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Statements

Subject Item
dbr:Chancelloriidae
rdf:type
yago:WikicatBurgessShaleFossils yago:YagoLegalActor yago:YagoLegalActorGeo yago:Adult109605289 yago:Object100002684 yago:LivingThing100004258 yago:Whole100003553 yago:Dodo110022908 yago:CausalAgent100007347 yago:Oldster110376523 yago:Person100007846 yago:Organism100004475 yago:PhysicalEntity100001930
rdfs:label
Chancelloriidae Chancelloriidae Chancelloriidae
rdfs:comment
The Chancelloriids are an extinct family of superficially sponge-like animals common in sediments from the Early Cambrian to the early Late Cambrian. Many of these fossils consists only of spines and other fragments, and it is not certain that they belong to the same type of organism. Other specimens appear to be more complete and to represent sessile, radially symmetrical hollow bag-like organisms with a soft skin armored with star-shaped calcareous sclerites from which radiate sharp spines. Chancelloriidae é uma família de animais fósseis do período Cambriano de posição taxonômica incerta. Foram descritos pela primeira vez em 1920 por Charles Doolittle Walcott que os considerou como um grupo primitivo de esponjas. Restos fósseis da família foram encontrados no Canadá, Estados Unidos, Rússia, China, Austrália, Espanha, Marrocos e Antártida. Gêneros reconhecidos: Die Chancelloriidae (seltener auch Chancelloridae geschrieben) sind eine ausgestorbene Familie des Tierreichs (von späteren Autoren teilweise auch im Rang einer Ordnung geführt), die in Sedimenten des Unterkambriums erstmals auftreten und bis ins frühe Oberkambrium verbreitet waren. Ihre taxonomische Zuordnung ist schwierig, sie könnten aber in die Nähe von Schwämmen gerückt werden. Auch mit den Halkieriidae bestehen Gemeinsamkeiten in der Form der Skelettnadeln.
foaf:depiction
n7:Chancelloria_pentacta_cambr_med_utah.jpg n7:Allonnia_pennetta.png n7:Chancelloria_eros_fossil,_Middle_Cambrian,_Millard_County_UT.jpg n7:Halkieriid_sclerite_structure_300.png
dcterms:subject
dbc:Cambrian_invertebrates dbc:Burgess_Shale_animals
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1122082843
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dbr:Porifera dbr:Dilemma dbr:Small_shelly_fossils dbr:Mollusca dbr:Sclerosponge dbr:Siberia dbr:Phosphate dbr:Collagen dbr:Asia dbr:Protohertzina dbr:Paleontology dbr:Bilaterian dbr:Calcite dbr:Echinoderm dbr:Multicellular dbr:Sclerocyte dbr:Crystal dbr:Kinorhynch dbr:Epitheliazoa dbr:Allonnia dbr:Monophyletic dbr:Halkieriid dbr:Sponge dbr:Spongin dbr:Desmosome dbr:Calcium_carbonate dbr:Species dbr:Coeloscleritophora dbr:Demosponge dbr:Cacti dbr:Eumetazoa dbr:Darwinella_(sponge) dbc:Cambrian_invertebrates dbr:Pinacoderm dbr:Protein n21:Chancelloria_eros_fossil,_Middle_Cambrian,_Millard_County_UT.jpg dbr:Calcareous dbr:Taxon dbr:Silica dbr:Secretion dbr:Right_angle dbc:Burgess_Shale_animals dbr:Slug dbr:Sclerite dbr:Sponges dbr:Casting dbr:Filter_feeder dbr:Mongolia dbr:Priapulid dbr:Meishucunian dbr:Aragonite dbr:Chain_mail dbr:Filter_feeders dbr:Charles_Doolittle_Walcott dbr:Body_orifice dbr:Burgess_Shale dbr:Radially_symmetrical dbr:Germ_layer dbr:Sessility_(zoology) dbr:Kimberella dbr:Chancelloria dbr:Nemakit-Daldynian dbr:Genus dbr:Tissue_(biology)
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wikidata:Q5070812 freebase:m.03h1xw2 dbpedia-de:Chancelloriidae n19:4gyut yago-res:Chancelloriidae dbpedia-pt:Chancelloriidae
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dbt:= dbt:Ma dbt:Short_description dbt:Reflist dbt:Convert dbt:Fossil_range dbt:Taxonbar dbt:Linked_genus_list dbt:Annotated_image dbt:Cite_journal dbt:Annotation dbt:Automatic_taxobox
dbo:thumbnail
n7:Chancelloria_pentacta_cambr_med_utah.jpg?width=300
dbp:imageLeft
10
dbp:imageTop
10
dbp:authority
Walcott, 1920
dbp:caption
Coelosclerite structure. This diagram is from a microscopic examination of a halkieriid sclerite, but the internal structures of chancelloriid sclerites are almost identical despite the difference in external shapes.
dbp:float
right
dbp:height
153
dbp:image
Allonnia pennetta.png
dbp:imageCaption
Chancelloria
dbp:subdivisionRanks
Genera
dbp:taxon
Chancelloriidae
dbp:width
300
dbo:abstract
Chancelloriidae é uma família de animais fósseis do período Cambriano de posição taxonômica incerta. Foram descritos pela primeira vez em 1920 por Charles Doolittle Walcott que os considerou como um grupo primitivo de esponjas. Restos fósseis da família foram encontrados no Canadá, Estados Unidos, Rússia, China, Austrália, Espanha, Marrocos e Antártida. Gêneros reconhecidos: * Jiang in Luo et al., 1982 * ? He & Xie, 1989 * Walcott, 1920 [=Fangxianites Duan, 1984; =Actinoites Duan, 1984; =?Monospinites Sayutina in Vassiljeva et Sayutina, 1988; =Stellaria Vassiljeva, 1985; =Stellispinella Vassiljeva in Vassiljeva et Sayutina, 1993] * Doré & Reid, 1965 [=Dimidia Jiang in Luo et al., 1982; =Onychia Jiang in Luo et al., 1982; =Rosella Vassiljeva in Vassiljeva et Sayutina, 1988; =Zhurinia Missarzhevsky, 1989] * Sdzuy, 1969 [=Aldania Vassiljeva, 1985] * Vassiljeva, 1985 * Vassiljeva in Vassiljeva et Sayutina, 1988 * Missarzhevsky, 1989 * Bengtson & Conway Morris in Bengtson et al., 1990 * Demidenko, 2000 * Demidenko in Gravestock et al., 2001 The Chancelloriids are an extinct family of superficially sponge-like animals common in sediments from the Early Cambrian to the early Late Cambrian. Many of these fossils consists only of spines and other fragments, and it is not certain that they belong to the same type of organism. Other specimens appear to be more complete and to represent sessile, radially symmetrical hollow bag-like organisms with a soft skin armored with star-shaped calcareous sclerites from which radiate sharp spines. Classifying the chancelloriids is difficult. Some paleontologists classify them as sponges, an idea which chancelloriids' sessile lifestyle and simple structure make plausible. Other proposals suggest that they were more advanced, or at least originated from more advanced ancestors; for example chancelloriids' skins appear to be much more complex than those of any sponge. It has been suggested that chancelloriids were related to the "chain mail" armored slug-like halkieriids, which are typically considered to be stem-group molluscs. While the sclerites of the two groups are very similar right down to the microscopic level, the large dissimilarity in the body plans of the two groups is difficult to reconcile with this hypothesis. The proposed clade containing the two groups, "Coeloscleritophora", is generally not thought to be monophyletic. Recent research has suggested that chancellorids represent an independent group of basal eumetazoans. Die Chancelloriidae (seltener auch Chancelloridae geschrieben) sind eine ausgestorbene Familie des Tierreichs (von späteren Autoren teilweise auch im Rang einer Ordnung geführt), die in Sedimenten des Unterkambriums erstmals auftreten und bis ins frühe Oberkambrium verbreitet waren. Ihre taxonomische Zuordnung ist schwierig, sie könnten aber in die Nähe von Schwämmen gerückt werden. Auch mit den Halkieriidae bestehen Gemeinsamkeiten in der Form der Skelettnadeln.
dbp:image2Caption
Life restoration of Allonnia
gold:hypernym
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17904
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