Pseudopetalichthyida (original) (raw)
Gli pseudopetalittidi (Pseudopetalichthyida) sono un piccolo ordine di pesci estinti appartenenti ai placodermi. Il gruppo è conosciuto esclusivamente attraverso fossili del Devoniano inferiore (circa 390 milioni di anni fa) del giacimento di Hunsruck, in Germania.
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| dbo:abstract | Pseudopetalichthyida is an extinct order of lightly armored placoderms known only from rare fossils in Lower Devonian strata in Hunsrück, Germany. Like Stensioella heintzi, and the Rhenanida, the Pseudopetalichthids had armor made up of a mosaic of tubercles. Like Stensioella heintzi, the Pseudopetalichthids' placement within Placodermi is suspect. However, due to a gross lack of whole, uncrushed, articulated specimens, there are no other groups that the Pseudopetalichthids could be, for a lack of a better word, pigeonholed into. On the other hand, according to anatomical studies done on the crushed specimens that have been found, those experts who do regard the Pseudopetalichthyida as placoderms consider them to be a group more advanced than the Ptyctodonts. And as such, pro-placoderm experts consider Pseudopetalichthyida to be the sister group of the Arthrodires + Phyllolepida + Antiarchi trichotomy and the Acanthothoraci + Rhenanida dichotomy. The best known species is the type species Pseudopetalicthys problematica. Some experts have suggested that Paraplesiobatis heinrichsi is the same species as P. problematica, but, due to the specimens of the latter species being crushed in a different position than the specimen of the former species, the anatomies of the two forms appear different (Moy-Thomas & Miles). However, this problem will be resolved only with more specimens. The anatomy of the specimens of Nessariostoma granulosum are sufficiently different from the other two pseudopetalichthyids to be recognized as a separate species. N. granulosum bears a superficial resemblance to Stensioella heintzi, and it was this resemblance that originally led to the pseudopetalichthyids' grouping within Stensioellidae. (en) Gli pseudopetalittidi (Pseudopetalichthyida) sono un piccolo ordine di pesci estinti appartenenti ai placodermi. Il gruppo è conosciuto esclusivamente attraverso fossili del Devoniano inferiore (circa 390 milioni di anni fa) del giacimento di Hunsruck, in Germania. (it) |
| dbo:class | dbr:Placodermi |
| dbo:kingdom | dbr:Animal |
| dbo:phylum | dbr:Chordata |
| dbo:thumbnail | wiki-commons:Special:FilePath/Pseudopetalichthyida.jpg?width=300 |
| dbo:wikiPageExternalLink | https://web.archive.org/web/20080113051549/http:/www.fmnh.helsinki.fi/users/haaramo/Metazoa/Deuterostoma/Chordata/Placodermi/Placodermi.htm |
| dbo:wikiPageID | 6120757 (xsd:integer) |
| dbo:wikiPageLength | 6282 (xsd:nonNegativeInteger) |
| dbo:wikiPageRevisionID | 1100478866 (xsd:integer) |
| dbo:wikiPageWikiLink | dbr:Pragian dbr:Devonian dbr:Hunsrück dbr:Pseudopetalichthys dbr:Eifelian dbr:Emsian dbr:Frasnian dbr:Givetian dbr:Animal dbr:Antiarchi dbr:Lochkovian dbr:Chordata dbr:Famennian dbr:Dichotomy dbc:Pseudopetalichthyida dbr:Rhenanida dbr:Speciation dbr:Stensioella_heintzi dbr:Acanthothoraci dbc:Prehistoric_fish_orders dbr:Placodermi dbr:Order_(biology) dbr:Nessariostoma dbr:Extinction dbr:Phyllolepida dbr:Placoderm dbr:Paraplesiobatis dbr:Type_species dbr:Pseudopetalicthys_problematica dbr:Ptyctodont dbr:Paraplesiobatis_heinrichsi dbr:Arthrodires dbr:Moy-Thomas,_J._A. dbr:Nessariostoma_granulosum |
| dbp:classis | dbr:Placodermi |
| dbp:familia | Paraplesiobatidae (en) |
| dbp:familiaAuthority | Berg 1940 (en) |
| dbp:fossilRange | dbr:Emsian |
| dbp:imageCaption | Artist's reconstructions (en) |
| dbp:ordo | Pseudopetalichthyida (en) |
| dbp:ordoAuthority | Denison 1975 (en) |
| dbp:phylum | dbr:Chordata |
| dbp:regnum | Animalia (en) |
| dbp:subdivision | *Pseudopetalichthys problematica† *Paraplesiobatis heinrichsi † *Nessariostoma granulosa † (en) |
| dbp:subdivisionRanks | Species (en) |
| dbp:wikiPageUsesTemplate | dbt:ISBN dbt:Taxobox dbt:Taxonbar dbt:Placodermi |
| dcterms:subject | dbc:Pseudopetalichthyida dbc:Prehistoric_fish_orders |
| gold:hypernym | dbr:Order |
| rdf:type | owl:Thing wikidata:Q19088 wikidata:Q729 dbo:Animal dbo:Eukaryote dbo:Species yago:Animal100015388 yago:AquaticVertebrate101473806 yago:Chordate101466257 yago:LivingThing100004258 yago:Object100002684 yago:Organism100004475 yago:PhysicalEntity100001930 yago:Placoderm101480106 dbo:Insect yago:Vertebrate101471682 yago:Whole100003553 yago:WikicatPlacoderms |
| rdfs:comment | Gli pseudopetalittidi (Pseudopetalichthyida) sono un piccolo ordine di pesci estinti appartenenti ai placodermi. Il gruppo è conosciuto esclusivamente attraverso fossili del Devoniano inferiore (circa 390 milioni di anni fa) del giacimento di Hunsruck, in Germania. (it) Pseudopetalichthyida is an extinct order of lightly armored placoderms known only from rare fossils in Lower Devonian strata in Hunsrück, Germany. Like Stensioella heintzi, and the Rhenanida, the Pseudopetalichthids had armor made up of a mosaic of tubercles. Like Stensioella heintzi, the Pseudopetalichthids' placement within Placodermi is suspect. However, due to a gross lack of whole, uncrushed, articulated specimens, there are no other groups that the Pseudopetalichthids could be, for a lack of a better word, pigeonholed into. (en) |
| rdfs:label | Pseudopetalichthyida (en) Pseudopetalichthyida (it) |
| owl:sameAs | freebase:Pseudopetalichthyida yago-res:Pseudopetalichthyida wikidata:Pseudopetalichthyida dbpedia-fa:Pseudopetalichthyida dbpedia-it:Pseudopetalichthyida https://global.dbpedia.org/id/3dgxD |
| prov:wasDerivedFrom | wikipedia-en:Pseudopetalichthyida?oldid=1100478866&ns=0 |
| foaf:depiction | wiki-commons:Special:FilePath/Pseudopetalichthyida.jpg |
| foaf:isPrimaryTopicOf | wikipedia-en:Pseudopetalichthyida |
| is dbo:order of | dbr:Pseudopetalichthys dbr:Nessariostoma dbr:Paraplesiobatis |
| is dbo:wikiPageWikiLink of | dbr:List_of_chordate_orders dbr:Pseudopetalichthys dbr:Acanthothoraci dbr:Placodermi dbr:Nessariostoma dbr:Paraplesiobatis |
| is dbp:ordo of | dbr:Pseudopetalichthys dbr:Nessariostoma dbr:Paraplesiobatis |
| is foaf:primaryTopic of | wikipedia-en:Pseudopetalichthyida |
