New record of the stalked crinoid Saracrinus angulatus (Echinodermata: Crinoidea: Isocrinida) from Andaman Sea, Northern Indian Ocean

Khader, Chippy; Saravanane, N.; Kumar, B. Kishore; Sanjeevan, V. N.

doi:10.1007/s12526-016-0626-7

Cited by 1 publication

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“…Their ancestors should be present in the Cenozoic fauna of the Paratethys because they have been reported from the Neogene of Japan (Oji 1990) and Caribbean islands (Donovan et al 2005). The Metacrininae are today restricted to the western Pacific margins and northeastern Indian Ocean (Chippy et al 2018). Their oldest known representatives are found in the Paleocene and Eocene of the Antarctic Peninsula (Rasmussen 1980;Meyer and Oji 1993;Baumiller and Gazdzick 1996).…”

Section: General Geological and Biogeographical Settingmentioning

confidence: 99%

Early Miocene stalked crinoids (Echinodermata) from the southern Rhodanian basin (southeastern France). Paleoenvironments and taxonomy

Roux

Philippe²

2021

Zootaxa

420

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Using recent samplings and specimens from ancient collections, 14 sites and five species of stalked crinoids have been listed in the Miocene of the southern Rhodanian basin (southeastern France). Three species and two genera are new for science: Papacrinus avignonensis n. gen., n sp. (Balanocrininae), Paraconocrinus rhodanicus n. sp. (Rhizocrinidae) and Gastecrinus vinealis n. gen., n. sp. (Incertae sedis). The identification among the Mediterranean Miocene fauna of the genus Metacrinus, now confined to the Indo-Pacific province, was confirmed by the discovery of brachial ossicles attributed to Metacrinus berthei. The richest and most diversified site was exposed during temporal excavations at the Place du Palais des Papes in Avignon. Four out of the five stalked crinoid species were found in this fossil assemblage in which M. berthei predominates. ?Endoxocrinus gastaldii is associated with M. berthei in several sites. Using dissociated ossicles, differences in quantitative and qualitative characters between these two species are deeply analyzed with their taphonomical, taxonomical and paleoecological consequences. Paleoreliefs and valleys, which had been incised during the Burdigalian, channeled currents. They favored stalked crinoid settlement on various substrates during the late Burdigalian—Lower Langhian transgression. Comparison with the extant fauna allows us to estimate the depth range of the biotopes with stalked crinoids from 100 to 250 m. These estimates are in agreement with those deduced from other paleontological studies.

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Section: General Geological and Biogeographical Settingmentioning

confidence: 99%