Ceratobairdia pratti Forel, 2021
publication ID |
https://doi.org/ 10.5852/ejt.2021.770.1499 |
publication LSID |
lsid:zoobank.org:pub:33F92DB8-3122-4F8E-995B-DBF260B3E390 |
DOI |
https://doi.org/10.5281/zenodo.5536093 |
persistent identifier |
https://treatment.plazi.org/id/97132C11-D593-4D25-AFA4-05B453873EA4 |
taxon LSID |
lsid:zoobank.org:act:97132C11-D593-4D25-AFA4-05B453873EA4 |
treatment provided by |
Felipe |
scientific name |
Ceratobairdia pratti Forel |
status |
sp. nov. |
Ceratobairdia pratti Forel sp. nov.
urn:lsid:zoobank.org:act:97132C11-D593-4D25-AFA4-05B453873EA4
Figs 5G View Fig , 11C–G View Fig
Diagnosis
A species of Ceratobairdia with a nodular dorsal blade at LV displaying 6 very small triangular nodules?, AB and PB prolonged by short horizontal spines, posterior end reduced.
Etymology
Named after the geologist Wallace Pratt who donated a part of the McKittrick Canyon which became part of the Guadalupe Mountains National Park, Guadalupe Mountains, West Texas, USA.
Material examined
Holotype USA • complete carapace ( Fig. 11C View Fig ); Guadalupe Mountains , West Texas, Williams Ranch Member , Cutoff Formation , Quarry section, sample GM1; Roadian, Middle Permian; MNHN.F. F63456 View Materials .
Paratype USA • 1 left valve, ( Fig. 11D View Fig ); Guadalupe Mountains , West Texas, Williams Ranch Member , Cutoff Formation , Quarry section, sample GM1; Roadian, Middle Permian; MNHN.F. F63457 View Materials .
Additional material
USA • 1 left valve; Guadalupe Mountains , West Texas, Williams Ranch Member , Cutoff Formation , Quarry section, sample GM1; Roadian, Middle Permian; MNHN.F. F63458 View Materials • 1 left valve; same locality as for preceding; Roadian, Middle Permian; MNHN.F. F63459 View Materials • 1 left valve; same locality as for preceding; Roadian, Middle Permian; MNHN.F. F63460 View Materials • 43 left valves; Guadalupe Mountains , West Texas, Williams Ranch Member , Cutoff Formation , Quarry section, samples GM1, GM2; Roadian, Middle Permian; MNHN.F. F63499 View Materials .
Dimensions
L= 981–1317 µm; H =607–846 µm ( Fig. 5G View Fig , only complete left valves measured, not considering spines).
Description
Sub-rectangular in lateral outline with Hmax around mid-L and Lmax around mid-H; dorsal margin uniformly convex with ADB straight and short; strong overlap of LV on RV along entire dorsal margin, much narrower along venter; PB steep, short and concave; dorsal margin transformed into nodular blade with 6 small triangular nodules; AB large with maximum of curvature around upper ⅓ rd and AVB plump, very convex; ventral margin straightly to slightly concave around mid-L; PB reduced, relatively large with maximum of curvature around mid-H; AB and PB slightly compressed laterally, prolonged by thick, short horizontal spines; surface smooth.
Occurrence
Samples GM1, GM2, Quarry section, Williams Ranch Member, Cutoff Formation, Guadalupe Mountains, West Texas, USA, Roadian, Middle Permian (this work).
Remarks
Ceratobairdia pratti sp. nov. is unique among species of Ceratobairdia known to date by the disposition of nodules along a nodular blade at LV and by the spines terminating AB and PB.
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.
Kingdom |
|
Phylum |
|
Class |
|
Order |
|
Family |
|
Genus |