Results 91 to 100 of about 72,235 (277)

Protein and chitin preservation in polymeric sheets in Miocene Ecphora gardnerae shells from Maryland, USA [PDF]

open access: yesActa Palaeontologica Polonica
The shells of muricoid gastropod Ecphora gardnerae from the Miocene St. Marys Formation of Maryland, USA, have been shown to contain polymeric sheets within the calcareous matrix. These membranes were found to have amino acids and complex sugar compounds.
Timothy P. Cleland   +5 more
doaj   +1 more source

Two new Miocene limpets (Fissurellidae) from southern California, with notes on other fossil occurrences of the family in northwestern North America [PDF]

open access: yes, 2019
Two new fissurellid limpets (Mollusca: Gastropoda: Fissurellidae), Fissurella? stantoni n. sp. and Scelidotoma aldersoni n. sp., are described from Miocene deposits in southern California. Fissurella? stantoni is described from a single specimen from the
Geiger, Daniel L.   +1 more
core  

The macroinvertebrate seedbank promotes community persistence in temporary rivers across climate zones [PDF]

open access: yes, 2013
1. Aquatic macroinvertebrates inhabiting temporary rivers are typically described as having low resistance to riverbed drying. However, little research has examined the ‘seedbank’ within dry riverbed sediments, which comprises aquatic life stages that ...
Datry, T, Stubbington, R
core   +2 more sources

Freshwater mollusks of Transcarpathian (the Tisa River basin) in malacological collections of Ukraine

open access: yesGeo&Bio, 2018
The data on malacological collections stored in four natural depositories of Ukraine is analyzed. These museums are as follows: State Natural History Museum, Lviv; malacological col-lection by Prof. V.
Yu. Furyk
doaj   +1 more source

Relating Depth and Diversity of Bivalvia and Gastropoda in Two Contrasting Sub-Arctic Marine Regions

open access: yesFrontiers in Marine Science, 2019
The need to understand species distribution- and biodiversity patterns in high-latitude marine regions is immediate as these marine environments are undergoing rapid environmental changes, including ocean warming and ocean acidification. By the year 2100,
Hronn Egilsdottir   +3 more
doaj   +1 more source

ANALISIS KELIMPAHAN DAN KEANEKARAGAMAN GASTROPODA DI PADANG LAMUN PANTAI SINDANGKERTA CIPATUJAH KABUPATEN TASIKMALAYA [PDF]

open access: yes, 2017
Penelitian yang bertujuan untuk mendapatkan informasi secara kuantitatif mengenai kelimpahan dan keanekaragaman Gastropoda di Padang Lamun Pantai Sindangkerta telah dilakukan pada bulan Mei 2017.
IRMA SANI, 135040053
core  

Phylogenetic analysis of the Camaenidae (Mollusca: Stylommatophora) with special emphasis on the american taxa [PDF]

open access: yes, 2003
The monophyly of the land snail family Camaenidae has been in doubt due to a disjunct bihemispheric distributional pattern and to the lack of morphological synapomorphies.
Cuezzo, Maria Gabriela
core   +2 more sources

Movilidad, redes de intercambio y circulación de bienes en el sudoeste del Neuquén (Norpatagonia, Argentina): Los moluscos marinos del lago Traful Mobility, Exchange Networks And Circulation Of Goods In Southwestern Neuquén, Northern Patagonia, Argentina: The Marine Mollusks From Traful Lake

open access: yesIntersecciones en Antropología, 2010
Se determina la procedencia de fragmentos de moluscos marinos hallados en los aleros Los Cipreses y Lariviere, en el área del lago Traful, sur de la provincia de Neuquén.
Mario Silveira   +2 more
doaj  

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