Author: John Percy MoorePublisher:
ISBN:
Category :
Languages : en
Pages : 14
Book Description
The Polychaetous Annelids Dredged in 1908 by Owen Bryant Off the Coasts of Labrador, Newfoundland and Nova Scotia
Author: John Percy MooreThe polychaetous annelids dredged in 1908 by Mrs. Owen Bryant off the coasts of Labrador, Newfoundland, and Nova Scotia
Author: John Percy MoorePublisher:
ISBN:
Category : Polychaeta
Languages : en
Pages : 14
Book Description
Polychaetous Annelids Dredged in 1908 by Mr. Owen Bryant Off the Coasts of Labrador, Newfoundland, and Nova Scotia
Author: United States National MuseumPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Journal of the Marine Biological Association of the United Kingdom
Author: Marine Biological Association of the United KingdomPublisher:
ISBN:
Category : Biology
Languages : en
Pages : 664
Book Description
The Record of Zoological Literature
Author: Contributions from the Zoological Laboratory of the University of Pennsylvania
Author: University of Pennsylvania. Zoological LaboratoryPublisher:
ISBN:
Category : Zoology
Languages : en
Pages : 744
Book Description
Contributions from the Zoological Laboratory
Author: University of Pennsylvania. Zoological LaboratoryPublisher:
ISBN:
Category : Zoology
Languages : en
Pages : 750
Book Description
Vols. for 189 --1956-58 are reprinted from various scientific journals.
The Zoological Record
Author: Publisher:
ISBN:
Category : Classification
Languages : en
Pages : 1450
Book Description
Indexes the world's zoological and animal science literature, covering all research from biochemistry to veterinary medicine. The database provides a collection of references from over 4,500 international serial publications, plus books, meetings, reviews and other no- serial literature from over 100 countries. It is the oldest continuing database of animal biology, indexing literature published from 1864 to the present. Zoological Record has long been recognized as the "unofficial register" for taxonomy and systematics, but other topics in animal biology are also covered.
Fishery Bulletin
Author: Revision of Sternaspis Otto, 1821 (Polychaeta, Sternaspidae)
Author: Kelly SendallPublisher: PenSoft Publishers LTD
ISBN: 9546426792
Category : Science
Languages : en
Pages : 82
Book Description
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.