Remains of early Cretaceous ammonites and of a fish from Deep Sea Drilling Project Site 603.

Abstract

Shipboard examination of the interbedded laminated marls, bioturbated limestones, and sandstone to claystone turbidites of Lower Cretaceous lithologic Unit V at Site 603 revealed the presence of ammonites and aptychi. An entire ammonite was found on the upper surface of a whole-core interstitial water sample. The ammonite remains do not merit more than a short taxonomic note. A sample originally identified aboard ship as a section through a double-valved aptychus has subsequently been identified as belonging to a fish. This constitutes the second find of identifiable vertebrate remains in a Deep Sea Drilling Project hole, the first being the fish vertebrae from lege 41, Section 367-18-2. -from Author