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 |
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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.
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 |