Enoploclytia collignoni Secrétan, 1964

Charbonnier, Sylvain, Garassino, Alessandro & Pasini, Giovanni, 2012, Revision of Mesozoic decapod crustaceans from Madagascar, Geodiversitas 34 (2), pp. 313-357 : 313-357

publication ID	https://doi.org/ 10.5252/g2012n2a5
persistent identifier	https://treatment.plazi.org/id/143B927A-FF87-FFED-FF02-FB5806B4109C
treatment provided by	Marcus
scientific name	Enoploclytia collignoni Secrétan, 1964
status

Treatment

Enoploclytia collignoni Secrétan, 1964 ( Figs 7 View FIG ; 8 View FIG )

Enopoclytia [sic] collignoni Secrétan, 1964: 82-90 , pl. 3, figs 10, 11; pl. 4, figs 4, 5; pl. 5, figs 1-8.

Enopoclytia [sic] sp. Secrétan, 1964: 93, 94, pl. 7, figs 3, 4; pl. 8, fig. 5.

Enoploclytia collignoni – Förster 1966: 151. — Schweitzer et al. 2010: 22.

HOLOTYPE. — MNHN.F. R 03925, gisement 256.

PARATYPES. — From the “Coupe de Bevaho” (Lower Campanian): 14 specimens ( MNHN.F. A33098 View Materials , A33115 View Materials , A33119, A33124 View Materials , A33130 View Materials , A33132 View Materials , A33133 View Materials , A33163, A33165, A33169, A33177, R 03923, R 03924, gisement 261, Karapadites karapadensis zone); 2 specimens ( MNHN.F.A33116, A33195, gisement 260, Karapadites karapadensis zone); 1 specimen ( MNHN.F.A33203, gisement 255, Anapachydiscus wittekindi and Eulophoceras jacobi zone); 1 specimen ( MNHN.F.A33200, gisement 251); 2 specimens ( MNHN.F.A33194, gisement 254). From the “Coupe de Berere I” (Lower Campanian): 1 specimen ( MNHN.F.A33170, gisement 161, Anapachydiscus wittekindi and Eulophoceras jacobi zone); 3 specimens ( MNHN.F. A33074 View Materials , A33155, A33337, gisement 163); 7 specimens ( MNHN.F.A33046, A33077 View Materials , A33083 View Materials , A33149, gisement 165); 1 specimen ( MNHN.F.A33198, gisement 166); 2 specimens ( MNHN.F.A31655, A33053 View Materials , gisement 167); 10 specimens ( MNHN.F.A31656, A33081 View Materials , A33118 View Materials , A33131 View Materials , A33153, A33173, A33174, A33191, A33471 View Materials gisement 171, Karapadites karapadensis zone).

From the “Coupe de Berere III” (Lower Campanian): 1 specimen ( MNHN.F. R 03914, gisement 192, Anapachydiscus wittekindi and Eulophoceras jacobi zone); 4 specimens ( MNHN.F.A33062, A33112 View Materials , A33161, A33183, gisement 190, Anapachydiscus wittekindi and Eulophoceras jacobi zone).

All specimens are from Belo-sur-Tsiribihina, Menabe region, central Morondava Basin, Tulear Province.

TYPE LOCALITY. — Coupe de Bevaho (gisement 256), Belo-sur-Tsiribihina, Menabe region, central Morondava Basin, Tulear Province.

TYPE AGE. — Early Campanian ( Anapachydiscus wittekindi and Eulophoceras jacobi zone).

ADDITIONAL MATERIAL EXAMINED. — From the “Coupe d’Ampolypoly-Antsirasira-Behamotra” (Middle-Upper Santonian): 1 figured specimen ( MNHN.F. R 03919, gisement 280, Texanites hourcqi and Pseudoschloenbachia umbulazi zone).

From the “Coupe de Bevaho” ( Lower Campanian ): 3 specimens ( MNHN.F.A33164, A33178, A33193, gisement 260, Karpadites karapadensis zone) ; 3 specimens ( MNHN.F.A33362, gisement 261, Karpadites karapadensis zone) .

From the “Coupe de Berere I” (Lower Campanian): 2 specimens ( MNHN.F. A33079 View Materials , A33469 View Materials , gisement 165); 1 specimen ( MNHN.F.A33187, gisement 162, Anapachydiscus wittekindi and Eulophoceras jacobi zone). From the “Coupe de Berere III” (Lower Campanian): 1 specimen ( MNHN.F.A33332, gisement 190, Karpadites karapadensis zone); 1 specimen ( MNHN.F.A33137, gisement 192, Anapachydiscus wittekindi and Eulophoceras jacobi zone).

From unnamed outcrops: 2 specimens ( MNHN.F. A33041 View Materials , A33186, gisement 708).

From unknown outcrops: 6 specimens ( MNHN.F.A33058, A33167, A33229). All specimens are from Belo-sur- Tsiribihina, Menabe region, central Morondava Basin, Tulear Province.

STRATIGRAPHIC RANGE. — Middle Santonian to Early Campanian.

DIAGNOSIS. — Cephalothorax with deep cervical groove; antennal groove elongate, weak; postcervical and branchiocardiac grooves parallel and well marked; branchiocardiac groove interrupted at ⅓ of the carapace height; postcervical groove medially sinuous, joined to hepatic groove; inferior groove well marked; gastric region with one strong ventral spine; pterygostomial region prominent; antennal region with antennal carina bearing 3-4 strong, aligned spines, the last one stronger, directed forwards

(antennal spine); tuberculate fusiform area on the dorsal margin, flanked by two strong, basal rostral spines.

DESCRIPTION

Cephalothorax subrectangular (CL = 90 mm, CH = 32 mm); rostrum not preserved; tuberculate fusiform area on the dorsal margin, flanked by two strong, basal rostral spines; gastric and antennal region well defined between cervical and antennal grooves; antennal region slightly inflated with antennal carina bearing 3-4 strong, aligned spines,the last one strongest, directed forwards (antennal spine); wide cardiac region with one strong ventral spine; wide, rounded branchial region;cervical groove deep, slightly inclined and sinuous at mid-height,intercepting dorsal margin at an angle of c. 55°; postcervical and branchiocardiac grooves strongly inclined intercepting dorsal margin at an angle of c. 40°; branchiocardiac groove interrupted at ⅓ of the carapace height;postcervical groove medially sinuous joining the hepatic groove; well-marked hepatic and inferior grooves;prominent pterygostomial region; posterior margin with well-marked carina; differentiated ornament on cephalothoracic regions: branchial region uniformly covered by small pits, cardiac, pterygostomial, gastric and antennal covered by small pits and strong spiny tubercles.

Cephalic appendages and abdomen not preserved.

Only P1 and P2 are preserved of the thoracic appendages; P1 homochelous: chelae with globose propodus bearing very narrow, elongate dactylus and index incurved distally; propodus covered with uniform pits with sparse aligned strong tubercles on the inner surface and with uniform pits and small tubercles on the outer one; occlusal opening narrow; occlusal margins of dactylus and index straight, with one row of strong teeth; ventral margin of the merus bearing strong spines; P2 small chelae.

DISCUSSION

We concur with Förster’s (1966) diagnosis of Enoploclytia . Based on our revision of the Malagasy material referred to Enoploclytia by Secrétan (1964), we subscribe to this generic attribution, but wish to note that the line drawings in Secrétan (1964: figs 43, 44) are incorrect in showing the postcervical groove to be joined by the hepatic one and not interrupted at ⅓ of carapace height.