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Two new species of Dunkleosteus Lehman, 1956, from the Ohio Shale Formation (USA, Famennian) and the Kettle Point Formation (Canada, Upper Devonian), and …
RK Carr, WJ Hlavin - Zoological Journal of the Linnean Society, 2010 - academic.oup.com
Two pachyosteomorph arthrodires are described from the Upper Devonian of North
America, Dunkleosteus raveri sp. nov. and Dunkleosteus amblyodoratus sp. nov.(from the …
America, Dunkleosteus raveri sp. nov. and Dunkleosteus amblyodoratus sp. nov.(from the …
Devonian macrovertebrate assemblages and biogeography of East Gondwana (Australasia, Antarctica)
The biogeographic significance of Devonian macrovertebrate assemblages from East
Gondwana is reviewed, with updates incorporating recent discoveries including new …
Gondwana is reviewed, with updates incorporating recent discoveries including new …
Early bursts of disparity and the reorganization of character integration
'Early bursts' of morphological disparity (ie diversity of anatomical types) are common in the
fossil record. We typically model such bursts as elevated early rates of independent …
fossil record. We typically model such bursts as elevated early rates of independent …
Biomechanics, functional patterns, and disparity in Late Devonian arthrodires
Studies of ecological structure and diversity over time in extinct groups have always been
challenged by the inability to observe the behavior of fossil taxa directly. The only available …
challenged by the inability to observe the behavior of fossil taxa directly. The only available …
The internal cranial anatomy of Romundina stellina Ørvig, 1975 (Vertebrata, Placodermi, Acanthothoraci) and the origin of jawed vertebrates—Anatomical atlas of a …
Placoderms are considered as the first jawed vertebrates and constitute a paraphyletic
group in the stem-gnathostome grade. The acanthothoracid placoderms are among the …
group in the stem-gnathostome grade. The acanthothoracid placoderms are among the …
The phyllolepid placoderm Cowralepis mclachlani: Insights into the evolution of feeding mechanisms in jawed vertebrates
Remarkably preserved specimens of Cowralepis mclachlani Ritchie, 2005 (Proc Linn Soc
NSW 126: 215–259)(Phyllolepida, Placodermi) represent a unique ontogenetic sequence …
NSW 126: 215–259)(Phyllolepida, Placodermi) represent a unique ontogenetic sequence …
Revision of the genus Kujdanowiaspis Stensiö, 1942 (Placodermi, Arthrodira,“Actinolepida”) from the Lower Devonian of Podolia (Ukraine)
The genus Kujdanowiaspis has long been considered as the archetype of placoderms;
hence, it has been often used as outgroup in phylogenetic analyses involving placoderms …
hence, it has been often used as outgroup in phylogenetic analyses involving placoderms …
The earliest phyllolepid (Placodermi, Arthrodira) from the Late Lochkovian (Early Devonian) of Yunnan (South China)
Gavinaspis convergens, a new genus and species of the Phyllolepida (Placodermi:
Arthrodira), is described on the basis of skull remains from the Late Lochkovian (**tun …
Arthrodira), is described on the basis of skull remains from the Late Lochkovian (**tun …
Trait-based diversification shifts reflect differential extinction among fossil taxa
Evolution provides many cases of apparent shifts in diversification associated with particular
anatomical traits. Three general models connect these patterns to anatomical evolution:(i) …
anatomical traits. Three general models connect these patterns to anatomical evolution:(i) …
Shape variation between arthrodire morphotypes indicates possible feeding niches
Examining morphological patterns is key to understanding mechanics and function in
biological systems. In extinct taxa, there is a lack of observational or behavioral data to use …
biological systems. In extinct taxa, there is a lack of observational or behavioral data to use …