Results 51 to 60 of about 1,151,958 (355)

Dental crown morphological variation and heterodonty in carcharhiniform sharks

The Anatomical Record, EarlyView.
Abstract Elasmobranch teeth are highly mineralized structures that constitute the majority of the fossil record for this group. Despite their taxonomic and evolutionary significance, detailed descriptions of dental morphology remain scarce. The order Carcharhiniformes, the most diverse among sharks, comprises 304 valid species that display remarkable ...
Flávia Zanini, Karla D. A. Soares
wiley   +1 more source

Feeding by grey seals in the Gulf of St. Lawrence and around Newfoundland

NAMMCO Scientific Publications, 2007
Diet composition of grey seals in the Gulf of St. Lawrence (Gulf) and around the coast of Newfoundland, Canada, was examined using identification of otoliths recovered from digestive tracts. Prey were recovered from 632 animals.
M O Hammill, G B Stenson, F Proust, P Carter, D McKinnon   +4 more
doaj   +1 more source

Results of abundance surveys of juvenile Atlantic and gulf Menhaden, Brevoortia tyrannus and B. patronus [PDF]

, 1989
The estuarine populations of juvenile Atlantic and gulf menhaden (Brevoortia tyrannus and B. patronus) were sampled during two-boat, surface-trawl, abundance surveys extensively conducted in the 1970s.
Ahrenholz, Dean W., Guthrie, James F., Krouse, Charles W.   +2 more
core  

Paleoamerican diet, migration and morphology in Brazil [PDF]

, 2011
During the early Holocene two main paleoamerican cultures thrived in Brazil: the Tradição Nordeste in the semi-desertic Sertão and the Tradição Itaparica in the high plains of the Planalto Central.
Eggers, Sabine, Grupe, Gisela, Parks, Maria, Reinhard, Karl J.   +3 more
core   +1 more source

A new species of Lonchidiidae (Hybodontiformes) from the Late Jurassic of Brazil (Aliança Formation, Jatobá Basin)

The Anatomical Record, EarlyView.
Abstract The Aliança Formation (Jatobá Basin) represents lacustrine deposits formed in oxygenated waters that hosted a diverse fauna, including Hybodontiform sharks. Within this group, the Family Lonchidiidae comprises 11 valid genera, with Parvodus previously reported in Brazilian deposits from the Brejo Santo Formation (Araripe Basin, Late Jurassic ...
Larissa de Souza Ribeiro, Marco Aurélio Gallo de França   +1 more
wiley   +1 more source

The Command and Control of Canadian and American Maritime Air Power in the Northwest Atlantic, 1941-1943 [PDF]

, 2017
Operational, organizational, doctrinal, and cultural differences hampered effective command and control of Canadian and American maritime air power defending shipping against U-boats off the east coast during the Second World War.
Goette, Richard
core   +1 more source

Gleaning the Rocky Shore? 2500 Years of Coastal Resource Use at Red Bluff 1, GunaiKurnai Country, SE Australia

Archaeology in Oceania, EarlyView.
ABSTRACT Shell middens in Gippsland along the eastern half of Victoria's coastline have usually been characterised as small, short‐duration camp sites with relatively low shell densities and low taxonomic diversity. Here we present new excavation results from a dense, high‐diversity site at Red Bluff near the eastern end of GunaiKurnai Country, a ...
Patrick Faulkner, Bruno David, David M. Kennedy, Fiona Petchey, Joanna Fresløv, Ashleigh J. Rogers, Jillian Garvey, Rachel Kirby, Runjie Yuan, Russell Mullett, John Stanisic, Kyne Krusic‐Golub, V. Ruth Pullin, Matthew C. McDowell, Robert J. Skelly, Anthony Romano, Vanessa N. L. Wong, GunaiKurnai Land and Waters Aboriginal Corporation   +17 more
wiley   +1 more source

A Highly Prevalent and Pervasive Densovirus Discovered among Sea Stars from the North American Atlantic Coast

Applied and Environmental Microbiology, 2019
Sea star wasting syndrome is a disease primarily observed on the Pacific and Atlantic Coasts of North America that has significantly impacted sea star populations.
Elliot W. Jackson, C. Pepe-Ranney, Mitchell R. Johnson, D. Distel, I. Hewson   +4 more
semanticscholar   +1 more source

Hiding in Plain Sight: Rethinking the Size and Complexity of Iron Age Hillforts in NW Iberia Thanks to Aerial Archaeology and Geophysics

Archaeological Prospection, EarlyView.
ABSTRACT This paper tackles one key limitation in the analysis of Iron Age communities in the Northwestern Iberian Peninsula: the limited exploration of areas beyond the fortified settlements known as castros (hillforts). The vast majority of archaeological studies have focused exclusively on the areas inside the walls of these settlements, which are ...
César Parcero‐Oubiña, Carlos Otero‐Vilariño, María Gómez‐Faro, Jesús Ignacio Jiménez Chaparro, Pastor Fábrega‐Álvarez, Juan Torrejón‐Valdelomar, Marta Crespo‐Fernández, David González‐Álvarez   +7 more
wiley   +1 more source

Revisão taxonômica das espécies de Anthurium (Araceae) seção Urospadix subseção Flavescentiviridia

Rodriguésia
RESUMO Apresenta-se o estudo taxonômico de 35 espécies de Anthurium seção Urospadix subseção Flavescentiviridia, com base em análises dos caracteres morfológicos vegetativos e reprodutivos, a partir de material coletado em campo e de exsicatas de ...
Marcus A. Nadruz Coelho, Jorge L. Waechter, Simon J. Mayo   +2 more
doaj   +1 more source