Results 151 to 160 of about 1,765 (210)

Tiger shark feeding on sirenian – first fossil evidence from the middle Miocene of the Styrian Basin (Austria)

Historical Biology, 2021
Based on a shark-bitten partial skeleton of an immature sirenian (Metaxytherium cf. medium) from the middle Miocene of the Styrian Basin (Austria), we report on the oldest predator–prey interaction between tiger sharks and dugongs.
I. Feichtinger, I. Fritz, U. Göhlich
semanticscholar   +1 more source

First sirenian remains from the Palaeogene of Crimea

, 2021
Fragmentary remains, including two anterior premolars, axis fragment, a phalanx, and rib fragments from the Middle Eocene (late Bartonian) Ak-Kaya locality represent the first sirenian fossils from...
A. Averianov, E. Zvonok
semanticscholar   +1 more source

Evaluation of Cetacean and Sirenian Cytologic Samples

Veterinary Clinics of North America: Exotic Animal Practice, 2007
Cytology is a fundamental part of marine mammal veterinary medicine that is involved in preventive medicine programs in captive animals and in the health assessment of wild populations. Marine mammals often exhibit few clinical signs of disease; thus, the cost-effective and widely accessible nature of cytologic sampling renders it one of the most ...
René A, Varela, Kimberly, Schmidt, Juli D, Goldstein, Gregory D, Bossart   +3 more
openaire   +2 more sources

Hearing in Pinnipeds and Sirenians

2001
Pinnipeds and sirenians have not been subjects of as extensive investigation of hearing abilities and mechanisms as cetaceans have been. The studies performed on these animals did not reveal extreme hearing capabilities or echolocation. Nevertheless, their hearing system presents a great opportunity for understanding the various ways they have adapted ...
Alexander Ya. Supin, Vladimir V. Popov, Alla M. Mass   +2 more
openaire   +1 more source

Estimating body size of fossil sirenians

Marine Mammal Science, 2010
Estimates of fossil sirenian body size are important for understanding niche partitioning among possibly sympatric species. Because of the paucity of complete fossil skeletons, we explored the utility of three morphometric predictors of body size: (condylobasal skull length [BSL]; occipital condyle width [OCW]; and foramen magnum width [FMW]) in extant
Diana K. Sarko, Daryl P. Domning, Lori Marino, Roger L. Reep   +3 more
openaire   +1 more source

The earliest known fully quadrupedal sirenian

Nature, 2001
Modern seacows (manatees and dugongs; Mammalia, Sirenia) are completely aquatic, with flipperlike forelimbs and no hindlimbs. Here I describe Eocene fossils from Jamaica that represent nearly the entire skeleton of a new genus and species of sirenian--the most primitive for which extensive postcranial remains are known. This animal was fully capable of
openaire   +2 more sources

Sirenians in southern Australia—first fossil record

Alcheringa: An Australasian Journal of Palaeontology, 2006
The anterior half of the right mandible of a dugong is described from the early Pliocene Loxton Sands of the Murray Basin in South Australia. This is the oldest dugong fossil known in Australia, and, although not identifiable, is possibly antecedent to or the oldest representative of the genus Dugong.
openaire   +1 more source

Erratum: Merella, M., Collareta, A., Casati, S., Di Cencio, A. & Bianucci, G. (2021): An unexpected deadly meeting: deep-water (hexanchid) shark bite marks on a sirenian skeleton from Pliocene shoreface deposits of Tuscany (Italy).

Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen, 2022
Marco Merella, A. Collareta, S. Casati, Andrea Di Cencio, G. Bianucci   +4 more
semanticscholar   +1 more source

The Role of Sirenians in Aquatic Ecosystems

2012
The role of sirenians in aquatic ecosystems is largely a function of their feeding ecology. Sirenians are large herbivorous aquatic mammals that often congregate and, being mammals, have high energetic requirements relative to other marine herbivores.
Aragones, Lemnuel V., Lawler, Ivan, Marsh, Helene, Domning, Daryl, Hodgson, Amanda   +4 more
openaire   +1 more source

An unexpected deadly meeting: deep-water (hexanchid) shark bite marks on a sirenian skeleton from Pliocene shoreface deposits of Tuscany (Italy)

Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen, 2021
Marco Merella, A. Collareta, S. Casati, A. Cencio, G. Bianucci   +4 more
semanticscholar   +1 more source