Osmotrophy in modular Ediacara organisms
نویسندگان
چکیده
منابع مشابه
From the Cover: Osmotrophy in modular Ediacara organisms.
The Ediacara biota include macroscopic, morphologically complex soft-bodied organisms that appear globally in the late Ediacaran Period (575-542 Ma). The physiology, feeding strategies, and functional morphology of the modular Ediacara organisms (rangeomorphs and erniettomorphs) remain debated but are critical for understanding their ecology and phylogeny. Their modular construction triggered n...
متن کاملNew Ediacara fossils preserved in marine limestone and their ecological implications
Ediacara fossils are central to our understanding of animal evolution on the eve of the Cambrian explosion, because some of them likely represent stem-group marine animals. However, some of the iconic Ediacara fossils have also been interpreted as terrestrial lichens or microbial colonies. Our ability to test these hypotheses is limited by a taphonomic bias that most Ediacara fossils are preser...
متن کاملPatterns of morphological integration in marine modular organisms: supra-module organization in branching octocoral colonies.
Despite the relative simplicity of their modular growth, marine invertebrates such as arborescent gorgonian octocorals (Octocorallia: Cnidaria) generate complex colonial forms. Colony form in these taxa is a consequence of modular (polyp) replication, and if there is a tight integration among modular and supramodular traits (e.g. polyp aperture, inter-polyp spacing, branch thickness, internode ...
متن کاملMaternal Recto-Vaginal Organisms and Surface Skin Colonization in Infants
Background: Early-onset sepsis is a common cause of neonatal mortality and mainly occurs due to the colonized microorganisms in the maternal recto-vaginal area. The present study aimed to evaluate the effects of maternal risk factors on recto-vaginal colonization and transmission rate of micro-flora from mothers to infants. Methods: Upon admission, two samples were obtained from the distal thi...
متن کاملBranching and Self-Organization in Marine Modular Colonial Organisms: An Ecological Approach
(1) Department of Biological Sciences, 109 Cooke Hall, University at Buffalo (The State University of New York), Buffalo, NY 14260, USA. [email protected]; [email protected] phone: 716-645-2881; fax: 717-645-2975 (2) Departamento de Matematicas, Universidad Nacional de Colombia, Bogotá, Colombia. [email protected] phone 011-571-2692265; fax 011-571-2697853 (3) Department of Geography, Univer...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2009
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.0904836106