Results 81 to 90 of about 1,232 (176)

兽类学基础知识 第十一讲 海牛目

野生动物学报, 1984
海牛目（Sirenia）是全世界三大水生兽类的类群之一（另为鲸类和鳍脚类）。其外形呈纺锤形,颇似小的鲸鱼;但是,其似鲸而非鲸,从形态上到演化上,均与鲸类完全不同,二者区分之处如下: （1） 海牛的颈虽短,但毕竟有颈部,能弯曲;鲸无颈,体形完全似鱼,头与躯干直接相联接。 （2） 海牛的鼻部宽而钝,中央有一个垂直的沟,其两侧还各有一垂直的沟;任何鲸类无上述的沟。
罗泽珣
doaj  

Some new mammal records from the rainforests of south-eastern Nigeria

Hystrix, the Italian Journal of Mammalogy, 2001
<strong>Abstract</strong> In this paper we report new data on the occurrence and range of seven mammal species in the rainforest region of south-eastern Nigeria. The species in question are: <em>Potamogale velox</em> (Insectivora)
Francesco Angelici, Bomiegha Egbide, Godfrey Akani   +2 more
doaj   +1 more source

Dugong (Dugong dugon) Conservation in China: Current Status, Challenges, and Policy Recommendations

Conservation
The dugong (Dugong dugon) is the sole extant species of the genus Dugong within the order Sirenia, and the only strictly herbivorous marine mammal. As one of the oldest marine mammals, it plays a vital role in maintaining marine biodiversity.
Yue Zhang, Zhiguo Dou, Guoxiang Liao, Daoyan Xu, Shengjun Yan, Shifei Li   +5 more
doaj   +1 more source

Bibliography and Index of the Sirenia and Desmostylia

Smithsonian Contributions to Paleobiology, 1996
The significant published literature on the neobiology, paleobiology, and ethnobiology of the mammalian orders Sirenia and Desmostylia is exhaustively cataloged in approximately 4590 main entries alphabetized by author. Both technical and popular works are included, and many entries are annotated. The earliest work cited is a letter by N.
openaire   +2 more sources

Urinary parameters of Trichechus inunguis (Mammalia, Sirenia): reference values for the Amazonian Manatee

Brazilian Journal of Biology
The Amazonian manatee, Trichechus inunguis (Natterer 1883) is endemic to the Amazon Basin and is currently considered a vulnerable species. In order to establish normality ranges of urinary parameters to help monitor the health of this species in ...
TMA. Pantoja, FCW. Da Rosas, VMF. Dos Silva, AMF. Santos   +3 more
doaj   +1 more source

A Phylogenetic Analysis of the Sirenia

, 1994
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +2 more sources

The Sirenia [PDF]

The American Naturalist, 1878
openaire   +1 more source

High abundance of Early Miocene sea cows from Qatar shows repeated evolution of seagrass ecosystem engineers in Eastern Tethys. [PDF]

PeerJ
Pyenson ND, Sakal F, LeBlanc J, Blundell J, Klim KD, Marshall CD, Velez-Juarbe J, Wolfe K, Al-Naimi F.   +8 more
europepmc   +1 more source

Ancestral chromosomal signatures of Paenungulata (Afroteria) reveal the karyotype of Amazonian manatee (Trichechus inunguis, Sirenia: Trichechidae) as the oldest among American manatees. [PDF]

BMC Genomics, 2023
Tavares FDS, Oliveira da Silva W, Ferguson-Smith MA, Klautau AGCM, Oliveira JM, Rodrigues ALF, Melo-Santos G, Pieczarka JC, Nagamachi CY, Noronha RCR.   +9 more
europepmc   +1 more source

Completing a molecular timetree of Afrotheria. [PDF]

Front Bioinform
Craig JM, Fisher WL, Thomas AS, Hedges SB, Kumar S.   +4 more
europepmc   +1 more source