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	Provedor de dados 16 (2) Autor Elfimov, Alexei S. (1) Høeg, Jens T. (1) Kolbasov, Gregory A. (1) Lange, Sven (1) Schram, Frederick R. (1) Palavra-chave Ascothoracida (2) Cirripedia (2) Acrothoracica (1) Cretaceous (1) Crustacea (1) Cypris larva (1) Fossils (1) Larval characters (1) Lattice organ. (1) Lattice organs (1) Morphology (1) Phylogenetic relationships (1) SEM (1) Thecostraca (1) Thylacocephala (1) Mais... Tipo do documento Article / Letter to the editor (2) Ano 2002 (1) 1999 (1) País Netherlands (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Possible lattice organs in Cretaceous Thylacocephala 16 Lange, Sven; Schram, Frederick R.. Structures, reminiscent of the lattice organs in thecostracan crustaceans, are described from the carapace cuticle of Cretaceous thylacocephalans. The new lattice organ like structures occur in pairs along the dorsal midline. While these have a similar outline to true lattice organs, they seem to lack pores and do not occur in the highly apomorphic pattern found in thecostracans. These discrepancies do not easily support earlier ideas of a position of the thylacocephalans within the thecostracans. The significance of the possible lattice organs for inferring a relationship between thylacocephalans and thecostracans is discussed. Tipo: Article / Letter to the editor Palavras-chave: Thylacocephala; Fossils; Lattice organs; Thecostraca; Cirripedia; Ascothoracida; Crustacea; Cretaceous. Ano: 2002 URL: http://www.repository.naturalis.nl/record/534362 Scanning electron microscopy of acrothoracican cypris larvae (Crustacea, Thecostraca, Cirripedia, Acrothoracica, Lithoglyptidae) 16 Kolbasov, Gregory A.; Høeg, Jens T.; Elfimov, Alexei S.. Scanning electron microscopy was used to provide a full morphological description of cypris morphology in the acrothoracican species Lithoglyptes milis and L. habei (Lithoglyptidae). Special attention was given to lattice organs, antennules, thorax, thoracopods, abdomen, and furcal rami. Cypris larvae of the Acrothoracica share some putative plesiomorphic features with the cypris-like ascothoracid larvae of the non-cirripede taxon Ascothoracida. The most notable are traces of abdominal segmentation and carapace lattice organs without pore fields. Acrothoracican cyprids also share numerous synapomorphies with those of the Thoracica and the Rhizocephala. This list includes a four-segmented antennule with a triangular first segment of two sclerites set at an... Tipo: Article / Letter to the editor Palavras-chave: Cirripedia; Acrothoracica; Ascothoracida; Cypris larva; Morphology; Lattice organ.; SEM; Phylogenetic relationships; Larval characters. Ano: 1999 URL: http://www.repository.naturalis.nl/record/534290 Registros recuperados: 2 Primeira ... 1 ... Última

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