Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: Rajiformes

Sortuj według:

Ogranicz wyniki do:

Mawsonascaris parva sp. nov. (Nematoda: Ascaridida) from the Arabian whipray Himantura randalli Last, Manjaji-Matsumoto et Moore (Rajiformes: Dasyatidae) off the coast of Iraq

100%

Ali A. H., Zhang L.-P., Al-Salim N. K., Li L.

Acta Parasitologica

2012

tom 57

nr 4

Mawsonascaris parva sp. nov. collected from the Arabian whipray Himantura randalli Last, Manjaji-Matsumoto et Moore (Rajiformes: Dasyatidae) off the coast of Iraq is described and illustrated using light and scanning electron microscopy. The new species differs from its congeners by its small body size (8.11–18.2 mm long), the absence of an intestinal caecum, the slightly unequal spicules (left and right spicule 1.08–2.50 mm and 0.98–2.01 mm long, respectively, representing 12.1–13.7% and 10.1–12.1% of body length), the number and arrangement of male caudal papillae (13–14 pairs in total, arranged as: 7–8 pairs of precloacal, 1 pair of double paracloacal and 5 pairs of postcloacal) and the presence of a single, median precloacal papilla. Thus, a total of six species of Mawsonascaris are now known and this is the first species of this genus recorded from species of Himantura.

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

New sharks and rays from the Cenomanian and Turonian of Charentes, France

88%

Vullo R., Cappetta H., Neraudeau D.

Acta Palaeontologica Polonica

2007

tom 52

nr 1

New or so far poorly known neoselachians from the Cenomanian and Turonian of SW France are described. The material studied herein comes from nine localities in the Charentes region, comprising palaeoenvironments ranging from coastal to open marine environments, and consists of two orectolobiforms, six lamniforms, and four rajiforms. The new taxa are Squalicorax coquandi sp. nov. and Roulletia bureaui gen. et sp. nov. within lamniforms, and Hamrabatis bernardezi sp. nov., Archingeayia sistaci gen. et sp. nov., and Engolismaia couillardi gen. et sp. nov. within rajiforms. New specimens of Odontaspis rochebrunei Sauvage, 1880 from the type area allow redescription of this taxon, assigned herein to the genus Cenocarcharias. Occurrences of Squalicorax baharijensis, S. cf. intermedius, and Archaeolamna sp., previously unrecorded from this region, and Almascyllium, a genus generally described from younger strata, are also noted, and improve knowledge of mid−Cretaceous selachian faunas from Western Europe.

Ograniczanie wyników

1 Acta Palaeontologica Polonica

1 Acta Parasitologica

1 Al-Salim N. K.

1 Ali A. H.

1 Cappetta H.

1 Li L.

1 Neraudeau D.

1 Vullo R.

1 Zhang L.-P.

1 2012

1 2007

Wyniki wyszukiwania

Mawsonascaris parva sp. nov. (Nematoda: Ascaridida) from the Arabian whipray Himantura randalli Last, Manjaji-Matsumoto et Moore (Rajiformes: Dasyatidae) off the coast of Iraq

New sharks and rays from the Cenomanian and Turonian of Charentes, France