Leptotrypella Vinassa de Regny, 1921
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https://doi.org/10.5252/g2012n4a1 |
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https://treatment.plazi.org/id/03A6D074-FFFA-7E06-FF63-FAABFCACFD91 |
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Marcus (2021-08-30 02:41:39, last updated by Plazi 2023-11-05 20:40:30) |
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Leptotrypella Vinassa de Regny, 1921 |
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Genus Leptotrypella Vinassa de Regny, 1921 View in CoL
TYPE SPECIES. — Chaetetes barrandei Nicholson, 1874 , by subsequent designation ( Vinassa de Regny 1921). Middle Devonian ; Ontario ( Canada) .
OCCURRENCE. — Middle Silurian to Lower Carboniferous; worldwide.
DIAGNOSIS. — Branched colonies. Autozooecia with polygonal to rounded-polygonal apertures. Autozooecial diaphragms lacking in endozones; rare to common in exozones. Exilazooecia rare. Acanthostyles long, common to abundant. Autozooecial walls granular, thin in endozones; laminated, irregularly thickened in exozones (modified after Astrova 1978).
COMPARISON
Leptotrypella Vinassa de Regny, 1921 differs from Leptotrypa Ulrich, 1883 View in CoL in having branched colonies, and from Anomalotoechus Duncan, 1939 View in CoL in having branched colonies and lacking diaphragms in endozones.
VINASSA DE REGNY P. 1921. - Sulla classificazione die trepostomidi. Societa Italiana di Scienze Naturali Atti 59: 212 - 231.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Leptotrypella Vinassa de Regny, 1921
| Ernst, Andrej, Fernández, Luis Pedro, Fernández-Martínez, Esperanza & Vera, Carmen 2012 |
Anomalotoechus
| Duncan 1939 |
Leptotrypella
| Vinassa de Regny 1921 |
Leptotrypa
| Ulrich 1883 |