Metriorhynchidae

Metriorhynchidae is an extinct family of specialized, aquatic metriorhynchoid crocodyliforms from the Middle Jurassic to the Early Cretaceous period of Europe, North America and South America. The name Metriorhynchidae was coined by the Austrian zoologist Leopold Fitzinger in 1843. The group contains two subfamilies, the Metriorhynchinae and the Geosaurinae. They represent the most marine adapted of all archosaurs.

Description

Metriorhynchids are fully aquatic crocodyliforms. Their forelimbs were small and paddle-like, and unlike living crocodylians, they lost their osteoderms. Their body shape maximised hydrodynamy, as they did have a shark-like tail fluke. Like ichthyosaurs and plesiosaurs, metriorhynchids developed smooth, scaleless skin. However, unlike those marine reptiles, they were poikilothermic with little to no endothermic ability.
Metriorhynchids were the only group of archosaurs to become fully adapted to the marine realm, becoming pelagic in lifestyle. With tail flukes, reduced limb musculature, and long bones histologically comparable to other obligately aquatic animals, they were almost certainly incapable of terrestrial locomotion; combined with an unusually tall hip opening, as also seen in other obligately aquatic reptiles including the viviparous Keichousaurus, these characters suggest that metriorhynchids gave live birth. A fossil of a pregnant Dakosaurus female recovered from the Late Jurassic plattenkalk, Bavaria, preserves the complete skeleton of a neonate with small, paddle-like forelimbs unsuited for walking on land, similar to those of adults, further supporting live birth in metriorhynchids. Recent research posits that despite their successful adaptation to a pelagic lifestyle, basal metriorhynchids were uniquely disadvantaged among aquatic tetrapods in evolving into sustained swimmers due to little to no posterodorsal retraction of the external nares. The family has a wide geographic distribution, with material found in Argentina, Chile, Cuba, England, France, Germany, Italy, Mexico, Poland, Russia, Switzerland and Czech Republic.

Classification

analyses published during the 2000s cast doubt on the idea that many traditional metriorhynchid genera formed natural groups. The traditional species of Geosaurus, Dakosaurus and Cricosaurus were found to represent unnatural groups, and the species traditionally classified in these genera were reshuffled in a study published in November 2009 by Mark T. Young and Marco Brandalise de Andrade. The monophyly of Metriorhynchus and Teleidosaurus is also unsupported, and the species of these genera are pending reclassification.
The classification presented by Young and Andrade in 2009 was approved in later studies of the Metriorhynchidae. Metriorhynchidae is a node-based taxon defined in the PhyloCode by Mark T. Young and colleagues in 2024 as "the smallest clade within Metriorhynchoidea containing Thalattosuchus superciliosus, Gracilineustes leedsi, Metriorhynchus brevirostris, Rhacheosaurus gracilis, and Geosaurus giganteus" The cladogram below follows the topology from the 2020 analyses by Young et al. and reduced to genera only.

List of genera

The type genus of the family Metriorhynchidae is Metriorhynchus from the Middle to Late Jurassic. Other genera included within this family are Cricosaurus, Geosaurus, and Dakosaurus. Though once considered a metriorhynchid, Teleidosaurus has since been found to be slightly more distantly related to these animals within the superfamily Metriorhynchoidea.
Within this family, the genus Neustosaurus and Enaliosuchus are considered nomen dubium.
The genus Capelliniosuchus was once thought to be a metriorhynchid similar to Dakosaurus. However, it was later found to be a mosasaur.

Genus	Status	Author	Age	Location	Description	Synonyms	Images
Aggiosaurus		Ambayrac, 1913	late Oxfordian	France.	Sometimes considered to be a nomen dubium.		Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
Cricosaurus	Valid	Wagner, 1858	middle Oxfordian to upper Valanginian	Argentina, Chile, Cuba, England, France, Germany, Mexico, Russia and Switzerland.			Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
Dakosaurus	Valid	von Quenstedt, 1856	upper Kimmeridgian to lower Berriasian	Argentina, England, France, Germany, Mexico, Poland, Switzerland and possibly Russia.		Dacosaurus	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
Enaliosuchus	nomen dubium	Koken, 1883	Valanginian	Germany.		-	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
Geosaurus	Valid	Cuvier, 1824	upper Kimmeridgian to upper Valanginian	France, Germany, Italy and Switzerland.		Brachytaenius Halilimnosaurus	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
Gracilineustes	Valid	Young et al., 2010	middle Callovian to lower Kimmeridgian	England and France.			Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
Maledictosuchus	Valid	Parrilla-Bel et al., 2013	middle Callovian to Kimmeridgian	Spain and Mexico.			Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
Metriorhynchus	Valid	von Meyer, 1832	lower Kimmeridgian.	France.		Metiorychus	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
Neptunidraco	Valid	Cau & Fanti, 2011	earliest Bathonian	Italy.			Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
Neustosaurus	nomen dubium		Valanginian		— potential senior synonym of Enaliosuchus		Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
Plesiosuchus	Valid	Owen, 1884	late Kimmeridgian to early Tithonian	England and possibly Spain.			Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
Purranisaurus	Valid	Rusconi, 1948	upper Tithonian	Argentina and Chile.			Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
Rhacheosaurus	Valid	von Meyer, 1831	lower Tithonian	Germany.			Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
Suchodus	Valid	Lydekker, 1890	middle Callovian to lower Oxfordian	England and France.			Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
Thalattosuchus	Valid	Young et al., 2020	lower Callovian to lower Oxfordian	England and France.			Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
Torvoneustes	Valid	Andrade et al., 2010	Kimmeridgian to Tithonian	England.			Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
Tyrannoneustes	Valid	Young et al., 2013	Callovian	England.			Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
-	-	-	-	-	-	-	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
-	-	-	-	-	-	-	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
-	-	-	-	-	-	-	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
-	-	-	-	-	-	-	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
-	-	-	-	-	-	-	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
-	-	-	-	-	-	-	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
-	-	-	-	-	-	-	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
-	-	-	-	-	-	-	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
-	-	-	-	-	-	-	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
-	-	-	-	-	-	-	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
-	-	-	-	-	-	-	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
-	-	-	-	-	-	-	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
-	-	-	-	-	-	-	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
-	-	-	-	-	-	-	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
-	-	-	-	-	-	-	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
-	-	-	-	-	-	-	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
-	-	-	-	-	-	-	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
-	-	-	-	-	-	-	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
-	-	-	-	-	-	-	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
-	-	-	-	-	-	-	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
-	-	-	-	-	-	-	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
-	-	-	-	-	-	-	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
-	-	-	-	-	-	-	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
-	-	-	-	-	-	-	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
-	-	-	-	-	-	-	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
-	-	-	-	-	-	-	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
-	-	-	-	-	-	-	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
-	-	-	-	-	-	-	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
-	-	-	-	-	-	-	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis
-	-	-	-	-	-	-	Image:Geosaurus BW.jpg\|thumb\|center\|150px\|Cricosaurus suevicus Image:Dakosaurus BW.jpg\|thumb\|center\|150px\|Dakosaurus andiniensis Image:Metriorhynchus superciliosum.jpg\|thumb\|center\|150px\|Thalattosuchus superciliosus Image:Neptunidraco NT.jpg\|thumb\|center\|150px\|Neptunidraco ammoniticus Image:Suchodus BW.jpg\|thumb\|center\|150px\|'Metriorhynchus' casamiquelai Image:Suchodus durobrivense.jpg\|thumb\|center\|150px\|Suchodus durobrivensis