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Statements

Subject Item
dbr:Trimerellida
rdf:type
dbo:Band yago:WikicatBrachiopods yago:Whole100003553 yago:PhysicalEntity100001930 yago:Animal100015388 yago:Organism100004475 yago:Invertebrate101905661 yago:LivingThing100004258 yago:Object100002684 yago:Brachiopod102315487
rdfs:label
Trimerellida
rdfs:comment
Trimerellida is an extinct order of craniate brachiopods, containing the superfamily Trimerelloidea and the families , Trimerellidae, and Ussuniidae. Trimerellidae is a small but widespread family of warm-water brachiopods ranging from the mid Ordovician (Llandeilo) to late Silurian (Ludlow). Adensuidae and Ussuniidae are monogeneric families restricted to the mid to late Ordovician (Llandeilo to lower Ashgill) of Kazakhstan.
foaf:depiction
n13:Estonian_Museum_of_Natural_History_Specimen_No_193492_photo_(g22_g22-93-1_2_jpg).jpg
dcterms:subject
dbc:Brachiopod_orders dbc:Prehistoric_animal_orders dbc:Prehistoric_brachiopods dbc:Craniata
dbo:wikiPageID
40369270
dbo:wikiPageRevisionID
1085295432
dbo:wikiPageWikiLink
dbr:Rhynchonelliformea dbc:Craniata dbr:Musculature dbr:Valve_(mollusc) dbr:Ussuniidae dbr:Brachiopod dbr:Adensuidae dbr:Trimerellidae dbr:Oyster_reef dbr:Family_(biology) dbr:Order_(biology) dbc:Brachiopod_orders dbc:Prehistoric_animal_orders dbr:Adductor_muscles_(bivalve) dbr:Kazakhstan dbr:Ludlow_epoch dbr:Extinction dbr:Silurian dbr:Aragonite dbr:Dinobolus_davidsoni dbr:Superfamily_(biology) dbc:Prehistoric_brachiopods dbr:Craniata_(brachiopod) dbr:Ordovician dbr:Estonia
owl:sameAs
yago-res:Trimerellida freebase:m.0wz1ld1 n14:eyLx wikidata:Q16907681
dbp:wikiPageUsesTemplate
dbt:Refend dbt:Paleo-protostome-stub dbt:Taxonbar dbt:Brachiopod_orders dbt:Automatic_taxobox dbt:Brachiopod-stub dbt:Short_description dbt:Fossil_range dbt:Refbegin dbt:Reflist
dbo:thumbnail
n13:Estonian_Museum_of_Natural_History_Specimen_No_193492_photo_(g22_g22-93-1_2_jpg).jpg?width=300
dbp:authority
Gorjansky & Popov, 1985
dbp:imageCaption
Dinobolus davidsoni, a trimerellid from the Silurian of Estonia
dbp:subdivision
*Trimerelloidea (Davidson & King, 1872) **Adensuidae (Popov & Rukavishnikova, 1986) **Trimerellidae (Davidson & King, 1872) **Ussuniidae (Nikitin & Popov, 1984)
dbp:subdivisionRanks
Subgroups
dbp:taxon
Trimerellida
dbo:abstract
Trimerellida is an extinct order of craniate brachiopods, containing the superfamily Trimerelloidea and the families , Trimerellidae, and Ussuniidae. Trimerellidae is a small but widespread family of warm-water brachiopods ranging from the mid Ordovician (Llandeilo) to late Silurian (Ludlow). Adensuidae and Ussuniidae are monogeneric families restricted to the mid to late Ordovician (Llandeilo to lower Ashgill) of Kazakhstan. Trimerellides were massive by the standards of early brachiopods. They had fairly smooth and unornamented shells which were probably aragonitic in composition. The shells were unequally biconvex (both valves convex to different degrees), in some cases nearly spherical in shape. There is no opening for the pedicle; individuals were free-living or clustered into congregations similar to modern oyster reefs. Trimerellides have some similarities to rhynchonelliform (articulate) brachiopods, including mixoperipheral shell growth (where the rear of each valve converges towards each other) and the development a fixed hinge between a wide plate on the dorsal valve and a socket-like groove on the ventral valve. Like other craniate brachiopods, the musculature consisted of two pairs of large and vertically-oriented adductor muscles (which close the shell) alongside two pairs of horizontally-oriented oblique muscles (which slide each valve past each other). The inner (internal) pair of oblique muscles extend nearly straight back to the dorsal valve hinge plate, in contrast to craniids and craniopsids, where the oblique internals splay out and attach besides the posterior adductors. A shelf is usually present near the middle of each valve, in front of the anterior adductors
gold:hypernym
dbr:Group
prov:wasDerivedFrom
wikipedia-en:Trimerellida?oldid=1085295432&ns=0
dbo:wikiPageLength
3682
foaf:isPrimaryTopicOf
wikipedia-en:Trimerellida