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IRMNG taxon detailsEllesmerella Mamet & Roux in Mamet et al., 1987 †
marine,
fossil only
Not documented
Taxonomic remark From Vachard et al., 2015: interpreted as an atypical foraminifer by Vachard and Krainer (2001b). ... The girvanellacean...
Taxonomic remark From Vachard et al., 2015: interpreted as an atypical foraminifer by Vachard and Krainer (2001b). ... The girvanellacean nature of this taxon thus might be definitely abandoned, because the wall of this cyanobacterial group is dark-microgranular, but never porcelaneous; a type of wall apparently only known among the miliolate foraminifers. Ellesmerella is therefore more similar to nubeculariid foraminifers than girvanellacean trichomes. Ellesmerella is probably present in the literature under several names: Girvanella auctorum (partim), Nubecularioidea (partim), Osagia (partim), Ottonosia (partim), and Clinortonella Vachard and Moix, 2013. If Ellesmerella was easily confused with cyanobacteria (Girvanella, Clinoortonella, etc.), that is probably because porcelaneous walls are very rarely preserved (as in the Zweikofel Formation of the Carnic Alps; Vachard and Krainer, unpublished data), and because, almost always, it diagenetically becomes microgranular and similar to an ontogenic girvanellacean wall. [details]
IRMNG (2023). Ellesmerella Mamet & Roux in Mamet et al., 1987 †. Accessed at: https://irmng.org/aphia.php?p=taxdetails&id=11928489 on 2024-06-20
Date action by
basis of record
Vachard, D.; Krainer, K.; Lucas, S. (2015). Late Early Permian (late Leonardian; Kungurian) algae, microproblematica, and smaller foraminifers from the Yeso Group and San Andres Formation (New Mexico; USA). <em>Palaeontologia Electronica.</em> 18(1): 1-77., available online at https://doi.org/10.26879/433 [details]
verified source for family Vachard, D.; Krainer, K.; Lucas, S. (2015). Late Early Permian (late Leonardian; Kungurian) algae, microproblematica, and smaller foraminifers from the Yeso Group and San Andres Formation (New Mexico; USA). <em>Palaeontologia Electronica.</em> 18(1): 1-77., available online at https://doi.org/10.26879/433 note: as Kingdom indeterminate, Class, Order and Family incertae sedis [details] name verified source Vachard, D.; Krainer, K.; Lucas, S. (2015). Late Early Permian (late Leonardian; Kungurian) algae, microproblematica, and smaller foraminifers from the Yeso Group and San Andres Formation (New Mexico; USA). <em>Palaeontologia Electronica.</em> 18(1): 1-77., available online at https://doi.org/10.26879/433 [details] current name source Vachard, D.; Krainer, K.; Lucas, S. (2015). Late Early Permian (late Leonardian; Kungurian) algae, microproblematica, and smaller foraminifers from the Yeso Group and San Andres Formation (New Mexico; USA). <em>Palaeontologia Electronica.</em> 18(1): 1-77., available online at https://doi.org/10.26879/433 [details] extant flag source Vachard, D.; Krainer, K.; Lucas, S. (2015). Late Early Permian (late Leonardian; Kungurian) algae, microproblematica, and smaller foraminifers from the Yeso Group and San Andres Formation (New Mexico; USA). <em>Palaeontologia Electronica.</em> 18(1): 1-77., available online at https://doi.org/10.26879/433 [details] habitat flag source Vachard, D.; Krainer, K.; Lucas, S. (2015). Late Early Permian (late Leonardian; Kungurian) algae, microproblematica, and smaller foraminifers from the Yeso Group and San Andres Formation (New Mexico; USA). <em>Palaeontologia Electronica.</em> 18(1): 1-77., available online at https://doi.org/10.26879/433 [details] From other sources
Taxonomic remark From Vachard et al., 2015: interpreted as an atypical foraminifer by Vachard and Krainer (2001b). ... The girvanellacean nature of this taxon thus might be definitely abandoned, because the wall of this cyanobacterial group is dark-microgranular, but never porcelaneous; a type of wall apparently only known among the miliolate foraminifers. Ellesmerella is therefore more similar to nubeculariid foraminifers than girvanellacean trichomes. Ellesmerella is probably present in the literature under several names: Girvanella auctorum (partim), Nubecularioidea (partim), Osagia (partim), Ottonosia (partim), and Clinortonella Vachard and Moix, 2013. If Ellesmerella was easily confused with cyanobacteria (Girvanella, Clinoortonella, etc.), that is probably because porcelaneous walls are very rarely preserved (as in the Zweikofel Formation of the Carnic Alps; Vachard and Krainer, unpublished data), and because, almost always, it diagenetically becomes microgranular and similar to an ontogenic girvanellacean wall. [details]
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