Laqueoserpula reussi ( WEINZETTL , 1910)

Kočí, Tomáš & Jäger, Manfred, 2015, Sabellid And Serpulid Worms (Polychaeta, Canalipalpata, Sabellida, Sabellidae, Serpulidae) From The Rocky Coast Facies (Late Cenomanian) At Předboj Near Prague, Acta Musei Nationalis Pragae Series B 71 (1 - 2), pp. 31-50 : 35-36

Laqueoserpula reussi ( WEINZETTL, 1910)

Pl. 1, Fig. 7

non 1831 Serpula depressa nobis – Goldfuss, p. 236–237, pl. 70, fig. 6.

1875 Serpula depressa GOLDFUSS – Geinitz, p. 286, pl. 63, fig. 22.

1910 Burtinella (?) Reussi m. – Weinzettl, p. 23–24, pl. 3, fig. 46, 47, and 51. (NM-O3537, O3538, and O3539)

1979 Laqueoserpula cf. plana n. sp. – Lommerzheim, p. 150.

1984 Spiraserpula spirographis (GOLDFUSS, 1831) and Mucroserpula arcuata (MÜNSTER, 1831) – Ziegler, p. 225, pl. 3, fig. 7. (NM-O5377)

1984 Mucroserpula arcuata (MÜNSTER, 1831) – Ziegler, p. 228–229, pl. 4, fig. 3–4. (NM-O5379, O5380)

1984 Mucroserpula mucroserpula REGENHARDT, 1961 – Ziegler, p. 229, pl. 4, fig. 5. (NM-O5381)

1984 Eoplacostegus sulcatus ( SOWERBY, 1829) – Ziegler, p. 235–236, pl. 5, fig. 8. (NM-O5167, not O5389, as erroneously stated by Ziegler (1984, p. 253))

1984 Hepteris septemsulcata (ROEMER, 1841) – Ziegler, p. 240–241, pl. 7, fig. 3–4. (NM-O5397)

1984 Hamulus sexsulcatus (MÜNSTER, 1831) – Ziegler, p. 240, pl. 7, fig. 5. (NM-O5398)

2006 Serpula cf. rauca ZIEGLER – Žítt et al., p. 66, fig. 12M.

2012b Laqueoserpula sp. – Kočí, p. 122, fig. 1G.

2014 Laqueoserpula reussi ( WEINZETTL, 1910) – Jäger, p. 67, fig. 2d1–3.

non 1910 Burtinella (?) Reussi m. – Weinzettl, p. 23–24, pl. 3, fig. 48, 49, and 50.

M a t e r i a l: Three complete specimens, one damaged coil and four fragments.

S u b s t r a t e: In the figured specimen, a small tube is attached to a larger tube of the same species.

D e s c r i p t i o n. The attached posterior tube portion forms a coil, whereas the free anterior tube portion is elevated and slightly spindle-shaped. In a well preserved specimen which has a spine over the aperture, the attached coil measures 6.4 mm in diameter, and the free anterior portion reaches a tube diameter of 3.9 mm. Longitudinal ornamentation consists of distinct lines on the upper side resembling tiny grooves. Transverse ornamentation consists of strong annular peristomes and distinct V-shaped wrinkles forming a spine over the aperture in one specimen, whereas in two other specimens such a spine is not present. Quadrangular cross-section.

R e m a r k s a n d r e l a t i o n s h i p s. It may be speculated if the one specimen with a spine over the aperture and the two specimens lacking such a spine may belong to two different species, L. reussi and L. plana LOMMERZHEIM, 1979 , respectively. However, the more likely explanation is that the spines may have simply broken off. This alternative explanation is supported by the fact that in a detailed revision and description of this species from other rocky coast facies localities of the BCB which will be published by Jäger et al. (in prep.), all well preserved apertures usually bear spines. The angular tube morphology bearing spines at the aperture somewhat resembles that of the genus Placostegus PHILIPPI, 1844 , however, typical representatives of Placostegus are smaller and have a translucent tube.