Phylogenetics Development And Cenozoic Paleontology Of Buccinidae Mollusca
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Phylogenetics Development And Cenozoic Paleontology Of Buccinidae Mollusca
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Author : Jann Elizabeth Vendetti
language : en
Publisher:
Release Date : 2009
Phylogenetics Development And Cenozoic Paleontology Of Buccinidae Mollusca written by Jann Elizabeth Vendetti and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with categories.
The buccinid gastropods (family Buccinidae) are a species-rich clade of mostly North Pacific taxa with an abundant fossil record that dates to the Cretaceous. Here, the evolution, systematics, and biology of fossil and extant members of this family are treated using a variety of analytical and methodological approaches. In chapter one, a new fossil species of Bruclarkia, an endemic eastern Pacific buccinid from the Eocene, Oligocene, and Miocene, is described from the Astoria Formation of the Pacific Northwest. This species, B. ellenae, was discovered among fossil material of the University of California Museum of Paleontology and California Academy of Science and had been either overlooked or identified incorrectly in previous reviews of Astoria fauna. Its novel morphology was characterized based on 11 shell traits and was compared to all other Bruclarkia species in a sample size of nearly 800 individuals. The challenges inherent to correlating Pacific Northwest and California Miocene sequences are also discussed. In chapter two, all proposed Bruclarkia taxa are reviewed and re-described based on morphological characters determined from the largest examination of the genus to date. Intraspecific variation as well as autapomorphies and synapomorphies are characterized from hundreds of fossils that were measured and scored. Results suggest that of the twenty proposed Bruclarkia taxa, only seven are valid. The majority of remaining species are found to be either synonymous with valid taxa or named from type material that is insufficient for suitable description. The value of Bruclarkia acuminata, B. barkeriana, and B. gravida, as index fossils is emphasized and the paleobiogeography of these and other Bruclarkia lineages throughout California, Oregon, Washington, Vanouver Island, Canada, and Alaska is presented. In chapter three, the molecular phylogenetic systematics of 43 buccinid taxa mostly from Japanese waters is presented. Phylograms are based on Bayesian and maximum likelihood analyses of approximately 1500 base pairs from the mitochondrial gene CO1 and 625 from the nuclear gene 28S. These data suggest that: (1) Buccinidae is monophyletic, though the placement of several genera (e.g. Lirabuccinuum, Microfusus, and Solenosteira) is poorly supported, (2) the genera Busycon and Busycotypus, which have often been classified in the family Melongenidae, belong within Buccinidae, (3) the subfamilies Beringiinae, Buccininae, Busyconinae, Neptuneinae, and Photinae are monophyletic, and (4) the genera Neptunea, Buccinum, and Busycon are also monophyletic. General characters of larval development in selected buccinids are presented in a cladistic framework, which reveals two species (Kelletia kelletii and Volutharpa perryi) from different subfamilies that both have planktonic larvae. In chapter four, the early development of the California buccinid Kelletia kelletii is reviewed with new observations of larval asymmetries and feeding ability during incapsulation and after hatching. Larval shells and veligers were visualized under optical microscopy and SEM to observe fine-scale morphology at various ontogenetic stages. These observations reveal that: (1) intracapular veligers are capable of particle capture and transport but not ingestion, (2) hatching time varies between approximately 35 to 60 days depending on water conditions and temperature, (3) intracapsular larvae do not eat undeveloped eggs and/or embryos though they are present in all capsules, (4), pre-hatched veligers swim in the plankton if excapsulated at 27 days old and older, (5) within the capsule, veliger velar lobes are symmetrical but the right cephalic tentacles is larger than the left, (6) at 2.5 weeks in the plankton, both the right cephalic tentacle and right velar lobe are larger than those on the left, and (7) larval shells are brittle at emergence but calcify and grow apertural beaks and proto-siphonal canals by 2.5 weeks in the plankton. Finally, in chapter five, a new method for replicating gastropod protoconchs (larval shells) is presented. It is based on protocols used in vertebrate paleontology for molding and casting micro-mammal and other small vertebrate teeth. Molding requires clean and periostracum-free shell apexes to be covered with a dental-grade polyvinylsiloxane impression material. Casts are made from molds using tinted epoxy resin and can be re-cast multiple times from the same mold without deterioration in cast quality. The practical applications of this technique to gastropods are substantial because for many snails, the protoconch indicates larval developmental mode as either planktonic or non-planktonic. Resulting casts can be examined in small SEM machines that could not accommodate the full gastropod shell, and can be made from specimens that would be otherwise be prohibited from such studies (e.g. living specimens, shells from protected land or private collections, type specimens, etc.). Together these chapters tell the story of North Pacific buccinid evolution, speciation, and migration in selected fossil and extant lineages, early ontogeny in an unusual east Pacific buccinid, and practical methods for using protoconchs to answer questions about development in extant and extinct taxa. Future directions for research include expanding the sample size of buccinid taxa and the number of loci in molecular phylogenetic analyses, examining the shell characters and protoconchs of Bruclarkia taxa and their modern analogues to infer developmental mode and life history characteristics, and applying protoconchs replication methods (and subsequent analyses) to gastropods from diverse families- fossil and extant.
Revision Of New Zealand Cenozoic Fossil Mollusca Described By Zittel 1865 Based On Hochstetter S Collections From The Novara Expedition
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Author : Alan Glenn Beu
language : en
Publisher:
Release Date : 2012
Revision Of New Zealand Cenozoic Fossil Mollusca Described By Zittel 1865 Based On Hochstetter S Collections From The Novara Expedition written by Alan Glenn Beu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Mollusks, Fossil categories.
New Zealand Cenozoic molluscs described by Zittel in 'Palaontologie von Nue-Seeland' (1865) are revised, the plates republished, and most of the specimens reillustrated, along with comparative specimens. Hochstetter's fossil localities are clarified, based on diary entries and published descriptions, and Zittel's introduction and figure captions are translated. The locality 'several miles north of Raglan Harbour' is Te Hara Point, 6.5 km north of Raglan. Most molluscs have been interpreted correctly. However, Ostrea nelsoniana Zittel is a synonym of the late Miocene to living 'Bluff oyster' O. chilensis Philippi in Kuster, 1844, rather than an Oligocene Crassostrea species. Lentipecten hochstetteri (Zittel) is a short, wide Oligocene species (width 104-110% of height) rather than the taller, unnamed Miocene homeomorph (width 94-97% of height) to which this name is usually applied. Austrofusus conoideus (Zittel) is an Awatere Valley species (Starborogh Formation, Waipipian, Pliocene) integrading with Austrofusus allani King, 1934, Austrofusus zitteli (Suster, 1914), supposedly from Magazine Point Formation (Whaingaroan, Oligocene) at Nelson is unrecognisable, but probably also was based on a specimen of A. conoideus from Starborough Formation. Struthiolaria dolorosa King, 1934 is a synonym of S. cingulata Zittel. Cucullaea singularis Zittel, 1865 and Reredo heaphyi Zittel, 1865 are unrecognisable. A neotype is designated for Limopsis zitteli Ihering, 1907 (= L. catenata Suter, 1917), and lectotypes are designated for Mesopeplum burnetti, Talochlamys(?) fischeri, T. williamsoni, Dosinia greyi, Antisolarium stoliczkai, Crepidula incurva, Struthiolaria cingulata, S. canaliculata, and Dentalium mantelli, all of Zittel, 1865, Crypta striata Hutton, 1873 and Alcithoe hurupiensis Marwick, 1926. The publication date of all contributions in 'Palaontologie von Neu-Seeland' is 27 April 1865.
Taxonomic Revision Of The Superspecific Groups Of The Cretaceous And Cenozoic Tellinidae
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Author : Freydoun Afshar
language : en
Publisher:
Release Date : 1969
Taxonomic Revision Of The Superspecific Groups Of The Cretaceous And Cenozoic Tellinidae written by Freydoun Afshar and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with Science categories.
Phylogeny And Evolution Of The Mollusca
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Author : Winston Ponder
language : en
Publisher: Univ of California Press
Release Date : 2008-03-25
Phylogeny And Evolution Of The Mollusca written by Winston Ponder and has been published by Univ of California Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-03-25 with Nature categories.
"Ponder and Lindberg provides a breathtaking overview of the evolutionary history of the Mollusca, effectively melding information from anatomy, ecology, genomics, and paleobiology to explore the depths of molluscan phylogeny. Its outstanding success is due to thoughtful planning, focused complementary contributions from 36 expert authors, and careful editing. This volume is a must for malacologists."—Bruce Runnegar, Department of Earth and Space Sciences, University of California, Los Angeles "Our understanding of the phylogeny and evolutionary history of the mollusca has been revolutionized over the past two decades through new molecular data and analysis, and reinvestigation of morphological characters. In this volume Ponder, Lindberg, and their colleagues do a wonderful job of integrating this work to provide new perspectives on the relationships of the major molluscan clades, their evolutionary dynamics, and their history. Particularly timely is the coverage of molluscan evo-devo and genomics."—Douglas H. Erwin, Curator of Paleozoic Invertebrates, National Museum of Natural History
Pacific Neogene Datum Planes
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Author : Nobuo Ikebe
language : en
Publisher:
Release Date : 1984
Pacific Neogene Datum Planes written by Nobuo Ikebe and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984 with Science categories.
The Mollusks
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Author : Charles F. Sturm
language : en
Publisher: Universal-Publishers
Release Date : 2006
The Mollusks written by Charles F. Sturm and has been published by Universal-Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Science categories.
Mollusks have been important to humans since our earliest days. Initially, when humans were primarily interested in what they could eat or use, mollusks were important as food, ornaments, and materials for tools. Over the centuries, as human knowledge branched out and individuals started to study the world around them, mollusks were important subjects for learning how things worked. In this volume, the editors and contributors have brought together a broad range of topics within the field of malacology. It is our expectation that these topics will be of interest and use to amateur and professional malacologists.
Architectonicidae Of The Indo Pacific Mollusca Gastropoda
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Author : Rüdiger Bieler
language : en
Publisher:
Release Date : 1993
Architectonicidae Of The Indo Pacific Mollusca Gastropoda written by Rüdiger Bieler and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Architectonicidae categories.
Pacific Atlantic Mollusc Migration
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Author : Jón Eiríksson
language : en
Publisher: Springer Nature
Release Date : 2021-02-17
Pacific Atlantic Mollusc Migration written by Jón Eiríksson and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-02-17 with Science categories.
This volume sheds new light on the marine fauna and geological setting of the Tjörnes Sequence, North Iceland, which is a classic site for the Pliocene and Pleistocene stratigraphy of the North Atlantic region. Readers will discover descriptions of new data collected by the editors over a period of over three decades on marine faunal assemblages and sedimentology available for palaeoenvironmental reconstructions, as well as the tectonic and stratigraphical relationships on Tjörnes Peninsula. The book includes a comprehensive account of all the collections of marine fossil invertebrate macrofossils and foraminifera known to the editors from the Tjörnes Sequence. It is expected to elucidate sedimentological and faunal changes from relatively stable Pliocene conditions to highly variable and periodically harsh climatic conditions of recurring Quaternary glaciations. The distribution, recent or fossil, of various species is recorded and pertinent ecological and biological features are also discussed. The Tjörnes Sequence records the Neogene migration of Pacific species into the North Atlantic. Researchers in geology, climate science, environmental science and earth science will find this book particularly valuable.
The Living Marine Resources Of The Eastern Central Atlantic
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Author : Kent E. Carpenter
language : en
Publisher: Food & Agriculture Organization of the UN (FAO)
Release Date : 2014
The Living Marine Resources Of The Eastern Central Atlantic written by Kent E. Carpenter and has been published by Food & Agriculture Organization of the UN (FAO) this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with Technology & Engineering categories.
Each family generally has an account summarizing family diagnostic characters, biological and fisheries information, notes on similar families occurring in the area, a key to species, a check list of species, and a short list of relevant literature. Families that are less important to fisheries include an abbreviated family account.
The Superfamily Mactroidea Mollusca Bivalvia In American Waters
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Author : Javier H. Signorelli
language : en
Publisher: Springer Nature
Release Date : 2019-11-04
The Superfamily Mactroidea Mollusca Bivalvia In American Waters written by Javier H. Signorelli and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-11-04 with Science categories.
This book identifies all valid species belonging to the superfamily Mactroidea living in American waters, distributed across fourteen biogeographical provinces. It also provides an updated classification of the widely occurring Mactroidea superfamily, which comprises eight subfamilies grouped into four families: Mactridae (Lamarck, 1809); Anatinellidae (Deshayes, J.Gray 1853); Cardiliidae (Fischer, 1887) and Mesodesmatidae (J. Gray, 1840). The species included in this superfamily are known to have existed in North America since the Early Cretaceous.