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Systematics and taxonomy of Eocene tomistomine crocodylians from Britain and northern Europe
Journal article   Open access   Peer reviewed

Systematics and taxonomy of Eocene tomistomine crocodylians from Britain and northern Europe

Christopher A Brochu
Palaeontology, Vol.50(4), pp.917-928
07/2007
DOI: 10.1111/j.1475-4983.2007.00679.x
url
https://doi.org/10.1111/j.1475-4983.2007.00679.xView
Published (Version of record) Open Access

Abstract

The holotype of Dollosuchus dixoni (Owen) from the Early-Middle Eocene Bracklesham Beds of England is a set of mandibular fragments that cannot be distinguished from corresponding parts of other longirostrine crocodylians. An isolated humerus from the Bracklesham Beds is consistent with a gavialoid, but it cannot be referred to the holotype of D. dixoni. The name Dollosuchoides densmorei is established for the well-preserved skull and skeleton of a tomistomine from the Middle Eocene of Belgium that had been referred to D. dixoni. It can be clearly distinguished from the basal tomistomine 'Crocodilus' spenceri Buckland from the Lower Eocene of England, which cannot be referred to Dollosuchoides and is provisionally referred to Kentisuchus Mook. Although basal within Tomistominae, Dollosuchoides is more closely related to Tomistoma than to Kentisuchus. © 2007 The Palaeontological Association.
Belgium England Europe France United Kingdom Archosauria bones Bracklesham Group Cenozoic Chordata Crocodilia Diapsida Dollosuchoides Dollosuchoides densmorei Dollosuchus dixoni Eocene Great Britain Isle of Sheppey Kent England Kentisuchus Kentisuchus spenceri London Clay lower Eocene mandibles middle Eocene Paleogene phylogeny Reptilia taxonomy Tertiary Tetrapoda Tomistominae Vertebrata Vertebrate paleontology Western Europe Ypresian

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