Danielita gailloti n.gen., n. sp., within the evolutionary framework of middle–late permian dagmaritins

Danielita ismi kavkısı delikli ve loca kenarlarında dikensi uzantıları olan biserial bir dagmaritin cinsi için önerilmektedir. Danielita türemiş olduğu Dagmarita’dan delikli kavkısı ile farklılaşır ve dagmaritin stoğunun beklenmeyen evrimsel gelişimlerinden birini temsil eder. İlk dagmaritinler Kapitaniyen’de Sengoerina’ın ilk ortaya çıkışı ile Globivalvulina cyprica’dan türemişlerdir. Sık sık rastlanan G.cyprica-Sengoerina-Dagmarita-Danielita topluluğu dagmaritin cinslerin Kapitaniyen’de ortaya çıkışlarının çok hızlı ve kısa zaman aralıklarında gerçekleştiğini göstermektedir. Paradagmaritinae altfamilyası Dagmaritinae altfamilyasının altında sinonimize edilmiştir. Son zamanlarda tanımlanan cinslerden sadece Paradagmacrusta Dagmaritinae olarak değerlendirilmektedir. Labiodagmarita, Bidagmarita ve Siphodagmarita Paleotextulariidae ile ilişkili başka bir cins üstü takson içinde gruplanmalıdır. Değişik kavkı ve loca yapısına sahip Paradagmaritella ve Paremiratella Dagmaritinae altfamilyasının dışında tutulması lazımdır. G. cyprica’dan Lopingiyen’de iteratif bir evrim ürünü olarak ortaya çıkan Paradagmaritopsis’in evrimi Kapitaniyen’deki Sengoerina’nın evrimine benzerdir. Bununla beraber, Paradagmaritopsis’in loca yapısı bu cinsin Globivalvulininae altfamilyası içine dahil edilmesini gerektiğini göstermektedir.

Orta–geç permiyen dagmaritinlerin evrimsel çatısı içinde danielita gailloti yeni cins ve yeni tür

The name Danielita is proposed for a new dagmaritin genus characterized by a biserial arrangement of chambers with spine-like extensions at chamber corners and a perforated wall. Danielita differs from Dagmarita, from which it was derived, by a perforated wall and constitutes one of the peculiar evolutionary trends of the dagmaritin stock. Early dagmaritins evolved from Globivalvulina cyprica by the appearance of Sengoerina in the Capitanian and the frequently encountered association G. cyprica-Sengoerina-Dagmarita-Danielita in Turkey suggests that the evolutionary derivations of dagmaritin genera occurred very rapidly in the Capitanian. The subfamily Paradagmaritinae is synonymized under the subfamily Dagmaritinae. Among recently introduced genera, only Paradagmacrusta is included in the Dagmaritinae. Labiodagmarita, Bidagmarita and Siphodagmarita should be grouped in a new suprageneric taxon related to Paleotextulariidae. Characterized by different wall and chamber structures, Paradagmaritella and Paremiratella are also kept outside the subfamily Dagmaritinae. Paradagmaritopsis seems to be a product of iterative evolution in the Lopingian derived from Globivalvulina cyprica, similar to the evolution of Sengoerina in the Capitanian. However, its chamber structure suggests that it should be classified in the subfamily Globivalvulininae.

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