AnimaliaacceptedgenusAccepted
Xenotrypa
Bassler, 1952
GBIF:196202607
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ABOUT
Descriptions(5)
COMPARISON
Ernst, Andrej, Carrera, Marcelo G. (2022): A cool-water bryozoan association from the La Pola Formation (Sandbian, Ordovician) of Argentine Precordillera. Geodiversitas 44 (20): 563-601, DOI: 10.5252/geodiversitas2022v44a20
DIAGNOSIS. — Massive or encrusting colonies. Autozooecia slightly indented by acanthostyles. Diaphragms in autozooecia few to absent. Vesicles irregular, isolating autozooecia. Acanthostyles large, generally in autozooecial walls, some in vesicle walls; centres light to dark in colour. Autozooecial walls indistinctly laminated.
Ernst, Andrej, Carrera, Marcelo G. (2022): A cool-water bryozoan association from the La Pola Formation (Sandbian, Ordovician) of Argentine Precordillera. Geodiversitas 44 (20): 563-601, DOI: 10.5252/geodiversitas2022v44a20
Xenotrypa Bassler, 1952 differs from Hennigopora Bassler, 1952 in acanthostyles which do not significantly indent into the autozooecia, whereas acanthostyles in Hennigopora strongly indent autozooecia. Furthermore, vesicles usually completely isolate autozooecia in Xenotrypa, whereas the autozooecia in Hennigopora often share a common wall.
Ernst, Andrej, Carrera, Marcelo G. (2022): A cool-water bryozoan association from the La Pola Formation (Sandbian, Ordovician) of Argentine Precordillera. Geodiversitas 44 (20): 563-601, DOI: 10.5252/geodiversitas2022v44a20
OCCURRENCE. — Lower to Middle Ordovician of Russia and Argentina.
Ernst, Andrej, Carrera, Marcelo G. (2022): A cool-water bryozoan association from the La Pola Formation (Sandbian, Ordovician) of Argentine Precordillera. Geodiversitas 44 (20): 563-601, DOI: 10.5252/geodiversitas2022v44a20
TYPE SPECIES. — Fistulipora primaeva Bassler, 1911 by subsequent designation (Bassler 1952). Lower Ordovician (? Arenig); Russia.
Ernst, Andrej, Carrera, Marcelo G. (2022): A cool-water bryozoan association from the La Pola Formation (Sandbian, Ordovician) of Argentine Precordillera. Geodiversitas 44 (20): 563-601, DOI: 10.5252/geodiversitas2022v44a20
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CLASSIFICATION
Taxonomic Classification Tree
HIERARCHY