Recherche
Résultats de recherche
-
Book chapter
Growth, age and size of the Jurassic pachycormid Leedsichthys problematicus (Osteichthyes: Actinopterygii)
The Jurassic pachycormid osteichthyan Leedsichthys problematicus is renowned for having been able to achieve prodigious size for a bony fish. Building on work of MARTILL (1986a), a thorough examination of all known material was conducted in order to constrain estimates of the size of this animal and examine its rate...Liston, Jeff ; Newbrey, Michael G. ; Challands, Thomas James ; Adams, Colin E
-
Book chapter
The plasticity of gill raker characteristics in suspension feeders: Implications for Pachycormiformes
Pachycormids apparently represent part of the first radiation of the total group of teleosts, and therefore are important in understanding stem teleost phylogeny. Gill rakers (or fanunculi) are elements of the gill skeleton (branchial basket) in fishes that function primarily to protect respiratory lamellae, and sometimes have a secondary role...Liston, Jeff
-
Book chapter
Large cats
Based on the acclaimed print series, Grzimek's Animal Life Encyclopedia, 2nd ed., this new supplement covers extinct life. Written for students and general researchers, this supplement explores all aspects of extinctions and extinct life. Approximately 80 articles outline major extinctions and related scientific areas. - Extract from publisher's websiteKitchener, Andrew C
-
Book chapter
Biodiversity, biogeography and phylogeography of Ordovician rhynchonelliform brachiopods
The phylogeographical evolution and the consequent changing distribution and diversity of rhynchonelliform brachiopods through the Ordovician are linked to the dynamic palaeogeography of the period. The Early Ordovician (Tremadocian and Floian) is characterized by globally low-diversity faunas with local biodiversity epicentres, notably on the South China Palaeoplate; low-latitude porambonitoid-dominated faunas...Harper, David A T ; Rasmussen, Christian M Ø ; Liljeroth, Maria ; Blodgett, Robert B ; Candela, Yves …
-
Book chapter
Land bridge calibration of rates of molecular evolution in a widespread rodent
There is mounting evidence that rates of molecular evolution decay over recent timescales. Care is needed, therefore, to apply appropriate rates whenever molecular variation is analysed within a temporal context. Given their focus on recent events, intraspecific phylogeographic and demographic studies are particularly vulnerable to erroneous application of rates appropriate...Herman, Jeremy S ; Paupério, J ; Alves, P C ; Searle, Jeremy B
-
Book chapter
What is a tiger? Biogeography, morphology, and taxonomy
The tiger has always had a considerable impact on human cultures, especially where people and tigers have lived together and still do co-exist. It is certainly one of the most easily recognizable cats, with its distinctive and unique striped coat and is also commonly believed to be the biggest cat...Kitchener, Andrew C ; Yamaguchi, Nobuyuki
-
Book chapter
Collecting nature within nature – animal inclusings in Amber in Early Modern Collections, or “Miniture marvels of nature”
When the French diplomat Charles Ogier saw frogs and lizards embedded in amber for sale during his visit to Danzig in November 1635 he called them “miniature miracles of nature.” With rare exceptions, few of these objects—copiously documented in inventories of the time—have actually survived. Instead, we must depend on...King, Rachel
-
Book chapter
Zooplankton Identification Manual for North European Seas (ZIMNES)
The ecological importance of marine zooplankton cannot be overestimated. Throughout the world’s oceans, plankton species abundance and diversity impact, determine and drive global cycles, food-web structure and ecosystem stability (Banse, 1995; Sommer, 1996; Lindley et al., 2003). Plankton communities mediate transfer of organic matter from the productive photic zone to...Hastie, L C ; Rasmussen, J ; Angel, M V ; Boxshall, G A ; Chambers, Susan …
horticulture and forestry, agriculture, Natural resource management, and Ecology and conservation
- « Précédente
- Suivante »
- 1
- 2
- 3
- 4
- 5
- …
- 7
- 8