Last edited by Kigahn
Sunday, August 9, 2020 | History

2 edition of Studies on the Paleozoic Selachian genus Ctenacanthus Agassiz, no. 2 found in the catalog.

Studies on the Paleozoic Selachian genus Ctenacanthus Agassiz, no. 2

John G. Maisey

Studies on the Paleozoic Selachian genus Ctenacanthus Agassiz, no. 2

Bythiacanthus St. John and Worthen, Amelacanthus, new genus, Eunemacanthus St. John and Worthen, Sphenacanthus Agassiz, and Wodnika Münster

by John G. Maisey

  • 369 Want to read
  • 14 Currently reading

Published by American Museum of Natural History in New York, N.Y .
Written in English

    Subjects:
  • Ctenacanthus.,
  • Paleontology -- Paleozoic.

  • Edition Notes

    StatementJohn G. Maisey.
    SeriesAmerican Museum novitates,, no. 2722
    Classifications
    LC ClassificationsQL1 .A436 no. 2722, QE852.E6 .A436 no. 2722
    The Physical Object
    Pagination24 p. :
    Number of Pages24
    ID Numbers
    Open LibraryOL3033835M
    LC Control Number82122280

    Department of Botany, University of Natal, P.O. Box , Republic of South Africa Taxonomic studies in the Acanthaceae: A reappraisal of the genera Duvernoia and Adhatoda in southern Africa J.C. Manning, Fiona GetIiffe Norris, * Department of Botany, University of Natal, Pietermaritzburg Department of Botany University of Natal Pietermaritzburg * To whom correspondence should be addressed Cited by: 2.   A new genus and species Termihabena lirata gen. et sp. nov. is described from the Lower Permian reef limestones of Shakh-Tau (southern Cisuralia). The new genus includes another five species: T. nikitowkensis (Yakowlew, ), T. asiatica (Licharew, ), T. millegranosa (Girty, ), T. pinegensis (Mazaev, ), and T. sp. (Batten, ). T. pinegensis is re-described based on new Cited by: 1.

    Faunistic studies on Paederinae (Coleoptera: Staphylinidae) in Manisa province, Turkey. Munis Entomology & Zoology 3 (2): ] ABSTRACT: In this study, fauna of Paederinae from Manisa province of Turkey were studied and 35 species belonging to 16 . but the results of the studies before done suggest that an important richness of biologically active phenolics exists in the genus. The relevance and the efforts already made are worthy for systematizing the information in order to facilitate sustainable further studies. That was the aim of the present paper. 2. Genus. Agave. The genus. AgaveFile Size: KB.

      no.1 () Bibliography: p. This revision of Aglaonema (ranging from northeastern India through New Guinea) is based on study of over herbarium specimens in 33 herbaria, supplemented by field studies and over personal collections made in Pages:   From a study of species of the genus Mycena collected in New Zealand, descriptions are given of seven new species, M. globuliformis, M. lividorubra, M. mamaku, M. oratiensis, M. podocarpi, M. ruhroglobosa and M. vinaceipora, and one new record, M. austroavenacea. Four species previously described by Stevenson () are re-examined in detail, the identity of three confirmed, M. mariae, M Cited by: 8.


Share this book
You might also like
Annual report and accounts.

Annual report and accounts.

Thomas More.

Thomas More.

Understanding Firrea

Understanding Firrea

Demonstration laboratory manual

Demonstration laboratory manual

2000 Import and Export Market for Special Transactions and Commodities in Belize

2000 Import and Export Market for Special Transactions and Commodities in Belize

Why do people buy? A close look at selling

Why do people buy? A close look at selling

practical introduction to measurement and evaluation

practical introduction to measurement and evaluation

Thirteenth European Conference on Chemical Vapor Deposition: Proceedings : EURO CVD Thirteen

Thirteenth European Conference on Chemical Vapor Deposition: Proceedings : EURO CVD Thirteen

Milton & modern man

Milton & modern man

National urban development policy framework

National urban development policy framework

BIOVENTING PRINCIPLES AND PRACTICES... VOLUME I: BIOVENTING PRINCIPLES... MANUAL... U.S. ENVIRONMENTAL PROTECTION AGENCY... SEPTEMBER 199

BIOVENTING PRINCIPLES AND PRACTICES... VOLUME I: BIOVENTING PRINCIPLES... MANUAL... U.S. ENVIRONMENTAL PROTECTION AGENCY... SEPTEMBER 199

The analects of Confucius

The analects of Confucius

Higher education and politics in colonial India

Higher education and politics in colonial India

Studies on the Paleozoic Selachian genus Ctenacanthus Agassiz, no. 2 by John G. Maisey Download PDF EPUB FB2

Studies on the Paleozoic selachian genus Ctenacanthus Agassiz. 2, Bythiacanthus St. John and Worthen, Amelacanthus, new genus, Eunemacanthus St.

John and Worthen, Sphenacanthus Agassiz, and Wodnika Münster. American Museum novitates ; no. Studies on the Paleozoic Selachian genus Ctenacanthus Agassiz: No. 3, Nominal species referred to Ctenacanthus (American Museum novitates) [Maisey, John G] on *FREE* shipping on qualifying offers.

Studies on the Paleozoic Selachian genus Ctenacanthus Agassiz: No. 3, Nominal species referred to Ctenacanthus (American Museum novitates)Author: John G Maisey.

"Ctenacanthus Agassiz is a genus of elasmobranch, originally recognized by its dorsal finspines but now known from more complete remains.

However, many other fossils, including isolated spines and complete fish, have been included in Ctenacanthus, although the spines differ from those of the type species, C. major, and from other presumably related species.

Studies on the Paleozoic selachian genus Ctenacanthus Agassiz. 3, Nominal species referred to Ctenacanthus. American Museum novitates ; no. Maisey, John G. Type.

Book Publication info. Language. English. Find in a local library. " All known nominal species of the Paleozoic chondrichthyan genus Ctenacanthus are listed, together with information concerning provenance, whereabouts of type material (where known), important subsequent references and comments on the probable.

Studies on the Paleozoic selachian genus Ctenacanthus Agassiz. 2, Bythiacanthus St. John and Worthen, Amelacanthus, new genus, Eunemacanthus St. John and Worthen, Sphenacanthus Agassiz, and Wodnika Münster. Studies on the Paleozoic Selachian Genus Ctenacanthus Agassiz: No.

Bythiacanthus St. John and Worthen, Amelacanthus, New Genus, Eunemacanthus St. John and Worthen, Sphenacanthus Agassiz, and Wodnika Munster (American Museum Novitates, No.pp. by Maisey, John G. and a great selection of related books, art and collectibles available now at Studies on the Paleozoic selachian genus Ctenacanthus Agassiz.

2, Bythiacanthus St. John and Worthen, Amelacanthus, new genus, Eunemacanthus St. John and Worthen, Sphenacanthus Agassiz, and Wodnika Münster.

American Museum Novitates 1–24, 11 fig. PDF Reference page. The claim that the Carboniferous chondrichthyan genus Cladodus Agassiz,is a nomen vanum is critically examined. The teeth of C. mirabilis, the type species of the genus, are re-examined.

Comments on the selachian genus Cladodus Agassiz, Article in Journal of Vertebrate Paleontology 26(2) January with 6 Reads How we measure 'reads'. Notwithstanding the abundance of the well-known teeth of Pzychodus in the Chalk of many localities, and the long list of specific forms that have already been recognized, very little information has hitherto been published in regard to the precise affinities of the fish to which they originally appertained.

So rarely, indeed, are any of the teeth found associated in natural sequence, Cited by:   Maisey JG () Studies on the Paleozoic selachian genus Ctenacanthus Agassiz.

3, Nominal species referred to Ctenacanthus. 3, Nominal species referred to Ctenacanthus. Am Mus Novit –20 Google ScholarCited by: 1. Abstract. Palaeospinax (Lower Jurassic) is the oldest euselachian known from articulated remains, and has certain structural similarities with ctenacanths.

Euselachians may therefore have evolved from ctenacanth fishes and not from hybodonts. Nemacanthus Agassiz (Triassic), known only from finspines, is closely allied to Palaeospinax and may represent an immediate by: Studies on the Paleozoic selachian genus Ctenacanthus Agassiz. 1, Historical review and revised diagnosis of Ctenacanthus, with a list of referred taxa.

American Museum Novitates, 1– Palaeospinax (Lower Jurassic) is the oldest euselachian known from articulated remains, and has certain structural similarities with ctenacanths. Euselachians may therefore have evolved from ctenacanth fishes and not from hybodonts. Nemacanthus Agassiz (Triassic), known only from finspines, is closely allied to Palaeospinax and may represent an immediate by: 2 phases- caused by global cooling caused by glaciation in Gondwana (1st phase drop, 2nd phase rise in sea level) What were the characteristics of theraspids that they adapted to by the end of Paleozoic.

Similar to mammals, no longer sprawling legs, complex jaws, warm blooded. The Paleozoic ended in the greatest mass extinction event in world history. During this massive die-off nearly 95% of all marine species went extinct. The cause of this greatest catastrophe in Earth history has been much investigated and scientific consensus of its cause is emerging.

During the Paleozoic we see several major advances in life. About this book. The Indo-Pacific surgeonfish genus Ctenochaetus, unique in having VIII dorsal spines and numerous slender flexible teeth with expanded, incurved, denticulate tips, consists of the following 9 species: C.

binotatus Randall (East Africa to Tuamotu Archipelago), distinct in having a lunate caudal fin and a prominent black spot at rear base of both the dorsal and anal fins, the. INTRODUCTION. Most of the Cretaceous fossil shark record in South America is restricted to pioneering finds made by the Argentinian paleontologist Florentino Ameghino (,).The specimens reported by Ameghino come from the Upper Cretaceous (Coniacian) of Patagonia and belong to indeterminate odontaspidids and hexanchids, Cretolamna sp., and some selachians of Cited by: 5.

Methods: A survey of fishes of river Gomti was carried out during the year – Acanthocephalans recovered from the intestine of Channa punctatus were kept in refrigerator for eversion of proboscis, fixed in A.F.A.

fixative (50% alcohol, formalin and acetic acid in ratio of 6: ) for 24 hours further preserved in 70% ethanol.

Camera Lucida diagrams of acetoalum carmine stained. A taxonomic revision of the genus Plagiothecium for North America: North of Mexico, (Publications in botany) Unknown Binding – January 1, by Robert R Ireland (Author) See all formats and editions Hide other formats and editions. The Amazon Book Review Book recommendations, author interviews, editors' picks, and more.

Author: Robert R Ireland.The stratotypical Campanian of the northern Aquitaine Basin has yielded a relatively rich and diverse selachian fauna. This fauna consists of 20 taxa, two of which represent new species: Carcharias adneti sp. nov. and Rhombodus carentonensis sp. nov. Additionally, one new combination is proposed: Serratolamna khderii (Zalmout and Mustafa, ) comb.

by: The author presents general data about the reproductive cycle of Selachian Fishes, chiefly based on species of Tunisian coasts. In this paper is also presented a discussion about the different modes of reproduction oviparity and viviparity (placental and non-placental) and their variations according to families, genus and : Capapé C.