Lingulata - Acrotretida - Acrotretidae
Parent taxon: Acrotretidae according to J. Hansen and L. E. Holmer 2011
See also Sepkoski 2002 and Williams et al. 2000
Sister taxa: Acrotreta, Acrotretinae, Amictocracens, Anabolotreta, Anelotreta, Angulotreta, Aphelotreta, Apsotreta, Araktina, Biernatinae, Brachaktassia, Canthylotreta, Conotreta, Cyrtonotreta, Dactylotreta, Dicondylotreta, Ditreta, Eohadrotreta, Eurytreta, Fascicoma, Genetreta, Hansotreta, Hisingerella, Homotreta, Iberotreta, Kostjubella, Kotylotreta, Kuangshanotreta, Lensotreta, Linnarssonella, Linnarssonia, Linnarssoniinae, Longipegma, Neotreta, Olentotreta, Opisthotreta, Ottenbyella, Physotreta, Picnotreta, Prototreta, Quadrisonia, Rhondellina, Satpakella, Scaphelasmatinae, Spondylotreta, Stilpnotreta, Tapuritreta, Torynelasmatinae, Treptotreta, Vandalotreta
Subtaxa: Semitreta basisslettaensis Semitreta major Semitreta pustulosa Semitreta spitsbergensis
Type: Semitreta major
Ecology: stationary epifaunal suspension feeder
Distribution:
• Ordovician of Mexico (1 collection), Norway (6), Poland (1)
Total: 8 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.