The earliest ammonite faunas from the Andean Tithonian of the Neuquén-Mendoza Basin, Argentina - Chile

Phylogeny of Selected Sepiidae (Mollusca, Cephalopoda) on 12S, 16S, and COI Sequences, with Comments on the Taxonomic Reliability of Several Morphological Characters

“…On the basis of present information, the occurrence of simoceratin species in the Americas is inter− preted as relating the arrival of Tethyan (ubiquitous) taxa to available shelf environments in these areas, a phenomenon that largely involved ammonites throughout Jurassic times. This scenario is compatible with a general model for inter− preting patterns of ammonoid biogeography (Olóriz 1985(Olóriz , 1990, identified in the Americas (Mexican areas included) under a rather variable degree of understanding (see Olóriz 1985Olóriz , 1987Olóriz , 1990Olóriz , 1992Leanza and Olóriz 1987;Olóriz et al 1988Olóriz et al , 1990Leanza and Zeiss 1992;Cecca 1999;Parent and Capello 1999;Villaseñor et al 2000aVillaseñor et al , 2003Par− ent 2001;Villaseñor and Olóriz 2001, 2004, 2009, Parent et al 2006, among others, for precise appliance of the model and/or compatible interpretations). A conceptual comple− ment to this template is provided by assuming biogeographic dynamics as recognised from present cephalopods (e.g., Nor− man 2003; Yoshida et al 2006;Bolstad 2009;Gillanders et al 2009) and the potential application to past cephalopod re− cords (e.g., Olóriz and Villaseñor 2010; and references therein)-see Notes on Simoceratinae chapter above.…”

“…Among citations with− out illustrations, Leanza and Hugo (1977) alluded to Krantz's specimen and reported Simoceras aff. S. volanense Krantz, 1928non Oppel (1863 from the same section or area studied by Krantz (1928); Leanza and Zeiss (1990, 1992, 1994 and Parent and Capello (1999) cited the occurrence of Simoceras in the Neuquen Basin, Argentina; Leanza (in Leanza and Zeiss 1990) cited Volanoceras from the same locality, and Parent (2001) and Parent et al (2006) mentioned Volanoceras kran− tzense Cantú−Chapa, 1990. The mention without illustration made by Krantz (1928) of a geographically intermediate re− cord of Simoceras in Peru (Welter 1913in Krantz 1928 was not taken into account in later revisions of simoceratins, and was unavailable for control.…”

“…Krantz (1928) distinguished his specimen from Simoceras schwert− schlageri Schneid, 1915 on the basis of its stronger, more ra− dial sculpture. Later interpretations of this specimen include those of Santantonio (1986), Cecca (1999: 22) and Carlo Sarti in personal communication to Parent and Capello (1999), who reinterpret the Argentinean specimen as Simoceras aesi− nense ; Fözy (1988) raises doubts about the species− and even genus−level meaning; Cantú−Chapa (1990) put forth the species Volanoceras krantzense Cantú− Chapa, 1990, a proposal followed by Parent (2001), Cecca (2002a), who considered Simoceras (Pseudovolanoceras) krantzense Cantú−Chapa, 1990 a genuine species after exami− nation of a gypsum cast, Schweigert et al (2002) and Parent et al (2006);and Villaseñor et al (2000b) foresee the possi− bility of revealing a local subspecies of S. aesinense (Mene− ghini, 1885) (see below). Imlay (1942: pl.…”

Some perisphinctoid ammonites of the Štramberk Limestone and their dating with associated microfossils (Tithonian to Lower Berriasian, Outer Western Carpathians, Czech Republic)

“…Recently, the species E. eigeltingense has been attributed to the genus Lithacoceras by Parent et al, 2006Parent et al, , 2013. In accordance with the above-mentioned authors, we also classify the Štramberk specimen as belonging to the genus Lithacoceras.…”

The marine Jurassic of Argentina: a biostratigraphic framework

“…A detailed zonal scheme (see below) was developed for west-central Argentina. Successive changes (Parent, 2001(Parent, , 2003Parent et al, 2006a) to the ammonite systematics and biostratigraphy await substantiation on a thorough systematic study of new and extensive field collections.…”