Holothurian Sclerites from the Upper Part of Ajlun Group (Late Cretaceous) of Salhoub Area, North Jordan

Mahmoud H. Al-Tamimi, Walid A. Saqqa

Abstract


In this study, 16 species belonging to 7 genera of holothurian sclerites are studied from the Late Cretaceous (Late Cenomanian-Turonian) Shuayb and Wadi As-Sir Formations of Salhoub area, North Jordan. Holothurian sclerites include one new genus and 13 new species. Two species are included in the genus Calclamna (Frizzell and Exline, 1955), 3 new species of the genus Calclamnella (Frizzell and Exline, 1955), one new species of the genus Eocaudina (Martin, 1952), 4 new species of the new genus Hexapriscopedatus n.g., a new species of the genus Spinopriscopedatus (Kozur and Sadeddin, 1990), 4 new species of the genus Prisculatrites (Deflandre-Rigaud, 1962) and one species Tripuscucumis multiforaminis of Late Cenomanian (Al-Tamimi et al., 2001). Holothurian sclerites are divided into three assemblages based on their stratigraphic position in the studied section. This study and earlier ones (Sadeddin and Saqqa, 1997; Al-Tamimi et al., 2001; Sadeddin and Al-Tamimi, 2006) show the frequent-diverse and good preservation record of holothurian sclerites in the Late Cretaceous of Ajlun Group. This is a good inference to the stratigraphic significance of holothurians in the Late Cretaceous times in Jordan.


Keywords


Holothurian sclerites, Late Cretaceous, N. Jordan, Shuayb Fm., Wadi As-Sir Fm., Ajlun Group, Late Cenomanian-Turonian.

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