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List of informally named Mesozoic reptiles
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List of informally named Mesozoic reptiles
This list of informally named Mesozoic reptiles is a listing of prehistoric reptiles from the Mesozoic era (excluding dinosaurs) that have never been given formally published scientific names. This list only includes names that were not properly published ("unavailable names") and have not since been published under a valid name. The following types of names are present on this list:
The "Addyman plesiosaur" is an informal name given to a leptocleidid plesiosaur specimen (SAM P15980) discovered by the opal miners John and Molly Addyman in 1967 from the Bulldog Shale near Andamooka, South Australia. Assigned to as cf. Leptocleidus sp. in 2007, probably a juvenile Umoonasaurus, this 80% complete skeleton measures 70 cm (28 in) long and represents one of the most immature and smallest known plesiosaur specimens. Housed in the South Australian Museum, the "Addyman plesiosaur" is also dubbed "the finest known opalised skeleton on Earth".
The "African pterosaur" is an informal name given to a pterosaur specimen from the Early Cretaceous of Niger, which was reported by Paul Sereno's team. The specimen is stated to be a partial wing, which is the first known in Africa, and its life-size reconstruction can be seen in the "GIANTS" exhibit in Chicago; although it is unstated which type of pterosaur this specimen belongs to, it is noted to be a piscivore (fish-eater) based on associated teeth material and similar to the pterosaurs known from Brazil of South America, with an estimated wingspan of 5 metres (16 ft). The specimen was later shown in the 2-hour National Geographic special program Sky Monsters (2006), which featured its discovery and life-size reconstruction attempt by Sereno's team. In his update entry of the 2000 Expedition of Niger, Sereno mentioned that his team found evidence of a large pterosaur specimen. In his 2000 interview, David Blackburn who participated in that expedition recounted the pterosaur partial wing discovery. He later discussed about the Elrhaz Formation pterosaur specimens in a 2002 conference abstract, stated to be the "only documented pterosaurian appendicular material from Africa", with the left humerus belonging to a tapejaroid and the partial wing belonging to an anhanguerid.
"Aktisaurus" (meaning coast or shoreline lizard) is a nomen ex dissertationae created by Hallie Pritchett Street in her PhD thesis as a new genus to contain the species originally named Mosasaurus conodon (specimen AMNH 1380), which has been of uncertain classification since its naming. The phylogenetic analysis of Street did not recover Mosasaurus as a monophyletic genus, and erected several new genera for species previously assigned to Mosasaurus. "Aktisaurus" was recovered as the sister taxon of Plotosaurus as demonstrated by the similar morphology of the carinae on their teeth.
"Amblyrhynchosaurus wiffeni" (meaning blunt-snouted lizard) is a genus and species of nomen ex dissertationae named by Hallie Pritchett Street in her PhD thesis centered on the taxonomy of Mosasaurus. The designated type specimen is NZGS CD 535, which is a mostly complete mosasaurine skull that was discovered in the Maungataniwha Sandstone on the North Island of New Zealand. "Amblyrhynchosaurus" has similar skull morphology to the genus Prognathodon, but it was recovered as the sister taxon of Moanasaurus and a close relative of Mosasaurus. The species epithet is in honor of Joan Wiffen, although the precise spelling is uncertain. It is spelled both as "wiffeni" and "wiffenae" in the text of the thesis.
"Antipodenectes" (meaning swimmer from the other side of the world) is a nomen ex dissertationae erected by Hallie Pritchett Street in her PhD thesis to contain the species Mosasaurus mokoroa, which was named by S.P. Welles and D.R. Gregg in 1971. In her phylogenetic analysis, Street did not recover M. mokora as being within a monophyletic Mosasaurus genus, so named a new genus to contain this taxon. It was recovered as a close relative of Plotosaurus as well as "Aktisaurus". The type specimen is CM Zfr-1, which was discovered in the Conway Formation from the South Island of New Zealand.
The "Aust Colossus" is an informal name given to the giant ichthyosaur specimens (BRSMG Cb3869, BRSMG Cb3870, BRSMG Cb4063 and BRSUG 7007) discovered from the Late Triassic (Rhaetian) Westbury Formation at the Aust Cliff. "Aust Colossus" has been tentatively estimated to be even larger than the 25 metres (82 ft) long ichthyosaur Ichthyotitan from the same formation, possibly over 30 metres (98 ft) long, though the authors acknowledge that this is a very speculative estimate.
"Batoremys" is a genus of putative macrobaenid turtle from the Early Cretaceous of Mongolia. The intended type species "Batoremys leptis" was never given formal description, so it remains a nomen nudum.
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List of informally named Mesozoic reptiles
This list of informally named Mesozoic reptiles is a listing of prehistoric reptiles from the Mesozoic era (excluding dinosaurs) that have never been given formally published scientific names. This list only includes names that were not properly published ("unavailable names") and have not since been published under a valid name. The following types of names are present on this list:
The "Addyman plesiosaur" is an informal name given to a leptocleidid plesiosaur specimen (SAM P15980) discovered by the opal miners John and Molly Addyman in 1967 from the Bulldog Shale near Andamooka, South Australia. Assigned to as cf. Leptocleidus sp. in 2007, probably a juvenile Umoonasaurus, this 80% complete skeleton measures 70 cm (28 in) long and represents one of the most immature and smallest known plesiosaur specimens. Housed in the South Australian Museum, the "Addyman plesiosaur" is also dubbed "the finest known opalised skeleton on Earth".
The "African pterosaur" is an informal name given to a pterosaur specimen from the Early Cretaceous of Niger, which was reported by Paul Sereno's team. The specimen is stated to be a partial wing, which is the first known in Africa, and its life-size reconstruction can be seen in the "GIANTS" exhibit in Chicago; although it is unstated which type of pterosaur this specimen belongs to, it is noted to be a piscivore (fish-eater) based on associated teeth material and similar to the pterosaurs known from Brazil of South America, with an estimated wingspan of 5 metres (16 ft). The specimen was later shown in the 2-hour National Geographic special program Sky Monsters (2006), which featured its discovery and life-size reconstruction attempt by Sereno's team. In his update entry of the 2000 Expedition of Niger, Sereno mentioned that his team found evidence of a large pterosaur specimen. In his 2000 interview, David Blackburn who participated in that expedition recounted the pterosaur partial wing discovery. He later discussed about the Elrhaz Formation pterosaur specimens in a 2002 conference abstract, stated to be the "only documented pterosaurian appendicular material from Africa", with the left humerus belonging to a tapejaroid and the partial wing belonging to an anhanguerid.
"Aktisaurus" (meaning coast or shoreline lizard) is a nomen ex dissertationae created by Hallie Pritchett Street in her PhD thesis as a new genus to contain the species originally named Mosasaurus conodon (specimen AMNH 1380), which has been of uncertain classification since its naming. The phylogenetic analysis of Street did not recover Mosasaurus as a monophyletic genus, and erected several new genera for species previously assigned to Mosasaurus. "Aktisaurus" was recovered as the sister taxon of Plotosaurus as demonstrated by the similar morphology of the carinae on their teeth.
"Amblyrhynchosaurus wiffeni" (meaning blunt-snouted lizard) is a genus and species of nomen ex dissertationae named by Hallie Pritchett Street in her PhD thesis centered on the taxonomy of Mosasaurus. The designated type specimen is NZGS CD 535, which is a mostly complete mosasaurine skull that was discovered in the Maungataniwha Sandstone on the North Island of New Zealand. "Amblyrhynchosaurus" has similar skull morphology to the genus Prognathodon, but it was recovered as the sister taxon of Moanasaurus and a close relative of Mosasaurus. The species epithet is in honor of Joan Wiffen, although the precise spelling is uncertain. It is spelled both as "wiffeni" and "wiffenae" in the text of the thesis.
"Antipodenectes" (meaning swimmer from the other side of the world) is a nomen ex dissertationae erected by Hallie Pritchett Street in her PhD thesis to contain the species Mosasaurus mokoroa, which was named by S.P. Welles and D.R. Gregg in 1971. In her phylogenetic analysis, Street did not recover M. mokora as being within a monophyletic Mosasaurus genus, so named a new genus to contain this taxon. It was recovered as a close relative of Plotosaurus as well as "Aktisaurus". The type specimen is CM Zfr-1, which was discovered in the Conway Formation from the South Island of New Zealand.
The "Aust Colossus" is an informal name given to the giant ichthyosaur specimens (BRSMG Cb3869, BRSMG Cb3870, BRSMG Cb4063 and BRSUG 7007) discovered from the Late Triassic (Rhaetian) Westbury Formation at the Aust Cliff. "Aust Colossus" has been tentatively estimated to be even larger than the 25 metres (82 ft) long ichthyosaur Ichthyotitan from the same formation, possibly over 30 metres (98 ft) long, though the authors acknowledge that this is a very speculative estimate.
"Batoremys" is a genus of putative macrobaenid turtle from the Early Cretaceous of Mongolia. The intended type species "Batoremys leptis" was never given formal description, so it remains a nomen nudum.
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