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The olfactory receptor gene repertoires in secondary-adapted marine vertebrates: evidence for reduction of the functional proportions in cetaceans
An olfactory receptor (OR) multigene family is responsible for the well-developed sense of smell possessed by terrestrial tetrapods. Mammalian OR genes had diverged greatly in the terrestrialExpand
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Tiny Sea Anemone from the Lower Cambrian of China
Background Abundant fossils from the Ediacaran and Cambrian showing cnidarian grade grossly suggest that cnidarian diversification occurred earlier than that of other eumetazoans. However, fossils ofExpand
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Early Cambrian Pentamerous Cubozoan Embryos from South China
Background Extant cubozoans are voracious predators characterized by their square shape, four evenly spaced outstretched tentacles and well-developed eyes. A few cubozoan fossils are known from theExpand
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Divergent evolution of medusozoan symmetric patterns: Evidence from the microanatomy of Cambrian tetramerous cubozoans from South China
Abstract Living medusozoans and their Middle Cambrian ancestors are characterized fundamentally by four-fold symmetry. The symmetric pattern of their earlier antecedents during the Ediacaran–CambrianExpand
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Species in the genus Turritopsis (Cnidaria, Hydrozoa) : a molecular evaluation
Mitochondrial ribosomal gene sequences were used to investigate the status of several populations of hydromedusae belonging to the genus Turritopsis (family Oceaniidae). Several nominal species haveExpand
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Sexually Dimorphic Cubomedusa Carybdea sivickisi (Cnidaria: Cubozoa) in Seto, Wakayama, Japan
The small but distinctive cubomedusa Carybdea sivickisi has been reported from a range of tropical, subtropical, and mild temperate localities in the Pacific. In Japan, it has only definitively beenExpand
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The earliest pelagic jellyfish with rhopalia from Cambrian Chengjiang Lagerstätte
Abstract Modern cnidarian medusae generally show a triphasic life cycle with the succession of a larva, a sessile polyp and a pelagic medusa stage. The debate around the metagenesis of sessile polypsExpand
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Species identification of bivalve‐inhabiting marine hydrozoans of the genus Eugymnanthea
. Species-level identification is difficult in the symbiotic bivalve-inhabiting hydrozoans of the genus Eugymnanthea (Cnidaria, Hydrozoa). Morphological differences are detected only in the adultExpand
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The medusae of some species of Hebella Allman, 1888, and Anthohebella gen. nov. (Cnidaria, Hydrozoa, Lafoeidae), with a world synopsis of species*
The newly liberated, immature medusae of H. scandens, Hebella furax, H. muscensis, and the liberable eumedusoid of H. dyssymetra are described. The taxonomy of the medusa-producing Hebellinae isExpand
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The relationship between fine rings in the statolith and growth of the cubomedusa Chiropsalmus quadrigatus (Cnidaria: Cubozoa) from Okinawa Island, Japan
Sixty-nine Chiropsalmus quadrigatus medusae were collected from Okinawa Island, Japan, in June-August 2000. The bell height ranged from 2.5 to 97.6 mm. The numbers of fine rings on polishedExpand
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