptacle chamber anatomy. Both species are semi-endophytic in Hydrolithon onkodes, another species of Corallinaceae. Taphonomic signatures evident in thin sections suggest that the occurrence of L. kenjikonishii, L. cu...
Databáze:	OpenAIRE
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