Cretiscalpellum, WITHERS, 1922

Kočí, Tomáš, Veselská, Martina Kočová & Jagt, John W. M., 2014, Barnacles (Crustacea, Cirripedia, Thoracica) From The Bohemian Cretaceous Basin Described By Fritsch And Kafka (1887), With The Exclusion Of The Family Stramentidae, Acta Musei Nationalis Pragae Series B (Acta Mus. Nat. Prag.) 70 (3 - 4), pp. 223-234 : 225

Cretiscalpellum glabrum (ROEMER, 1841)

Pl. 2, fig. 2

*1841 Pollicipes glaber ROEMER, p. 104, pl. 16, fig. 11a-c.

1887 Scalpellum nitens KAFKA.: Fritsch and Kafka, p. 7, fig. 11a, b.

1887 Pollicipes glaber ROEMER: Fritsch and Kafka, p. 8, fig. 13.

1887 Pollicipes Bronnii ROEMER : Fritsch and Kafka, p. 9, fig. 14a-c.

1887 Pollicipes fallax DARWIN: Fritsch and Kafka, p. 10, fig. 17 (partim).

1887 Pollicipes cuspidatus KAFKA: Fritsch and Kafka, p. 11, fig. 18.

1887 Pollicipes unguis SOWERBY: Fritsch and Kafka, p. 12.

1889 Pollicipes glaber ROEMER: Fritsch, p. 95, fig. 117.

1887 Pollicipes bronni ROEMER: Fritsch, p. 95, fig. 118.

1893 Pollicipes glaber ROEMER: Fritsch, p. 109.

1897 Pollicipes glaber ROEMER: Fritsch, p. 70.

1935 Cretiscalpellum glabrum (F. A. ROEMER): Withers, p. 161, pl. 15, figs. 8–17; pl. 16, figs. 1–10; pl. 17, figs. 1–21; pl. 18, figs. 1–5.

M a t e r i a l. The original carina collected by Fritsch and Kafka (1887, fig. 13), from Koštice, NM O4375 (no. 6532) in the collections of the National Museum (Prague); it measures 14.6 mm in length and 6.3 mm in basal width. Pollicipes sp. / Scalpellum Frič A. ,- carina and two fragments of a left tergum from Měcholupy railway station - this material was collected by Antonín Frič in 1901, unpublished data., and deposited in collection of NM, without an inventary number.

D e s c r i p t i o n. Carina with broken apex, lacking parietes and intraparietes; median ridge distinct; lateral margins slightly rounded inwards; surface of carina apparently smooth, but at higher magnification distinct sharp lines parallel to basal margin become visible.

R e m a r k s. The present species bears the closest resemblance to C. striatum, the carina of which has a stronger apicobasal ridge than other longitudinal lines and strongly developed transverse lines. The carina of C. bronni (ROEMER, 1841), from the Cenomanian of Germany and northwest France, has no transverse lines and the apicobasal keel is less prominent, while that of C. unguis (J. DE C. SOWERBY, 1829), from the Albian of England and France, is wider, has slightly rounded parietes and the most strongly developed transverse lines within the genus Cretiscalpellum . The early Campanian C. obtusum JAGT ET COLLINS, 1999 has a trapezoidal scutum that is more convex than that of C. glabrum.

O c c u r r e n c e (B C B). Upper Cenomanian (Velim, Přemyšlany [Přemyšlení is now part of the hamlet of Zdiby near Prague), Černovičky; Lower Turonian (Velim, Kamajka, Turkaňk, Karlov, Odolena Voda, Běstvina u Ronova nad Doubravou , Chrtníky); Middle Turonian (Semice, Bousov, Všetaty, Mikulovice near Pardubice); Upper Turonian (Koštice, Úpohlavy, Čížkovice, Želenice near Bílina, Kostomlaty, Radim u Luže, Teplice, Kystrá, Měcholupy); Upper Turonian – Lower Coniacian (Lužice, Lány na Důlku near Pardubice, Úhřetická Lhota); Lower – Middle Coniacian (Litomyšl) .

O v e r a l l r a n g e. Upper Albian – Upper Maastrichtian.