| dbo:abstract |
Unionopterus is a genus of eurypterid, an extinct group of aquatic arthropods commonly known as "sea scorpions". Fossils have been registered from the Early Carboniferous period. The genus contains only one species, U. anastasiae, recovered from deposits of Tournaisian to Viséan stages in Kazakhstan. Known from one single specimen (now presumed to be lost) which was described in a publication of Russian language with poor illustrations, Unionopterus' affinities are extremely poorly known. Unionopterus was described in 1948 after the discovery of its only known specimen in the of Kazakhstan (at that time part of the Soviet Union). This was one of the first discoveries of eurypterids in the Soviet Union and Carboniferous eurypterids in general. It was probably a swimming organism as well as other eurypterids, although not as good as its relatives. There are numerous factors that have made Unionopterus a problematic genus for eurypterid researchers. It has been placed in the family Adelophthalmidae and it has even been speculated that a species of Adelophthalmus, A. dumonti, actually belongs to Unionopterus, but this cannot be confirmed. Many authors have chosen to completely ignore the genus during phylogenetic studies, making Unionopterus an enigmatic eurypterid. (en) |
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dbr:Carboniferous dbr:Carcinosomatoidea dbr:Pterygotidae dbr:Scale_(anatomy) dbr:List_of_eurypterid_genera dbr:Mesosoma dbr:Metasoma dbr:Metastoma dbr:Basal_(phylogenetics) dbr:Belgium dbr:Devonian dbc:Carboniferous_animals_of_Asia dbc:Eurypterida dbr:Hughmilleria dbr:Viséan dbr:Deposition_(geology) dbr:Early_Carboniferous dbr:Incertae_sedis dbc:Controversial_taxa dbr:Anterior dbr:Russian_language dbr:Genus dbr:Geologist dbr:Outgroup_(cladistics) dbr:Opisthosoma dbr:Timeline_of_eurypterid_research dbr:Genera dbr:Morphology_(biology) dbr:Nanahughmilleria dbr:Telson dbr:Aquatic_locomotion dbc:Fossil_taxa_described_in_1948 dbr:Chitin dbr:Slimonia dbr:Suborder dbr:Spine_(zoology) dbr:Stage_(stratigraphy) dbc:Carboniferous_eurypterids dbc:Eurypterids_of_Asia dbr:Tournaisian dbr:Acutiramus dbr:Adelophthalmidae dbr:Adelophthalmus dbr:Anatomical_terms_of_location dbr:Eurypterid dbr:Eurypterus dbr:Extinct dbr:Paleontologist dbr:Parahughmilleria dbr:Benthic dbr:Family_(biology) dbr:Fossil dbr:Herefordopterus dbr:Jaekelopterus dbr:Arthropod dbr:Abdomen dbc:Fossils_of_Kazakhstan dbr:Chelicerae dbr:Karaganda dbr:Kazakhstan dbr:Biological_ornament dbr:Coal dbr:Thesis dbr:Diploperculata dbr:Arthropod_leg dbr:Borehole dbr:Phylogenetic dbr:Pittsfordipterus dbr:Soviet_Union dbr:Clade dbr:Cladogram dbr:Tergite dbr:Order_(biology) dbr:Xiphosura dbr:Species dbr:Seam_(geology) dbr:Segmentation_(biology) dbr:Nekton dbr:Compound_eyes dbr:Lateral_(anatomy) dbr:Ocelli dbr:Distal dbr:Prosoma dbr:Pterygotoidea dbr:Waterbody dbr:Podomere dbr:Adelophthalmid dbr:Adelophthalmoidea dbr:Waeringopteroid dbr:Waeringopteroidea dbr:Specific_epithet dbr:File:Adelophthalmus_irinae.png dbr:File:Unionopterus_anastasiae_opisthosomal_segments.png dbr:Karaganda_Formation |
| dbp:authority |
Chernyshev, 1948 (en) |
| dbp:caption |
Location of Karaganda in Kazakhstan, where the only known specimen of Unionopterus has been found (en) |
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2 (xsd:integer) |
| dbp:fossilRange |
Tournaisian-Viséan, (en) |
| dbp:image |
Unionopterus anastasiae carapace restoration.png (en) |
| dbp:image2Caption |
Restoration of the carapace and first body segment of U. anastasiae (en) |
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0.500000 (xsd:double) |
| dbp:imageCaption |
Type and only known specimen of U. anastasiae (en) |
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| dbp:label |
Karaganda (en) |
| dbp:relief |
yes (en) |
| dbp:taxon |
Unionopterus (en) |
| dbp:typeSpecies |
†Unionopterus anastasiae (en) |
| dbp:typeSpeciesAuthority |
Chernyshev, 1948 (en) |
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dbc:Carboniferous_animals_of_Asia dbc:Eurypterida dbc:Controversial_taxa dbc:Fossil_taxa_described_in_1948 dbc:Carboniferous_eurypterids dbc:Eurypterids_of_Asia dbc:Fossils_of_Kazakhstan |
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geo:SpatialThing |
| rdfs:comment |
Unionopterus is a genus of eurypterid, an extinct group of aquatic arthropods commonly known as "sea scorpions". Fossils have been registered from the Early Carboniferous period. The genus contains only one species, U. anastasiae, recovered from deposits of Tournaisian to Viséan stages in Kazakhstan. Known from one single specimen (now presumed to be lost) which was described in a publication of Russian language with poor illustrations, Unionopterus' affinities are extremely poorly known. (en) |
| rdfs:label |
Unionopterus (en) |
| owl:sameAs |
freebase:Unionopterus wikidata:Unionopterus https://global.dbpedia.org/id/4weNw |
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POINT(73.166664123535 49.833332061768) |
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49.833332 (xsd:float) |
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| prov:wasDerivedFrom |
wikipedia-en:Unionopterus?oldid=1070978402&ns=0 |
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wiki-commons:Special:FilePath/Adelophthalmus_irinae.png wiki-commons:Special:FilePath/Unionopterus_anastasiae_carapace_restoration.png wiki-commons:Special:FilePath/Unionopterus_anastasiae_fossil.png wiki-commons:Special:FilePath/Unionopterus_anastasiae_opisthosomal_segments.png |
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wikipedia-en:Unionopterus |
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dbr:Pruemopterus dbr:List_of_eurypterid_genera dbr:Timeline_of_eurypterid_research dbr:Adelophthalmidae dbr:Adelophthalmus dbr:Dorfopterus |
| is foaf:primaryTopic of |
wikipedia-en:Unionopterus |
