1 resultado para Alabama claims.
em Plymouth Marine Science Electronic Archive (PlyMSEA)
Filtro por publicador
- Repository Napier (1)
- Aberystwyth University Repository - Reino Unido (8)
- Academic Archive On-line (Stockholm University; Sweden) (1)
- Adam Mickiewicz University Repository (8)
- Aquatic Commons (19)
- Archive of European Integration (6)
- Archivo Digital para la Docencia y la Investigación - Repositorio Institucional de la Universidad del País Vasco (13)
- Aston University Research Archive (8)
- Biblioteca Digital de la Universidad Católica Argentina (9)
- Biblioteca Digital de Teses e Dissertações Eletrônicas da UERJ (44)
- Bibloteca do Senado Federal do Brasil (1)
- Biodiversity Heritage Library, United States (6)
- Blue Tiger Commons - Lincoln University - USA (1)
- BORIS: Bern Open Repository and Information System - Berna - Suiça (8)
- Boston University Digital Common (7)
- Brock University, Canada (6)
- Bucknell University Digital Commons - Pensilvania - USA (2)
- CaltechTHESIS (2)
- Cambridge University Engineering Department Publications Database (5)
- CentAUR: Central Archive University of Reading - UK (12)
- Center for Jewish History Digital Collections (8)
- Chinese Academy of Sciences Institutional Repositories Grid Portal (2)
- Cochin University of Science & Technology (CUSAT), India (1)
- Coffee Science - Universidade Federal de Lavras (1)
- CORA - Cork Open Research Archive - University College Cork - Ireland (10)
- Cornell: DigitalCommons@ILR (1)
- Dalarna University College Electronic Archive (1)
- Deakin Research Online - Australia (27)
- Digital Commons - Michigan Tech (1)
- Digital Commons @ DU | University of Denver Research (2)
- Digital Commons at Florida International University (4)
- DigitalCommons@The Texas Medical Center (3)
- DigitalCommons@University of Nebraska - Lincoln (3)
- Digitale Sammlungen - Goethe-Universität Frankfurt am Main (1)
- DRUM (Digital Repository at the University of Maryland) (3)
- Duke University (11)
- eResearch Archive - Queensland Department of Agriculture; Fisheries and Forestry (5)
- Fachlicher Dokumentenserver Paedagogik/Erziehungswissenschaften (1)
- Gallica, Bibliotheque Numerique - Bibliothèque nationale de France (French National Library) (BnF), France (1)
- Greenwich Academic Literature Archive - UK (9)
- Harvard University (2)
- Helda - Digital Repository of University of Helsinki (51)
- Indian Institute of Science - Bangalore - Índia (16)
- Massachusetts Institute of Technology (1)
- Memoria Académica - FaHCE, UNLP - Argentina (3)
- Ministerio de Cultura, Spain (1)
- National Center for Biotechnology Information - NCBI (1)
- Nottingham eTheses (1)
- Plymouth Marine Science Electronic Archive (PlyMSEA) (1)
- Portal de Revistas Científicas Complutenses - Espanha (1)
- Publishing Network for Geoscientific & Environmental Data (2)
- QSpace: Queen's University - Canada (1)
- QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (15)
- Queensland University of Technology - ePrints Archive (326)
- Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (16)
- School of Medicine, Washington University, United States (2)
- Scielo España (1)
- South Carolina State Documents Depository (1)
- The Scholarly Commons | School of Hotel Administration; Cornell University Research (1)
- Universidad de Alicante (1)
- Universidad del Rosario, Colombia (1)
- Universidad Politécnica de Madrid (2)
- Universidade Técnica de Lisboa (1)
- Université de Montréal (1)
- Université de Montréal, Canada (1)
- University of Michigan (248)
- University of Queensland eSpace - Australia (6)
- University of Washington (2)
- WestminsterResearch - UK (2)
Resumo:
Vestimentiferan tube worms living at deep-sea hydrothermal vents and cold seeps have been considered as a clade with a long and continuing evolutionary history in these ecosystems. Whereas the fossil record appears to support this view, molecular age estimates do not. The two main features that are used to identify vestimentiferan tubes in the fossil record are longitudinal ridges on the tube's surface and a tube wall constructed of multiple layers. It is shown here that chaetopterid tubes from modern vents and seeps—as well as a number of fossil tubes from shallow-water environments—also show these two features. This calls for a more cautious interpretation of tubular fossils from ancient vent and seep deposits. We suggest that: current estimates for a relatively young evolutionary age based on molecular clock methods may be more reliable than the inferences of ancient “vestimentiferans” based on putative fossils of these worms; not all of these putative fossils actually belong to this group; and that tubes from fossil seeps should be investigated for chitinous remains to substantiate claims of their potential siboglinid affinities.