identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
5A3F1F07FF953C45D6A57CFF96F9FF96.text	5A3F1F07FF953C45D6A57CFF96F9FF96.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Lusitanisuchus mitracostatus (SEIFFERT 1970)	<div><p>LUSITANISUCHUS MITRACOSTATUS (SEIFFERT, 1970)</p><p>(FIG. 2 A)</p></div>	https://treatment.plazi.org/id/5A3F1F07FF953C45D6A57CFF96F9FF96	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Guillaume, Alexandre R D;Moreno-Azanza, Miguel;Puértolas-Pascual, Eduardo;Mateus, Octávio	Guillaume, Alexandre R D, Moreno-Azanza, Miguel, Puértolas-Pascual, Eduardo, Mateus, Octávio (2020): Palaeobiodiversity of crocodylomorphs from the Lourinhã Formation based on the tooth record: insights into the palaeoecology of the Late Jurassic of Portugal. Zoological Journal of the Linnean Society 189 (2): 549-583, DOI: 10.1093/zoolinnean/zlz112, URL: https://academic.oup.com/zoolinnean/article/189/2/549/5648910
5A3F1F07FF803C54D694784A968EF91D.text	5A3F1F07FF803C54D694784A968EF91D.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Lusitanisuchus mitracostatus (SEIFFERT 1970)	<div><p>LUSITANISUCHUS MITRACOSTATUS (SEIFFERT, 1970)</p><p>(FIGS 11–13)</p><p>Referred material: MG26081 (IPFUB Gui Croc 7505); MG28911 (IPFUB Gui 75 6.03); (IPFUB Gui Croc 7516); MG26103 (IPFUB Gui Croc 8002); (IPFUB Gui Croc 8009).</p><p>Locality, horizon and age: Guimarota Mine (Leiria, Portugal); Alcobaça Formation; Kimmeridgian.</p><p>Description</p><p>Anterior premaxillary and maxillary teeth (Fig. 11): IPFUB Gui Croc 8009 has three teeth preserved, whereas the other specimens have only one preserved. Because they are incomplete, the position in the tooth series cannot be determined. The root is exhibited in MG26103. Their height ranges from 1.014 mm to 2.373 mm and their width from 0.608 mm to 0.882 mm, with an H/W ratio from 1.668 to 2.690. The teeth are conical, with a broad, pointed apex. They do not seem compressed, suggesting a subcircular cross-section, with a faint constriction at the base of the crown. The teeth are weakly posteriorly curved. Both distal and mesial margins seem to exhibit a faint carina with no denticles observed. The enamel on both labial and lingual surfaces is covered by subparallel ridges converging toward the apex, forming basiapical striations (Seiffert, 1973; Schwarz &amp; Fechner, 2004; pers. obs.).</p><p>Dentary teeth (Figs 12, 13): Three teeth are preserved in MG28911 and three more alveoli without teeth are preserved. However, their position cannot be determined because the dentary is not completely preserved. MG26081 is almost complete, with two teeth preserved in the last positions. The previous two alveoli do not preserve teeth; then two more teeth are preserved, with one broken. The most anterior alveoli are not preserved. The root is exhibited in one tooth in MG28911. The height of the teeth ranges from 0.703 mm to 1.215 mm and their width from 0.54 mm to 0.993 mm, with an H/W ratio from 1.200 to 1.392. The teeth are spatulate, with a sagittate (arrowheadshaped) to truncate (straight and horizontal) apex, similar to a human incisor. They are labiolingually compressed, and there is a faint constriction visible at the base of the crown. Both labial and lingual surfaces are planar, and the edge of the apex is sharp. The enamel on both lingual and labial surfaces is covered by ridges forming basiapical striations, extending toward the apex to form vertical false denticles. These denticles are irregular in size; the lateralmost ones are small and barely visible, whereas the centralmost one is pointing outward from the apex, forming a small tip. No denticles are observed on the distal and mesial carinae of the teeth. In the lower part, ridges form parallel basiapical striations, but in the upper part, the central ridges converge toward the small tip of the apex, whereas the lateralmost striations have a flabelliform distribution and extend toward the margins and the edge of the apex, forming small lateral denticles (Seiffert, 1973; Schwarz &amp; Fechner, 2004; pers. obs.).</p><p>Remarks: The conical morphotype of the premaxillary and anterior maxillary teeth in  Lusitanisuchus mitracostatus is commonly observed in Crocodylomorpha. Their overall shape and the ornamentation of the enamel are similar to teeth of morphotype 7, attributed to goniopholidids and usually associated with generalist feeding behaviour (Buffetaut &amp; Ford, 1979; Schwarz &amp; Salisbury, 2005; Lauprasert et al., 2011; Salisbury &amp; Naish, 2011; Puértolas-Pascual et al., 2015b), even though they are smaller and broader, as shown by their H/W ratios. The conical teeth of  L. mitracostatus can also be compared with teeth of morphotype 2, attributed to atoposaurids, showing a similar shape and proportion, but the labial basiapical ridges in morphotype 2, when present, are more strongly marked than in  L. mitracostatus . Material with better exposed teeth will enable us to confirm the difference between these two morphotypes.</p><p>The morphology of the dentary teeth differs from that observed in other mesoeucrocodylians (Schwarz &amp; Fechner, 2004), including atoposaurids, despite the similarornamentationsuggestingaparticularecological specialization. This morphology also differs from the molariform teeth characteristic of bernissartiids: the edge of the apex is sharper in  Lusitanisuchus mitracostatus and comprises small denticles, whereas it is blunt and smooth in bernissartiids, the enamel in bernissartiids is more ornamented and some teeth observed in  L. mitracostatus have a more pointed apex than is observed in  Bernissartiidae . Not being multicuspids, they also differ from the spatulate teeth observed in  Simosuchus and  Uruguaysuchus (Buckley et al., 2000) and they differ from those observed in  Acynodon by being less broad and more labiolingually compressed (Buscalioni et al., 1997; Martin, 2007; Delfino et al., 2008; Blanco et al., 2020). Given the preservation of the dentaries, no substantial difference could be observed in the tooth series between anterior and posterior teeth.</p></div>	https://treatment.plazi.org/id/5A3F1F07FF803C54D694784A968EF91D	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		Plazi	Guillaume, Alexandre R D;Moreno-Azanza, Miguel;Puértolas-Pascual, Eduardo;Mateus, Octávio	Guillaume, Alexandre R D, Moreno-Azanza, Miguel, Puértolas-Pascual, Eduardo, Mateus, Octávio (2020): Palaeobiodiversity of crocodylomorphs from the Lourinhã Formation based on the tooth record: insights into the palaeoecology of the Late Jurassic of Portugal. Zoological Journal of the Linnean Society 189 (2): 549-583, DOI: 10.1093/zoolinnean/zlz112, URL: https://academic.oup.com/zoolinnean/article/189/2/549/5648910
