Andrew R. Milner
American Museum of Natural History
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Publications 53
#1Jennifer A. ClackH-Index: 27
#2Marcello Ruta (University of Lincoln)H-Index: 29
Last. Keturah Zoe SmithsonH-Index: 1
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The enigmatic tetrapod Acherontiscus caledoniae from the Pendleian stage of the Early Carboniferous shows heterodontous and durophagous teeth, representing the earliest known examples of significan...
1 CitationsSource
#1Jason D. Pardo (U of C: University of Calgary)H-Index: 9
#2Bryan J. Small (Museum of Texas Tech University)H-Index: 11
Last. Adam K. Huttenlocker (SC: University of Southern California)H-Index: 15
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The Carboniferous–Permian transition (CPT) was Earth’s last pre-Quaternary icehouse–greenhouse transition, recording major shifts in late Palaeozoic climate regimes and increased continental seasonality over approximately 40 Myr. Its parallels to Quaternary climate change have inspired recent investigations into the impacts of purported rainforest collapse on palaeotropical vertebrate diversity, but little is known about how the protracted spatial dynamics of this transition impacted the emergen...
2 CitationsSource
#1Florian Witzmann (Leibniz Association)H-Index: 1
#2Ralf Werneburg (Naturhistorisches Museum)H-Index: 12
Last. Andrew R. Milner (Natural History Museum)H-Index: 19
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Among the famous Middle Pennsylvanian tetrapod fauna from Linton, Ohio, embolomeres are extremely rare and known only from three snout fragments which are referred to as the eogyrinid Leptophractus obsoletus. We describe herein a skull roof fragment from Linton that consists of the left orbital and cheek region and parts of the palate preserved in dorsal view, which belonged to a skull of approximately 100 mm length. Although diagnostic parts such as the tabular horn and the otic region are not ...
1 CitationsSource
#1Jérémy Anquetin (Jura Elektroapparate)H-Index: 11
#2Andrew R. Milner (Natural History Museum)H-Index: 19
Abstract The enigmatic vertebrate taxon Cyrtura temnospondyla is reassessed following the location and reuniting of both counterparts. The specimen, comprising a series of caudal vertebrae from the Tithonian Solnhofen Limestone, has variously been interpreted as derived either from a temnospondyl amphibian, or a turtle, or to be indeterminate. The redescription of this caudal series reveals that the vertebrae have a single centrum, in contrast to previous descriptions. This specimen is here inte...
2 CitationsSource
#1Rainer R. Schoch (Staatliches Museum für Naturkunde Stuttgart)H-Index: 30
#2Andrew R. Milner (Natural History Museum)H-Index: 19
Last. Florian Witzmann (Museum für Naturkunde)H-Index: 18
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A partial skull from the Lower Keuper (Middle Triassic) of Germany is recognized as belonging to a new genus and species of plagiosaurid temnospondyl. It is readily identified by the following autapomorphies: (1) extremely large orbits medially extended to give very thin interorbital region and cheek; (2) posterior skull table abbreviated, with splint-like supratemporals, postparietals and parietals; (3) supraorbital lateral line sulcus absent on frontal, with blind ending on parietal, and conti...
5 CitationsSource
#1Jozef Klembara (Comenius University in Bratislava)H-Index: 14
#2Jennifer A. ClackH-Index: 27
Last. Marcello Ruta (University of Lincoln)H-Index: 29
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ABSTRACT We review the cranial morphology of the Late Carboniferous terrestrial tetrapod Gephyrostegus bohemicus from the coal deposits of the Nýřany Basin in the Czech Republic. Gephyrostegus is known from several skulls ranging in length from about 25 mm to about 58 mm (holotype). The narrow skull is about twice as long as wide and shows a well-ossified quadrate and articular, but no evidence of braincase ossification. Autapomorphic features include a pustular ornamentation on some skull table...
9 CitationsSource
#1Hillary C. Maddin (Harvard University)H-Index: 13
#2Nadia B. Fröbisch (Museum für Naturkunde)H-Index: 13
Last. Andrew R. Milner (Natural History Museum)H-Index: 19
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Abstract The accuracy of the taxonomic assignment of three skulls in the collections of the Museum of Comparative Zoology (Harvard University) to the Early Permian taxon Tersomius texensis has been called into question. Here, we re-evaluate the holotype of T. texensis and the three MCZ specimens within the context of discoveries made over the last few years. The results of our phylogenetic analyses corroborate our morphological assessments, revealing that only one of the three skulls (MCZ 1912) ...
9 CitationsSource
The morphology and taxonomy of the Early Permian temnospondyl amphibian genus Trimerorhachis are revised. Using previously undescribed material from Texas, numerous details of the cranial osteology of T. insignis Cope, 1878 are redescribed. Emphasis is placed on the structure of the palate, the sutures of the skull roof, and on the variation of some phylogenetically important character-states. The taxonomic revision, which makes particular use of morphometric characters, supports the four specie...
12 CitationsSource
#1Hillary C. MaddinH-Index: 13
#2Nadia B. FröbischH-Index: 13
Last. Andrew R. MilnerH-Index: 19
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Comptes Rendus Palevol - In Press.Proof corrected by the author Available online since vendredi 6 septembre 2013
#1Andrew R. Milner (Natural History Museum)H-Index: 19
Chelone obovata was named and described but not figured by Owen (1842) on the basis of a specimen (or specimens) from the Purbeck Limestone Group in the J. Chaning Pearce Collection. This material was subsequently lost to the scientific community and C. obovata has been treated as a nomen dubium in the few later works that mention it. One part—the carapace—has been relocated in the collections of the National Museum of Wales in Cardiff. It is preserved in ventral aspect and is a carapace of the ...