Foraminifera-walled Schaubcylindrichnus coronus Frey and Howard, 1981, from the Middle Eocene, Kachchh, Western India. Issue 2 (3rd April 2019)

• Record Type: Journal Article
• Authors: Gurav, Shweta S.; Kulkarni, Kantimati G.
• Is Part Of: Ichnos. Volume 26:Issue 2(2019)
• Page Start: 134
• Page End: 140
• Publication Date: 2019-04-03
• Subjects: Schaubcylindrichnus coronus; Assilina granulosa -- Ypresian -- Naredi Formation -- Kachchh; Ichnology -- Periodicals; Trace fossils -- Periodicals; 560.5
• DOI: 10.1080/10420940.2018.1532897
• Languages: English
• ISSNs: 1042-0940

Abstract

Abstract: Bioclast lined tubes of Schaubcylindrichnus coronus are not much reported around the world. As of now only two reports are available. Interestingly in both these reports and in the current find, tests of foraminifers are used as tube building material. Current report of Schaubcylindrichnus is from the subtidal deposits of the Naredi Formation (Ypresian) of Kachchh Basin, Western India. As the host rock here abounds in the tests of larger benthic foraminifera, concentration of same is noticed within the tubes. The natural selection of lighter and larger calcitic grains of tests over the heavier mineral grains is the main reason for presence of the tests in tube building; moreover, presence of inner smooth wall of tube also indicates organisms' preference for comfort within their burrow.