Choose another family AcartiidaeAegisthidaeAetideidaeArctokonstantinidaeArietellidaeAugaptilidaeBathypontiidaeBoholinidaeCalanidaeCandaciidaeCentropagidaeClausidiidaeClausocalanidaeClytemnestridaeCorycaeidaeDiaixidaeDiscoidaeEctinosomatidaeEpacteriscidaeEucalanidaeEuchaetidaeEuterpinidaeFosshageniidaeGiselinidaeHeterorhabdidaeHyperbionychidaeKyphocalanidaeLubbockiidaeLucicutiidaeMecynoceridaeMegacalanidaeMegapontiidaeMesaiokeratidaeMetridinidaeMiraciidaeMisophriidaeMonstrillidaeMormonillidaeNullosetigeridaeOithonidaeOncaeidaePalpophriidaeParacalanidaeParalubbockiidaeParapontellidaeParkiidaePhaennidaePlatycopiidaePontellidaePontoeciellidaePseudocyclopidaePseudocyclopiidaePseudodiaptomidaeRataniidaeRhincalanidaeRidgewayiidaeRostrocalanidaeRyocalanidaeSapphirinidaeScolecitrichidaeSpeleoithonidaeSpinocalanidaeStephidaeSulcanidaeTemoridaeThalestridaeTharybidaeThaumatopsyllidaeTisbidaeTortanidaeUrocopiidaeincertae sedis (Calanoida)incertae sedis (Cyclopoida)

Misophrioida ( Order )

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issued from : D. Jaume, G.A. Boxshall & T.M. Iliffe in J. Nat. Hist., 1998, 32. [p.672, Table 1]
Main distinguishing features between genera in the Spelepphria group.

issued from : D. Jaume & G.A. Boxshall in J. Nat. Hist., 1996, 30. [p.1593, Fig.5].
A, The current known distribution of Expansophria and Speleophriopsis; B, same stations translated on the 120 Myr BP paleocoastline map (Maps adapted from A.G. Smith & al., 1994).

According to the authors, the most parsimonious interpretation of the current known distribution of Expansophria (as Speleophriopsis) appears to be a relicts of an ancient (late Mesozoic), once widely distributed tropical/subtropical shallox-water fauna. Their known localities on a late Mesozoic paleocoastline map reveals a remarkable continuity between localities which are today separated by large distances and by continental land-masses. The coincidence with the borders of the former Tethys Sea is remarkable.
The distribution of both taxa appears to be the result of a vicariant processes associated with tectonic plate motion, with the opening of the Atlantic (ca. 120Myr BP) and the closure of the Tethys Sea (ca. 20 Myr BP) as the major vicariant events.. This conforms exactly with the explanation currently offered for similarity disjunct modern distributions displayed by numerous stygobiont malacostracean genera with limited dispersal abilities (see in Stock, 1993).
The presence of this genus (as Speleophriopsis in Mediterranean waters is especially notesworthy, as it apparently contradicts the widely held view that this sea does not harbour an ancient marine fauna. Such a fauna would have vanished during the Messinian Salinity Crisis, a putative complete desiccation event (approximately 5.5 Myr BP). Both taxa are tightly associated with coastal, hypogean waters and their potential for dispersal is limited. These characteristics indicate that it is unlikely that they could have invaded the Mediterranean Sea only after its reflooding during the Pliocene. These taxa inhabit waters with salinities only marginally reduced from the normal marine waters and never penetrate into brackish or fresh inland waters

issued from : D. Jaume, G.A. Boxshall & W.F. Humphreys in Zool. J. Linnean Soc., 2001, 133. [p.21, Fig.14].
A: current known distribution of the calanoid genus Speleophria (black triangle) and the stygocyclopid Stygocyclopia 'black circle).
B: same stations translated on a 155 Myr BP palaeocoastline map. (Maps adapted from A.G. Smith & al., 1994).

issued from : D. Jaume & G.A. Boxshall in J. Nat. Hist., 1996, 30. [p.1593, Fig.5].
A, The current known distribution of Speleophriopsis and Expansophria; B, same stations translated on the 120 Myr BP paleocoastline map (Maps taken from Smith & al., 1994).
According to the authors, the most parsimonious interpretation of the current known distribution of Speleophriopsis (as Expansophria) appears to be a relicts of an ancient (late Mesozoic), once widely distributed tropical/subtropical shallox-water fauna. Their known localities on a late Mesozoic paleocoastline map reveals a remarkable continuity between localities which are today separated by large distances and by continental land-masses. The coincidence with the borders of the former Tethys Sea is remarkable.
The distribution of both taxa appears to be the result of a vicariant processes associated with tectonic plate motion, with the opening of the Atlantic (ca. 120Myr BP) and the closure of the Tethys Sea (ca. 20 Myr BP) as the major vicariant events.. This conforms exactly with the explanation currently offered for similarity disjunct modern distributions displayed by numerous stygobiont malacostracean genera with limited dispersal abilities (see in Stock, 1993).
The presence of this genus (as Expansophria in Mediterranean waters is especially notesworthy, as it apparently contradicts the widely held view that this sea does not harbour an ancient marine fauna. Such a fauna would have vanished during the Messinian Salinity Crisis, a putative complete desiccation event (approximately 5.5 Myr BP). Both taxa are tightly associated with coastal, hypogean waters and their potential for dispersal is limited. These characteristics indicate that it is unlikely that they could have invaded the Mediterranean Sea only after its reflooding during the Pliocene. These taxa inhabit waters with salinities only marginally reduced from the normal marine waters and never penetrate into brackish or fresh inland waters