SpletLife: Animalia: Mollusca: Cephalopoda: Ammonoidea: Haloritidae: Trachysagenites: Trachysagenites erinaceus: Taxonomy (PBDB) Life: Animalia: Mollusca: Cephalopoda: … SpletLeconteiceras, Sagenites (Trachysagenites); A-cestidae: Arcestes, restricted to the upper part of the section. Within the Tropites subbullatus zone, this assemblage seems to represent the subzone of T. dilleri. No new specific names are proposed but ample use is made of open nomen-clature. The material described is profusely il-lustrated.

Gnath

Splet2 Geological setting and studied samples Monte Gambanera is a modest relief located in central eastern Sicily (F 269 III NE of the Carta d’Italia alla scala SpletGlobal Biodiversity Information Facility. Free and Open Access to Biodiversity Data. shell oil speakers corner

Trachysagenites shastensis Smith, 1927

Trachyte is an extrusive igneous rock composed mostly of alkali feldspar. It is usually light-colored and aphanitic (fine-grained), with minor amounts of mafic minerals, and is formed by the rapid cooling of lava enriched with silica and alkali metals. It is the volcanic equivalent of syenite. Trachyte is common wherever alkali magma is erupted, including in late stages of ocean island volcanism and in continental rift valleys, above mantle plumes, and in areas of back-arc extension… SpletTrachysagenites: subgenus: belongs to Sagenites: stated with evidence: Hyatt and Smith, 1905: Trachysagenites: genus: belongs to Sagenitinae: stated with evidence: Spath, 1951: Trachysagenites: genus: belongs to Trachyceratidae: stated with evidence: Tozer, 1981: … SpletThe Haloritidae is an ammonoid family belonging to the Ceratitida and placed in the Tropitaceae, a superfamily. The Haloritidae are characteristically subglobose and involute, commonly with lateral ribs that may cross the venter. In some the ribs may have nodes. Ventral keels and furrows are atypical. The last volution (whorl) is commonly eccentric. … shell oil selection