Revision of Sternaspis Otto, 1821 (Polychaeta, Sternaspidae)
Revision of Sternaspis Otto, 1821 (Polychaeta, Sternaspidae)

Author: Kelly Sendall

Publisher: PenSoft Publishers LTD

Published: 2013-04-08

Total Pages: 82

ISBN-13: 9546426792

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The peanut-shaped sternaspid polychaetes have been known since 1760 when Plancus named them as Mentula cucurbitacea marina. Sternaspids are common and abundant in soft bottoms. Some authors suggested that only one species should be recognized, whereas others regard a few species very widely distributed and variable depths. Delineating species was problematic; the ventro-caudal shield was disregarded or barely used for identifying species. In this contribution the ventral shield is evaluated and its diagnostic potential is confirmed. The revision of Sternaspis is based upon type or topotype materials. Sternaspid body, introvert hooks and shield show three distinct patterns: two genera have 7 abdominal segments and tapered introvert hooks, and one genus has 8 abdominal segments and spatulate introvert hooks. The ventro-caudal shield has 3 different patterns: stiff with ribs, and sometimes concentric lines, stiff with feebly-defined ribs but no concentric lines, and soft with firmly adhered sediment particles. Sternaspis is restricted to include species with 7 abdominal segments, falcate introvert hooks, and stiff shields, often exhibiting radial ribs, concentric lines or both. Two new genera incorporate the remaining species: Caulleryaspis has falcate introvert hooks, 7 abdominal segments, and soft shields with sediment particles firmly adhered on them. Petersenaspis has spatulate introvert hooks, 8 abdominal segments, and stiff shields with poorly-defined ribs but no concentric line. The geographic range of most species is smaller than previously indicated. Keys to genera and to all species are also included.

The Biology of Gobies
The Biology of Gobies

Author: Robert Patzner

Publisher: CRC Press

Published: 2011-09-02

Total Pages: 679

ISBN-13: 1439862338

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Among all vertebrates, gobies are second in diversity only to the teleost family Cyprinidae. The Gobiidae consists of more than 200 genera and nearly 2,000 species and make up the largest family of marine fishes. Gobies account for as much as 50% of the energy flow in coral reef communities. Their small size, ability to adapt to numerous ecological

Monograph of the Urostyloidea (Ciliophora, Hypotricha)
Monograph of the Urostyloidea (Ciliophora, Hypotricha)

Author: Helmut Berger

Publisher: Springer

Published: 2007-01-17

Total Pages: 1304

ISBN-13: 9781402052729

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This is the second book of a series treating the hypotrichs, a major part of the spirotrichous ciliates. It summarises 230 years of morphological, morphogenetic, faunistic, and ecological data, heretofore scattered in some 1,300 references around the world. The book provides taxonomists, cell biologists, and ecologists with a thorough survey supplying synonyms, nomenclature and systematics, and an extensive description of morphology and ecology, including almost all published records, for each species.

The Tertiary and Quaternary Pectens of California
The Tertiary and Quaternary Pectens of California

Author: Ralph Arnold

Publisher: Sagwan Press

Published: 2015-08-25

Total Pages: 0

ISBN-13: 9781340313616

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This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Revision of New Zealand Cenozoic Fossil Mollusca Described by Zittel (1865) Based on Hochstetter's Collections from the Novara Expedition
Revision of New Zealand Cenozoic Fossil Mollusca Described by Zittel (1865) Based on Hochstetter's Collections from the Novara Expedition

Author: Alan Glenn Beu

Publisher:

Published: 2012

Total Pages: 69

ISBN-13: 9780949466419

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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.