Английская Википедия:Fleming Fjord Formation

Материал из Онлайн справочника
Перейти к навигацииПерейти к поиску

Шаблон:Infobox rockunit The Fleming Fjord Formation, alternatively called the Fleming Fjord Group is an Upper Triassic geological formation in the northeastern coast of Jameson Land, Greenland. It consists of terrestrial sediments and is known for its fossil content.

Description

It is of Norian to Rhaetian age and is subdivided into three members; at the base the Edderfugledal Member, followed by the Malmros Klint Member with the Ørsted Dal Member at the top. It was deposited in a large shallow to ephemeral lake.[1]

Paleobiota

The fauna of Fleming Fjord is diverse, including sauropodomorph dinosaurs, pterosaurs, temnospondyls, mammaliaforms, aetosaurs, and other taxa.[2] Freshwater unionid bivalves and conchostracans have been reported from the Malmros Klint Member.[3]

Fish

Lungfish, actinopterygian, and chondrichthyan teeth have been reported from the Malmros Klint Member.[3]

Fish of the Fleming Fjord Formation
Genus / Taxon Species Member Notes
Ceratodus C. tunuensis[4] Ørsted Dal Member A lungfish, possibly synonymous with Ptychoceratodus rectangulus[5]
Ptychoceratodus P. rectangulus[5] Ørsted Dal Member A lungfish

Amphibians

Amphibians of the Fleming Fjord Formation
Genus / Taxon Species Member Notes Images
Cyclotosaurus C. naraserluki[6] Ørsted Dal Member A capitosaurian temnospondyl
Файл:CyclotosaurusDB2 White background.jpg
Cyclotosaurus
Gerrothorax G. cf. pulcherrimus[7] Malmros Klint Member,[3]

Ørsted Dal Member

A plagiosaurid temnospondyl
Salientia indet.[8] Ørsted Dal Member A potential stem-group anuran (frog)

Reptiles

Besides the forms described below, a diverse ichnofauna of small and large tracks has also been reported from the Malmros Klint Member,[3] as well as coprolites[9][10] and additional theropod, pterosaur, and turtle fossils.[3][11]Шаблон:Paleobiota-key-compact

Reptiles of the Fleming Fjord Formation
Genus / Taxon Species Member Notes Images
Aetosaurus A. ferratus Ørsted Dal Member A small aetosaur[11]
Файл:Footprints of Large, Triassic dinos in Greenland.png
Eosauropus
Файл:Issiskull.png
Issi saaneq
Файл:Paratypothorax andressorum.JPG
Paratypothorax andressorum
Файл:Proganochelys Quenstedti.jpg
Proganochelys
Arcticodactylus A. cromptonellus Ørsted Dal Member A eudimorphodontid pterosaur[11]
cf. Brachychirotherium Ørsted Dal Member Small quadrupedal tracks, likely produced by small or juvenile pseudosuchians[12]
Eosauropus sp. Ørsted Dal Member Large (>40 cm per footprint) quadrupedal tracks, likely produced by an early sauropod related to Eusauropoda[13]
Evazoum sp. Ørsted Dal Member Large (~36 cm per footprint) bipedal tracks, likely produced by a plateosaurian sauropodomorph. By far the largest prints assigned to this ichnogenus[13]
Grallator sp. Malmros Klint Member, Ørsted Dal Member Small bipedal tracks, likely produced by theropods[13][11]
Issi[14] I. saaneq Malmros Klint Member A plateosaurid sauropodomorph closely related to (and previously referred to) Plateosaurus
Paratypothorax P. andressorum Ørsted Dal Member? A moderate-sized paratypothoracin aetosaur[11]
Phytosauria indet. Malmros Klint Member Indeterminate phytosaur fossils, including adult and juvenile specimens[11]
Plateosauridae indet. Malmros Klint Member, Ørsted Dal Member Undescribed fossils of plateosaurid sauropodomorphs, including complete skeletons. Plateosaurid skull material has been named as the species Issi saaneq[14]
cf. Proganochelys Ørsted Dal Member Turtle fossils possibly referrable to Proganochelys[11][15]
Testudinata indet. Malmros Klint Member?, Ørsted Dal Member Indeterminate testudinatan (turtle) fossils[11]

Synapsids

Synapsids of the Fleming Fjord Formation
Genus / Taxon Species Member Notes Images
cf. Brachyzostrodon Ørsted Dal Member A morganucodont mammaliaform[11]
Файл:Haramiyavia clemmenseni life restoration.jpg
Haramiyavia clemmenseni
Haramiyavia H. clemmenseni Ørsted Dal Member A haramiyid mammaliaform[11]
Kalaallitkigun[16] K. jenkinsi Ørsted Dal Member A haramiyid mammaliaform
Kuehneotherium sp. Ørsted Dal Member A kuehneotheriid mammaliaform[11]
Mitredon M. cromptoni Ørsted Dal Member A probainognathian cynodont with uncertain affinities[11]

See also

References

Шаблон:Reflist

Bibliography