Romundina (original) (raw)
Romundina stellina es una especie extinta de placodermo de la familia que vivió durante el Devónico Inferior en Canadá. Un análisis filogenético y morfológico realizado por Dupret et al. (2014) sugiere que está relacionado con miembros basales del clado Arthrodira.
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| dbo:abstract | Romundina stellina es una especie extinta de placodermo de la familia que vivió durante el Devónico Inferior en Canadá. Un análisis filogenético y morfológico realizado por Dupret et al. (2014) sugiere que está relacionado con miembros basales del clado Arthrodira. (es) Romundina est un genre éteint de placodermes, ayant vécu au Lochkovien, premier étage géologique du Dévonien inférieur, il y a environ entre 419 et 411 Ma (millions d'années) dans l'actuel archipel arctique canadien. Le genre a été décrit en 1975 par le paléontologue suédois (d) et nommé en l'honneur du géologue canadien Raymond Thorsteinsson. Une seule espèce est connue, Romundina stellina. (fr) Romundina is a small, heavily armored extinct genus of acanthothoracid placoderms which lived in shallow marine environments in the early Devonian (Lochkovian). The name Romundina honors Canadian geologist and paleontologist Dr. Rómundur (Raymond) Thorsteinsson of Calgary, Alberta, Canada. Romundina are believed to have lived on Earth between 400 and 419 million years ago. The closest known relative to Romundina is the acanthothoracid Radotina. The type and only described species is R. stellina. The first specimen of Romundina was originally discovered by Swedish paleontologist Tor Ørvig in 1975 on Prince of Wales Island (Nunavut) in a formation that geologically dates back to the Gedinnian. Only one known species of Romundina has been discovered which was named Romundina stellina by Ørvig. The species name stellina refers to stellate (derived from Latin word stella meaning star) tubercles that the Placoderm has ornamenting its dermal skeleton. Romundina stellina is one of the earliest known acanthothoraciforms discovered to date. Recently, Romundina stellina has been heavily researched as it shows signs of having extremely primitive teeth, which structurally share characteristics of both dermal tubercles and the teeth of modern and fossil gnathostomes. Although Romundina are known to be relatively small especially when compared to some large predatory placoderms of the time, it is still thought to be carnivorous due to the tooth-like structures on its gnathal and supragnathal plates. Romundina shares many characteristics of both cyclostomes and Gnathostomes to varying degrees. This reinforces the hypothesis that placoderms are a grade as they have some features more closely related to cyclostomes then other placoderms while other features are much more closely related to crown group Gnathostomes. (en) |
| dbo:thumbnail | wiki-commons:Special:FilePath/Romundina_stellina.jpg?width=300 |
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| dbo:wikiPageWikiLink | dbr:Prince_of_Wales_Island_(Nunavut) dbr:Ptyctodontida dbr:Enameloid dbr:Devonian dbc:Placoderm_genera dbr:Vertebrate dbr:Limestone dbr:Peel_Sound_Formation dbr:Coral dbr:Cranium dbc:Devonian_Canada dbr:Nature_(journal) dbr:Occlusion_(dentistry) dbr:National_Museum_of_Natural_History_(France) dbr:Entelognathus dbr:Galeaspida dbr:Gastropoda dbr:Geologic_time_scale dbr:Geology dbr:Gnathostomata dbr:Convergent_evolution dbr:Antiarchi dbr:Lochkovian dbr:Silurian dbr:Dentin dbr:Cephalopod dbr:Traquairaspis dbr:Dolomite_(rock) dbr:Acetic_acid dbr:Cyclostomata dbr:Early_Devonian dbr:Earth dbr:Althaspis dbr:Formic_acid dbr:Brindabellaspis dbr:Norwegians dbr:Osteostraci dbr:Paleozoic dbr:Reef dbr:Teeth dbr:Telencephalon dbr:Hypothesis dbr:Arthrodira dbc:Fossils_of_Canada dbr:Acanthothoraci dbc:Acanthothoracids dbc:Devonian_animals_of_North_America dbc:Fossil_taxa_described_in_1975 dbc:Placoderms_of_North_America dbr:Jaw dbc:Lochkovian_life dbr:Phylogenetic_tree dbr:Placodermi dbr:Radotina dbr:Raymond_Thorsteinsson dbr:X-ray dbr:Extinction dbr:Placoderm dbr:Pinnaspis dbr:Paleobiology dbr:Tor_Ørvig dbr:Type_species dbr:File:Romundina_Orvig.png dbr:File:Stellate_Tubercles.png dbr:Reed_Bay_Formation |
| dbp:authority | Ørvig, 1975 (en) |
| dbp:fossilRange | dbr:Early_Devonian ~ (en) |
| dbp:imageCaption | Artist's reconstruction (en) |
| dbp:parentAuthority | Ørvig, 1975 (en) |
| dbp:taxon | Romundina stellina (en) |
| dbp:wikiPageUsesTemplate | dbt:Clade dbt:Reflist dbt:Short_description dbt:Speciesbox dbt:Taxonbar dbt:When dbt:Fossil_range dbt:Placodermi dbt:Clade_sequential |
| dcterms:subject | dbc:Placoderm_genera dbc:Devonian_Canada dbc:Fossils_of_Canada dbc:Acanthothoracids dbc:Devonian_animals_of_North_America dbc:Fossil_taxa_described_in_1975 dbc:Placoderms_of_North_America dbc:Lochkovian_life |
| rdfs:comment | Romundina stellina es una especie extinta de placodermo de la familia que vivió durante el Devónico Inferior en Canadá. Un análisis filogenético y morfológico realizado por Dupret et al. (2014) sugiere que está relacionado con miembros basales del clado Arthrodira. (es) Romundina est un genre éteint de placodermes, ayant vécu au Lochkovien, premier étage géologique du Dévonien inférieur, il y a environ entre 419 et 411 Ma (millions d'années) dans l'actuel archipel arctique canadien. Le genre a été décrit en 1975 par le paléontologue suédois (d) et nommé en l'honneur du géologue canadien Raymond Thorsteinsson. Une seule espèce est connue, Romundina stellina. (fr) Romundina is a small, heavily armored extinct genus of acanthothoracid placoderms which lived in shallow marine environments in the early Devonian (Lochkovian). The name Romundina honors Canadian geologist and paleontologist Dr. Rómundur (Raymond) Thorsteinsson of Calgary, Alberta, Canada. Romundina are believed to have lived on Earth between 400 and 419 million years ago. The closest known relative to Romundina is the acanthothoracid Radotina. The type and only described species is R. stellina. (en) |
| rdfs:label | Romundina stellina (es) Romundina (fr) Romundina (en) |
| owl:sameAs | freebase:Romundina wikidata:Romundina dbpedia-es:Romundina dbpedia-fr:Romundina https://global.dbpedia.org/id/aCa1 yago-res:Romundina |
| prov:wasDerivedFrom | wikipedia-en:Romundina?oldid=1085956420&ns=0 |
| foaf:depiction | wiki-commons:Special:FilePath/Romundina_Orvig.png wiki-commons:Special:FilePath/Romundina_stellina.jpg wiki-commons:Special:FilePath/Stellate_Tubercles.png |
| foaf:isPrimaryTopicOf | wikipedia-en:Romundina |
| is dbo:wikiPageRedirects of | dbr:Romundina_stellina |
| is dbo:wikiPageWikiLink of | dbr:List_of_placoderm_genera dbr:Romundina_stellina dbr:2014_in_fish_paleontology dbr:2017_in_paleoichthyology dbr:Acanthothoraci |
| is foaf:primaryTopic of | wikipedia-en:Romundina |
