Late Cretaceous crinoids (Echinodermata) from the southwestern margin of the Holy Cross Mts. (southern Poland) and phylogenetic relationships among bourgueticrinids.

Rafał Lach,Mariusz A Salamon

doi:10.1007/s12542-016-0313-9

Abstract

A systematic account of crinoids from the Upper Coniacian–Lower Campanian of the southwestern margin of the Holy Cross Mountains in southern Poland is presented. Seven crinoid taxa [Marsupites testudinarius (von Schlotheim), Bourgueticrinus ellipticus (Miller), Bourgueticrinus sp., I.? granosus Valette, Isocrinus? sp., Nielsenicrinus carinatus Roemer and Austinocrinus bicoronatus (von Hagenow)] are described and illustrated. The new material from Poland extends down the stratigraphic range of Austinocrinus bicoronatus to the Lower Campanian. Morphometric data support that Bourgueticrinus ellipicus and B.? suedicus are conspecific. Taphonomy and paleoecology of recorded crinoid assemblages are discussed. Phylogeny of Cretaceous bourgueticrinids is also revisited.Electronic supplementary materialThe online version of this article (doi:10.1007/s12542-016-0313-9) contains supplementary material, which is available to authorized users.

Highlights

Major progress has been achieved through taxonomic studies on the Late Cretaceous crinoids from Poland (Salamon 2009; Salamon and Gorzelak 2010)
Lach (2016) completed and summarized our knowledge on this echinoderm class from this country. He stressed that the Late Cretaceous crinoids are best known from the Vistula River Valley, Miechow Trough, Podlasie area, Upper Nysa Trough and Pomerania area
According to Remin (2004) and Lach (2016), the following crinoid taxa occur in the Upper Cretaceous sediments in the southwestern margin of the Holy Cross Mountains: Isocrinus? sp., Bourgueticrinus sp. (Coniacian); Bourgueticrinus sp., Comatulida indet., Marsupites testudinarius (Santonian); Isocrinida indet. (Campanian)

Summary

Introduction

Major progress has been achieved through taxonomic studies on the Late Cretaceous crinoids from Poland (Salamon 2009; Salamon and Gorzelak 2010). According to Remin (2004) and Lach (2016), the following crinoid taxa occur in the Upper Cretaceous sediments in the southwestern margin of the Holy Cross Mountains: Isocrinus? B Fig. 3 Santonian crinoid Marsupites testudinarius (von Schlotheim) from the southwestern margin of the Holy Cross Mountains and GPIH.

Results

Conclusion