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Dinomischus is a rare fossil animal from the Cambrian period. It reached 20 mm in height, was attached to the sea floor by a stalk, and looked loosely like a flower. The cup-shaped body at the top of the stalk probably fed by filtering the surrounding seawater, and may have created a current to facilitate this. Its mouth and anus sat next to one another.

AttributesValues
rdf:type
rdfs:label
  • Dinomischus (en)
  • Dinomischus (es)
  • Dinomischus (fr)
  • Dinomischus (it)
  • ディノミスクス (ja)
  • Dinomischus (pt)
  • Dinomischus (uk)
rdfs:comment
  • Dinomischus est un genre éteint d'animaux qui vivaient fixés en fond de mer Cambrien moyen, il y a environ 505 Ma (millions d'années), et qui ont été fossilisés dans les schistes de Burgess en Colombie-Britannique. (fr)
  • ディノミスクス (Dinomischus) は、カンブリア紀中期に海中に生息していた固着性の動物。バージェス頁岩などから発見された、いわゆるバージェス動物群のひとつである。 全長2.5-10cm。漫画のチューリップの花のような形をしていて、長い柄とその先端に花形の体を持つ。柄の先端は多少球根の様な膨らみを持ち、この部分を泥に突き刺して生活していたと復元される。 本体部は円錐形で、上面は平らな円形をなし、その周囲に花びらのような多少幅広い触手と思われる構造が一列に並んでいる。この触手の列の内側に口と肛門が間隔を置いて並んでいて、その間には排出器らしい構造が開口していた。内部では消化管がUの字になり、筋肉でつり下げられていたらしい。 これらの構造は、現生の動物では内肛動物の特徴と一致する点が多いが、これらが近縁であるとの判断はなされていない。これらの特徴は固着性の動物に共通する特徴に近く、その類似性が収斂進化による可能性が高い。 なお、澄江動物群からも発見されているが、この標本では肛門らしい部分が管になって突き出ており、その先端は触手より長くなっている。 (ja)
  • Il dinomisco (gen. Dinomischus) è un misterioso animale estinto, vissuto nel Cambriano medio (circa 505 milioni di anni fa). I suoi resti sono stati rinvenuti in Canada, nel famoso giacimento di Burgess Shales. (it)
  • Dinomischus é um raro gênero de invertebrados marinhos extintos do Período Cambriano, na Era Paleozóica. Até agora ainda não se descobriu sua afinidade com nenhum dos filos atuais, sendo um gênero incertae sedis separado, que não é classificado em nenhum filo específico. Mediam em média 1 cm, provavelmente eram criaturas fixas e se alimentavam filtranto a água. Seus fósseis foram encontrados no Folhelho Burgess. (pt)
  • Dinomischus — викопний вид тварин нез'ясованого систематичного положення, що існував у кембрійському періоді (505 млн років тому). Скам'янілі відбитки тварини знайдені у берджеських сланцях у Британській Колумбії (Канада) та у в Китаї. (uk)
  • Dinomischus (del gr. dinos, «copa» y mischos, «tallo»)​ es un género extinto de animales del período Cámbrico. Era un organismo sésil que medía alrededor de 20 mm de altura,​ estaba unido al sustrato marino por medio de un tallo y poseía un aspecto vagamente similar al de una flor.​ Probablemente se alimentaba filtrando el agua circundante a través de corrientes unidireccionales. Fue descubierto en las primeras excavaciones en el esquisto de Burgess, realizadas por el paleontólogo Charles D. Walcott en la década de 1910. Pero no fue hasta en 1977, que Simon Conway Morris describió al animal. (es)
  • Dinomischus is a rare fossil animal from the Cambrian period. It reached 20 mm in height, was attached to the sea floor by a stalk, and looked loosely like a flower. The cup-shaped body at the top of the stalk probably fed by filtering the surrounding seawater, and may have created a current to facilitate this. Its mouth and anus sat next to one another. (en)
foaf:depiction
  • http://commons.wikimedia.org/wiki/Special:FilePath/Dinomischus_environnement.jpg
dcterms:subject
Wikipage page ID
Wikipage revision ID
Link from a Wikipage to another Wikipage
sameAs
subregnum
  • incertae sedis (en)
dbp:wikiPageUsesTemplate
thumbnail
genus
  • Dinomischus (en)
image caption
  • Reconstruction of two Dinomischus in their environment. (en)
regnum
  • Animalia (en)
subdivision
  • * D. isolatus * D. venustus (en)
subdivision ranks
type species
  • Dinomischus isolatus (en)
type species authority
  • Conway Morris, 1977 (en)
has abstract
  • Dinomischus is a rare fossil animal from the Cambrian period. It reached 20 mm in height, was attached to the sea floor by a stalk, and looked loosely like a flower. The cup-shaped body at the top of the stalk probably fed by filtering the surrounding seawater, and may have created a current to facilitate this. Its mouth and anus sat next to one another. In his pioneering excavations of the Burgess Shale, Charles Doolittle Walcott excavated the first, and at the time only, specimen. It had evidently caught his eye, for he had taken the trouble to carefully photograph it—but he never found the time to describe the organism, and it was not until 1977 that Simon Conway Morris described the animal. He tracked down two further specimens, collected by further expeditions by teams from Harvard and the Royal Ontario Museum, allowing him to produce a reconstruction. He was not able to say much about the organism. It consisted of a calyx (or body) on a long, thin stalk, surrounded by a whorl of 18 short "petals", which enclosed both openings of its U-shaped gut. The presence of this gut identified it as a metazoan, and the stem implied that it lived permanently attached to the sea floor by a small holdfast. The twenty or so "petals" borne by each organism were solid, plate-like structures, about two thirds the length of the calyx. It is speculated that they may have been covered with cilia—fine hairs—which would have wafted food down towards the organism's mouth. A number of affinities were considered, but on the basis of available evidence it didn't quite seem to fit into any extant phylum.The most similar organisms were the much smaller entoprocts, but even these modern organisms are difficult to classify. Further specimens have since been produced by similarly spectacular fossil sites in China. 13 have been found in the Chengjiang, then in 2006 one specimen was identified within the Kaili Formation. These organisms merited the erection of a new species, D. venustus, as their corrugated "petals" possessed radial rays. However, these new data have added little to the debate; while a suggestion of echinoderm affinity has been floated, no phyla are compellingly similar to the organism. Other modern ideas, even if a little tenuous, include a suggestion that the organism may have been parasitic, dwelling on the carapaces of larger organisms. 13 specimens of Dinomischus are known from the Greater Phyllopod bed, where they comprise < 0.1% of the community. Dinomischus is not the only sessile, stalked organism from the Cambrian, but it has no obvious relatives in other genera. Siphusauctum gregarium (known as the "tulip animal") has been recovered from the Burgess Shale, but has a clearly different basic anatomy, with multiple openings at the base of the calyx, an anus at the top, and a large six-petaled internal organ interpreted as a filter-feeding device. Dinomischus has also been likened to Eldonia and Velumbrella, although unlike Dinomischus these medusoid organisms have tentacles. (en)
  • Dinomischus (del gr. dinos, «copa» y mischos, «tallo»)​ es un género extinto de animales del período Cámbrico. Era un organismo sésil que medía alrededor de 20 mm de altura,​ estaba unido al sustrato marino por medio de un tallo y poseía un aspecto vagamente similar al de una flor.​ Probablemente se alimentaba filtrando el agua circundante a través de corrientes unidireccionales. Fue descubierto en las primeras excavaciones en el esquisto de Burgess, realizadas por el paleontólogo Charles D. Walcott en la década de 1910. Pero no fue hasta en 1977, que Simon Conway Morris describió al animal. Posteriormente, se hallaron dos especímenes más, recogidos por otras expediciones, los equipos de Harvard y el Museo Real de Ontario, lo que permitió producir una reconstrucción.​ Desde entonces, otros ejemplares han sido hallados en yacimientos de China, específicamente en Chengjiang. (es)
  • Dinomischus est un genre éteint d'animaux qui vivaient fixés en fond de mer Cambrien moyen, il y a environ 505 Ma (millions d'années), et qui ont été fossilisés dans les schistes de Burgess en Colombie-Britannique. (fr)
  • ディノミスクス (Dinomischus) は、カンブリア紀中期に海中に生息していた固着性の動物。バージェス頁岩などから発見された、いわゆるバージェス動物群のひとつである。 全長2.5-10cm。漫画のチューリップの花のような形をしていて、長い柄とその先端に花形の体を持つ。柄の先端は多少球根の様な膨らみを持ち、この部分を泥に突き刺して生活していたと復元される。 本体部は円錐形で、上面は平らな円形をなし、その周囲に花びらのような多少幅広い触手と思われる構造が一列に並んでいる。この触手の列の内側に口と肛門が間隔を置いて並んでいて、その間には排出器らしい構造が開口していた。内部では消化管がUの字になり、筋肉でつり下げられていたらしい。 これらの構造は、現生の動物では内肛動物の特徴と一致する点が多いが、これらが近縁であるとの判断はなされていない。これらの特徴は固着性の動物に共通する特徴に近く、その類似性が収斂進化による可能性が高い。 なお、澄江動物群からも発見されているが、この標本では肛門らしい部分が管になって突き出ており、その先端は触手より長くなっている。 (ja)
  • Il dinomisco (gen. Dinomischus) è un misterioso animale estinto, vissuto nel Cambriano medio (circa 505 milioni di anni fa). I suoi resti sono stati rinvenuti in Canada, nel famoso giacimento di Burgess Shales. (it)
  • Dinomischus é um raro gênero de invertebrados marinhos extintos do Período Cambriano, na Era Paleozóica. Até agora ainda não se descobriu sua afinidade com nenhum dos filos atuais, sendo um gênero incertae sedis separado, que não é classificado em nenhum filo específico. Mediam em média 1 cm, provavelmente eram criaturas fixas e se alimentavam filtranto a água. Seus fósseis foram encontrados no Folhelho Burgess. (pt)
  • Dinomischus — викопний вид тварин нез'ясованого систематичного положення, що існував у кембрійському періоді (505 млн років тому). Скам'янілі відбитки тварини знайдені у берджеських сланцях у Британській Колумбії (Канада) та у в Китаї. (uk)
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