Fossil evidence for the origin of behavioral strategies in early Miocene Castoridae, and their role in the evolution of the family

Paleobiology ◽  
1996 ◽  
Vol 22 (4) ◽  
pp. 507-513 ◽  
Author(s):  
Marguerite Hugueney ◽  
François Escuillié
Keyword(s):  
Parental Care ◽  
North American ◽  
Early Miocene ◽  
Behavioral Strategies ◽  
Way Of Life ◽  
European Beaver ◽  
The North ◽  
Strategy Model ◽  
The Family ◽  
Long Time

Steneofiber, an early Miocene European beaver, showed evidence of a K-strategy model of reproduction and important morphological modifications for better adaptation to a semiaquatic way of life. At the same time, a North American branch of Castoridae developed not only a parental care system but also a series of cranial and postcranial osteological adaptations to a burrowing way of life. As the North American and the European Castoridae evolved independently from each other for at least fifteen m.y., these behavioral trends seem to have been inherent in the family for a long time and have apparently promoted, up to the present time, the spread of semiaquatic forms on the two continents; on the contrary, the burrowing branch of the Castoridae rapidly vanished.

THE NORTH AMERICAN SPECIES OF MASSALONGIA AND GENERIC RELATIONSHIPS

1963 ◽  
Vol 41 (9) ◽  
pp. 1331-1346 ◽  
Author(s):  
Aino Henssen
Keyword(s):  
North American ◽  
Systematic Position ◽  
North American Species ◽  
New Combination ◽  
General Survey ◽  
The North ◽  
The Family ◽  
Generic Relationships

The systematic position of the genus Massalongia and the closely related genera Koerberia, Vestergrenopsis, and Placynthium in the family Peltigeraceae including lichens with hemiangiocarpic apothecia is discussed. The ontogeny of a hemiangiocarpic apothecium is described briefly. A key for the determination of the genera is provided.A general survey is given for the morphology and anatomy of the genus Massalongia. The two species, M. carnosa and M. microphylliza, are described in detail. The new combination M. microphylliza is made.

scholarly journals The Fourth International Symposium on Ranaviruses: Summary of North American Herpetological Content and Points of Interest

2020 ◽  
pp. 29
Author(s):  
Lauren Ash ◽  
Rachel Marschang ◽  
Jolianne Rijks ◽  
Amanda Duffus
Keyword(s):  
North America ◽  
International Symposium ◽  
North American ◽  
Fourth International Symposium ◽  
Dna Viruses ◽  
The North ◽  
Double Stranded Dna ◽  
Points Of Interest ◽  
The Family ◽  
Globally Distributed

Ranaviruses are large double stranded DNA viruses from the family Iridoviridae. They are globally distributed and are currently known to affect fish, reptiles and amphibians. In North America, ranaviruses are also widely distributed, and cause frequent morbidity and mortality events in both wild and cultured populations. This is a synopsys of the North American content of the 4th International Symposium on Ranaviruses held in May 2017 in Budapest, Hungary.

A New Gunnel, Pholis clemensi, from the Coast of Western North America

1964 ◽  
Vol 21 (5) ◽  
pp. 933-939 ◽  
Author(s):  
Richard H. Rosenblatt
Keyword(s):  
British Columbia ◽  
New Species ◽  
North America ◽  
North American ◽  
North American Species ◽  
Western North America ◽  
The North ◽  
The Family ◽  
Juan De Fuca ◽  
A New Species

A new species, Pholis clemensi, referred to the family Pholidae, is named and described from 12 specimens taken in southern British Columbia waters and the Strait of Juan de Fuca. Pholis clemensi is compared with other members of the genus, and a key is given to the North American species.

Larvae of the North American Olethreutidae (Lepidoptera)

1959 ◽  
Vol 91 (S10) ◽  
pp. 5-338 ◽  
Author(s):  
Margaret Rae MacKay
Keyword(s):  
North American ◽  
Fruit Trees ◽  
Individual Species ◽  
The North ◽  
The Family ◽  
Late Instar ◽  
Species Groups ◽  
Relationship Of ◽  
Spruce Needles ◽  
The Relationship

AbstractThe late-instar larvae of about 185 species of the North American Olethreutidae are described and most of them illustrated. Included in these are many pests, such as Grapholitha molesta, Carpocapsa pomonella, and Spilonota ocellana on fruit trees, Paralobesia viteana on grapes, Ancylis comptana fragariae on strawberries, Laspeyresia nigricana in pea pods, Laspeyresia caryana in hickory and pecan nuts, Taniva albolineana in spruce needles, and species of Rhyacionia and Petrova on pines. Keys to species groups and to individual species are provided. Of the diagnostic and specialized characters listed, the most useful include the setae, the spinneret, and the shape of the larva, especially of its head and anal shield. The main characters are given for the postulated ancestral larva and for the highly developed larva. Most of the species groups are arranged according to the suggested phylogenetic relationship of their larvae, emphasizing the necessity of a revision of the family. Larvae of some genera previously difficult to classify, such as Pseudogalleria and Hystricophora, indicate the relationship of those genera to other groups; conversely, lack of relationship is clearly shown in other instances, e.g., between Carpocapsa pomonella and Carpocapsa saltitans, and between the two species Epiblema culminana and E. suffusana and other members of the genus Epiblema.

UNDESCRIBED NORTH AMERICAN SPECIES OF PSELAPHIDAE (COLEOPTERA), INCLUDING A SYNOPSIS OF THE GENUS RHEXIDIUS CASEY

1932 ◽  
Vol 64 (2) ◽  
pp. 29-35
Author(s):  
Frank C. Fletcher
Keyword(s):  
North American ◽  
North American Species ◽  
The North ◽  
The Family

The following species, with one exception. are a part of those loaned me by various institutions during the course of my work on a revision of the North American species of the family.The location of the type is, in every case, indicated immediately after the description.

scholarly journals Late Turonian-early Coniacian belemnites from western and central Europe

1982 ◽  
Vol 31 ◽  
pp. 63-79
Author(s):  
Walter Kegel Christensen
Keyword(s):  
Central Europe ◽  
Late Cretaceous ◽  
North American ◽  
Evolutionary Trends ◽  
Taxonomic Character ◽  
Central European ◽  
The North ◽  
The Family ◽  
Early Late

A little known fauna of late Turonian--early Coniacian belemnites from the Central European palaeobiogeographic Subprovince is revised and the following species are recognised: Actinocamax strehlensis (Fritsch & Schlonbach), A. bohemicus Stolley, A. paderbornensis Schliiter, and A. esseniensis n. sp. The taxonomic value of various characters within Late Cretaceous belemnites belonging to the family Belemnitellidae Pavlov is discussed, and it is concluded that the shape of the guard is a more significant taxonomic character than the presence of granules. The species from the subprovince are compared to coeval species from the Central Russian Subprovince and the North American Province. The palaeobiogeography and evolutionary trends of early Late Cretaceous belemnites are discussed.

scholarly journals The North American two-winged flies of the family Simuliidae

1927 ◽  
Vol 69 (2636) ◽  
pp. 1-54 ◽  
Author(s):  
Harrison G. Dyar ◽  
Raymond C. Shannon
Keyword(s):  
North American ◽  
The North ◽  
The Family
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