Addendum to ‘Revision of the Late Jurassic teleosaurid genus Machimosaurus (Crocodylomorpha, Thalattosuchia)’

This addendum is to ensure that the ICZN (International Commission on Zoological Nomenclature) Code criteria for the availability of new nomenclatural acts are satisfied. In our original publication [1], the newly established taxon Machimosaurus buffetauti was not named in accordance with the ICZN Code, specifically it failed to fulfil Article 8.5.3. This addendum, being a ‘corrigendum’ in the sense of the Glossary of the Code, should be consulted alongside the original publication [1]. However, it is this addendum that fulfils the ICZN Code criteria for establishing the name M. buffetauti . As such, the date of publication and nominal authority of that nomenclatural act is the date that this addendum has been published.

This addendum fulfils Article 8.5.3 of the ICZN Code, namely to ‘be registered in the Official Register of Zoological Nomenclature (ZooBank) (see Article 78.2.4)’. Thus, we have officially registered the new nomenculatural act M. buffetauti (in addition to registering the genus, type species and the publication establishing them). Note that at present (14/Jan/2015), ZooBank only accepts new names, as other nomenclatural acts (such as amendment of spellings) are not currently supported. As such, Machimosaurus is currently registered under Madrimosaurus (see [1] for details). Below are the resultant LSIDs (Life Science Identifiers), and we provide an updated Systematic Palaeontology section from Young et al . [1] thus ensuring M. buffetauti sp. nov. is now a valid name.

In addition to being registered with ZooBank, and having the LSIDs recorded within, the electronic edition of this work was published in a journal with an ISSN, and has been archived and is available from the following digital repositories: CLOCKSS and PORTICO.

Institutional abbreviations. DFMMh, Dinosaurier-Freilichtmuseum Munchehagen, Lower Saxony, Germany; GPIT, Palaontologische Sammlung der …


Introduction
This addendum is to ensure that the ICZN (International Commission on Zoological Nomenclature) Code criteria for the availability of new nomenclatural acts are satisfied. In our original publication [1], the newly established taxon buffetauti was not named in accordance with the ICZN Code, specifically it failed to fulfil Article 8.5.3. This addendum, being a 'corrigendum' in the sense of the Glossary of the Code, should be consulted alongside the original publication [1]. However, it is this addendum that fulfils the ICZN Code criteria for establishing the name M. buffetauti. As such, the date of publication and nominal authority of that nomenclatural act is the date that this addendum has been published.
This addendum fulfils Article 8.5.3 of the ICZN Code, namely to 'be registered in the Official Register of Zoological Nomenclature (ZooBank) (see Article 78.2.4)'. Thus, we have officially registered the new nomenculatural act M. buffetauti (in addition to registering the genus, type species and the publication establishing them). Note that at present (14/Jan/2015), ZooBank only accepts new names, as other nomenclatural acts (such as amendment of spellings) are not currently supported. As such, Machimosaurus is currently registered under Madrimosaurus (see [1] for details). Below are the resultant LSIDs (Life Science Identifiers), and we provide an updated Systematic Palaeontology section from Young et al. [1] thus ensuring M. buffetauti sp. nov. is now a valid name.
In addition to being registered with ZooBank, and having the LSIDs recorded within, the electronic edition of this work was published in a journal with an ISSN, and has been archived and is available from the following digital repositories: CLOCKSS and PORTICO.
Etymology. 'Buffetaut's pugnacious lizard'. Named in honour of Eric Buffetaut (b. 1950), whose research has greatly elucidated thalattosuchian and crocodylomorph evolution. inter-alveolar spaces between the maxillary and dentary alveoli are variable in size (thalattosuchian symplesiomorphy); orbits are sub-circular in shape (transverse and anteroposterior axes are sub-equal; the Steneosaurus brevior holotype also has circular orbits)*; the quadrates have a single large circular depression on the dorsal surface near the hemicondyles*; basioccipital apophysis has a 'U-shaped' crosssection (teleosaurid symplesiomorphy); the inter-basioccipital tubera notch is a wide and gentle inverse semi-circle when seen in occipital view (teleosaurid symplesiomorphy); basioccipital tuberosities (basal tubera) are reduced in size when seen in occipital view (apomorphy shared with Machimosaurus mosae); axis neural arch dorsal margin is strongly concave when seen in lateral view*; axis postzygapophyses terminate significantly posterior to posterior-surface of the centrum view (somewhat similar to that seen in Steneosaurus durobrivensis); coracoid glenoid process (process near the glenoid fossa that projects posterodorsally) is elongate, extending considerably from the head of the coracoid, and is a sub-isosceles triangle in shape when seen in lateral view*; coracoid postglenoid process anterior margin is very slightly concave, and terminates approximately in the same frontal plane as the glenoid*; coracoid postglenoid process posterior margin is strongly concave, and terminates approximately in the same frontal plane as the posterior-end of the glenoid process*; dorsal osteoderm ornamentation is composed of small-to-large irregularly shaped pits arranged in a random manner, that are well separated from one another (somewhat similar to Steneosaurus leedsi).
Steneosaurus burgensis. The name S. burgensis, and S. burgensis chanuti, have been applied to the Machimosaurus skull from Ain, France [4][5][6]8]. These specific and sub-specific names are however nomina nuda. Both Jarrin [5] and Chanel [6] stated that the Ain skull was sent to Caen for preparation and study by Eugène Eudes-Deslongchamps, who proposed the name Steneosaurus burgensis for the specimen, in consultation with the Société d'émulation de l'Ain. Neither Jarrin [4,5] nor Chanel [6] established the name under Article 12 of the ICZN Code as: they did not describe the specimen, nor did they provide a definition of the species; they simply reported that the name was proposed by Eudes-Deslongchamps. Unfortunately, Eudes-Deslongchamps never published his description of the Ain skull [6,8]. The specimen was not formally described until 1982, and then it was referred to Machimosaurus hugii [8]. The sub-specific epithet chanuti was apparently established by those who did not fully understand zoological nomenclature [8], as it was added to the Ain skull's specimen plaque solely to honour the discoverer [6,8].
Our decision to establish a new taxon based on SMNS 91415, and not formally establish S. burgensis for the Ain skull was for several reasons: (i) the Ain skull is partially reconstructed, and it is unclear how