Mariella resembles Turrilites in general form. The shell is asymmetric, closely wound in a long expanding trochoidal spire. Ribs are slightly oblique and are rather feeble, each with 4 more or less equally spaced tubercles. Turrilites differs primarily in being more strongly ribbed and in having a more oval aperture.
Distributionedit
Fossils of Mariella have been found in Angola, Antarctica, Australia, Brazil, Canada (British Columbia), Colombia (Hiló Formation), France, Germany, Iran, Japan, Kazakhstan, Madagascar, Mexico, Mozambique, New Zealand, South Africa, Spain, Switzerland, Turkmenistan, Ukraine, the United Kingdom, and the United States (California, Texas, Oregon).[1]
Arkell, W.J.; Kummel, B.; Wright, C.W. (1957). Mesozoic Ammonoidea. Treatise on Invertebrate Paleontology, Part L, Mollusca 4. Lawrence, Kansas: Geological Society of America and University of Kansas Press.
April 15, 2024
mariella, other, uses, disambiguation, ammonoid, genus, named, nowak, 1916, from, upper, albian, cenomanian, stages, cretaceous, included, turrilitidae, type, turrilites, bergeritemporal, range, albian, cenomanian, preꞒ, lewesiensis, fossilscientific, classifi. For other uses see Mariella disambiguation Mariella is an ammonoid genus named by Nowak 1916 from the upper Albian and Cenomanian stages of the mid Cretaceous included in the Turrilitidae Its type is Turrilites bergeriMariellaTemporal range Albian Cenomanian PreꞒ Ꞓ O S D C P T J K Pg NMariella lewesiensis fossilScientific classificationDomain EukaryotaKingdom AnimaliaPhylum MolluscaClass CephalopodaSubclass AmmonoideaOrder AmmonitidaSuborder AncyloceratinaFamily TurrilitidaeGenus MariellaNowak 1916 Contents 1 Description 2 Distribution 3 References 4 Further readingDescription editMariella resembles Turrilites in general form The shell is asymmetric closely wound in a long expanding trochoidal spire Ribs are slightly oblique and are rather feeble each with 4 more or less equally spaced tubercles Turrilites differs primarily in being more strongly ribbed and in having a more oval aperture Distribution editFossils of Mariella have been found in Angola Antarctica Australia Brazil Canada British Columbia Colombia Hilo Formation France Germany Iran Japan Kazakhstan Madagascar Mexico Mozambique New Zealand South Africa Spain Switzerland Turkmenistan Ukraine the United Kingdom and the United States California Texas Oregon 1 References edit Mariella at Fossilworks orgFurther reading editArkell W J Kummel B Wright C W 1957 Mesozoic Ammonoidea Treatise on Invertebrate Paleontology Part L Mollusca 4 Lawrence Kansas Geological Society of America and University of Kansas Press Retrieved from https en wikipedia org w index php title Mariella amp oldid 1060830470, wikipedia, wiki, book, books, library,
