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A new Miocene sirenian from Kutch, India

100%

Thewissen J. G. M., Bajpai S.

Acta Palaeontologica Polonica

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2009

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tom 54

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nr 1

7-13

We report a new Miocene sirenian from District Kutch, State of Gujarat, India: Domingia sodhae gen. et sp. nov. The new species is a dugongine dugongid with flattened tusk−like upper incisors. Like some other Miocene dugongids, Domningia is large and has complex, bilophodont molars and three−rooted premolars, which are strongly worn. The rostrum is downturned significantly, similar to modern dugongs, and indicative of a specialized feeding mode. Phylogenetically, it is closely related to Dioplotherium, Rytiodus, Corystosiren, and Bharatisiren. Among these, Domningia is most similar to Bharatisiren indica and Dioplotherium manigaulti, in that all three taxa retain multi−rooted premolars. Similar to Bharatisiren, the nasal process of the premaxilla is long. Bharatisiren and Domningia are part of a late Oligocene and early Miocene radiation of dugongines in South Asia.

2

Syreny z Indopacyfiku

80%

Jablonska A.

Wszechświat

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2009

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tom 110

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nr 04-06

59-62

3

Pochodzenie i ewolucja ssaków morskich Polski

80%

Wolsan M.

Przegląd Zoologiczny

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1991

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tom 35

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nr 3-4

4

Morphological and systematic re-assessment of the late Oligocene “Halitherium” bellunense reveals a new crown group genus of Sirenia

80%

Acta Palaeontologica Polonica

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2017

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tom 62

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nr 1

“Halitherium” bellunense is exclusively known from a single individual from upper Oligocene glauconitic sandstone near Belluno, northern Italy. According to a review of its morphological basis, which consists of associated cranial elements, some vertebrae and ribs, this specimen is identified as a juvenile, because the first upper incisor (I1) and supposedly second upper molar (M2) are not fully erupted. However its juvenile status allowed only cautious conclusions on its taxonomy and systematic affinity. The presence of a nasal process of the premaxilla with a broadened and bulbous posterior end, and a lens-shaped I1, corroborate an evolutionarily-derived status of this species that places it well within the sirenian crown group Dugonginae. Considering these new data and in order to avoid continued misuse of the inappropriate generic name of Halitherium, a new generic name, Italosiren gen. nov., and emended species diagnosis are supplied for this taxon.

5

Muzyka przyrody - oceany, morza i wody śródlądowe

70%

Mazurkiewicz-Zapalowicz K.

Ekonatura

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2013

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nr 12

6

Uwagi dotyczące wykazu chronionych ssaków w Wietnamie

61%

van Sung C.

Chrońmy Przyrodę Ojczystą

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1991

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tom 47

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nr 3

Ograniczanie wyników

2 Acta Palaeontologica Polonica

1 Chrońmy Przyrodę Ojczystą

1 Ekonatura

1 Przegląd Zoologiczny

1 Wszechświat

1 Bajpai S.

1 Jablonska A.

1 Mazurkiewicz-Zapalowicz K.

1 Thewissen J. G. M.

1 Wolsan M.

1 van Sung C.

1 2017

1 2013