Praebythoceratina trinodosa ( Alexander, 1934 ) Antonietto & Carmo & Viviers & Neto & Hunt, 2016
publication ID |
https://doi.org/ 10.5852/ejt.2016.244 |
publication LSID |
lsid:zoobank.org:pub:D26E7E13-35AB-422A-B929-01AEBA7AB0A4 |
DOI |
https://doi.org/10.5281/zenodo.3854466 |
persistent identifier |
https://treatment.plazi.org/id/039CBA07-FFE3-FFF0-AA9A-FC165C6DFE78 |
treatment provided by |
Valdenar |
scientific name |
Praebythoceratina trinodosa ( Alexander, 1934 ) |
status |
comb. nov. |
Praebythoceratina trinodosa ( Alexander, 1934) View in CoL comb. nov.
Fig. 6 K–M
Monoceratina trinodosa Alexander, 1934: p. 64 View in CoL , fig. 8.10.
New material examined
BRAZIL: São José 1 outcrop, Riachuelo Municipality, Sergipe State (samples MP-1550, MP-1552 to MP-1554, MP-1558, MP-1563 to MP-1565, MP-1571 and MP-1574 to MP-1576), approximate coordinates 10°44' S, 37°13' W.
Type locality and stratum
Fort Worth, Texas, United States; Weno Formation, upper Albian.
Measurements
Homeotype (CP-690): carapace: length = 0.42 mm, height = 0.22 mm, width = 0.22 mm. Homeotype (CP-691): right valve: length = 0.47 mm, height = 0.25 mm.
Homeotype (CP-692): left valve: length = 0.48 mm, height = 0.22 mm.
Homeotype (CP-693): right valve: length = 0.49 mm, height = 0.24 mm.
Remarks
The generic identification follows Becker (1990), while the specific follows Alexander (1934). Despite being poorly preserved, the holotype of Praebythoceratina trinodosa ( Alexander, 1934) comb. nov. presents typical morphological traits that are not common in other Early Cretaceous bythocytherid species – a postero-dorsal tubercle over the lateral u-shaped inflation and the presence of reticulate ornamentation at the central area that slightly fades along adjacent areas – but observable in the present specimens. Compared to P. amsittenensis comb. nov., P. trinodosa comb. nov. is more slender in lateral view and presents more developed antero-dorsal and postero-dorsal tubercles.
Paleoecology and distribution
Praebythoceratina trinodosa comb. nov. is a marine, shelf species occurring in the following localities and stages: United States, upper Albian ( Alexander 1934); and in the present work, Angico and Taquari Members, Riachuelo Formation, Sergipe-Alagoas Basin, Brazil, uppermost Aptian–lower Albian, Aracajuia benderi zone (MSA-0), Sergipella viviersae subzone (MSA-0.2).
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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Praebythoceratina trinodosa ( Alexander, 1934 )
Antonietto, Lucas Silveira, Carmo, Dermeval Aparecido do, Viviers, Marta Claudia, Neto, João Villar Queiroz & Hunt, Gene 2016 |
Monoceratina trinodosa
Alexander 1934: 64 |