Ceratobairdia pratti Forel, 2021

Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd & Crasquin, Sylvie, 2021, Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA, European Journal of Taxonomy 770, pp. 1-60 : 40-41

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.

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