Hieronymus Posted August 23, 2011 Share Posted August 23, 2011 (edited) Squatina cranei occurs in older Cretaceous strata -it's been reported from Albian, Cenomanian, Turonian,... (Biddle, 1993; Cappetta, 1975; Herman, 1977; Woodward, 1888 & 1911; ...) Squatina decipiens is known from the Albian (Biddle, 1993; Cappetta, 1975; Herman, 1977) The genus Cederstroemia is also known from such strata (Herman, 1977; Siverson, 1995; Bourdon et al., 2011) In addition, also check Cretorectolobus robustus (Underwood & Cumbaa, 2010), Cretorectolobus sp. (Cappetta & Case, 1999) and Cretorectolobus olsoni (Case, 1978; Case & Cappetta, 1997). Be aware that Squatinids and Orectolobiforms aren't that rare while Johnlongia is not a common find to say the least... Odds are that two worn Squatinidae or Orectolobiforms will be much more likely to find than two Johnlongia's. EDIT: As stated by others before, Johnlongia has a very deep nutrient groove. If this groove would have worn away on these specimens, I'd think that there would be practically no root left since the groove is so deep. The root is still quite fat lingually on both specimens. Edited August 24, 2011 by Hieronymus http://rhaetianlorraine.webs.com/ Link to comment Share on other sites More sharing options...
Tyrannotitan Posted August 25, 2011 Share Posted August 25, 2011 (edited) Ye, looks like a Rhyncodon to me Edited August 25, 2011 by Tyrannotitan Fossils fossils and again fossils _________________________________ Kyivsharks Link to comment Share on other sites More sharing options...
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