A new lizardfish (Teleostei, Aulopiformes) from the Late Cretaceous Bearpaw Formation of Alberta, Canada, with a revised diagnosis ofApateodus(Aulopiformes, Ichthyotringoidei)

Offshore marine actinopterygian assemblages from the Maastrichtian–Paleogene of the Pindos Unit in Eurytania, Greece

“…† E. dirus from the Maastrichtian of the Pindos Unit in Gavdos Island ( Cavin, Alexopoulos & Piuz, 2012 ). Collectively, these observations are suggestive of additional undiscovered diversity within Late Cretaceous aulopiforms (see also Davis & Fielitz, 2010 ; Newbrey & Konishi, 2015 ). At the family level and at higher taxonomic levels, the Maastrichtian assemblages from Eurytania are dominated by faunal components, such as elopomorphs and epipelagic aulopiforms, typical of Late Cretaceous marine sites of the Tethys and beyond ( Davis, 1887 ; Arambourg, 1952 ; Arambourg, 1954 ; Siegfried, 1954 ; Goody, 1969 ; Forey et al, 2003 ; Khalloufi, Ouarhache & Lelièvre, 2010 ; Friedman, 2012 ), while pelagic acanthomorph teleosts, which gradually rise to prominence in post-extinction faunas ( Friedman, 2010 ; Near et al, 2013 ; Guinot & Cavin, 2016 ; Alfaro et al, 2018 ; Friedman et al, 2019 ), are seemingly absent (depending on the affinities of the unidentified eurypterygian).…”

“… References for the faunas: (1) English Chalk, southern England, U.K. ( Friedman et al, 2016 ); (2) Bearpaw Fm., St Mary River, Alberta, Canada ( Newbrey & Konishi, 2015 ); (3) Nardò, Italy ( Sorbini, 1981 ); (4) Pierre Shale Group, South Dakota, USA ( Parris, Smith-Grandstaff & Gallagher, 2007 ); (5) Mexcala Fm., Guerrero, Mexico ( Alvarado-Ortega et al, 2006 ); (6) Liburnica Fm., Trebiciano, Italy ( Bannikov & Sorbini, 2000 ; Carnevale & Johnson, 2015 ; Taverne, Capasso & Arbulla, 2019 ); (7) López de Bertodano Fm., Seymour Island, Antarctica ( Grande & Chatterjee, 1987 ; Cione et al, 2018 ); (8) Moroccan Phosphates ( Arambourg, 1952 ; Bardet et al, 2017 ); (9) Saldeño Fm., Mendoza, Argentina ( López-Arbarello, Arratia & Tunik, 2003 ); (10) “Type Maastrichtia”, Netherlands ( Friedman, 2012 ); (11) Harrana, Jordan ( Kaddumi, 2009 ; Lindgren, Kaddumi & Polcyn, 2013 ); (12) Pindos Unit, Gavdos Island, Greece (Cavin et al, 2012); (13) Pindos Unit, Eurytania, Greece ( Koch & Nicolaus, 1969 ; this work); (14) Mont-Aimé, Champagne, France ( Priem, 1898 ; Priem, 1908 ; Montenat et al, 2018 ); (15) Tenejapa-Lacandón Unit, Palenque, Chiapas, Mexico ( Alvarado-Ortega et al, 2015 ); (16) Eqaluik Fm., Kangilia, Greenland ( Capobianco, Foreman & Friedman, 2019 ); (17) Stevns Klint and København Limestone Fms., Stevns Klint and Faxe, Denmark/Limhamn, Sweden ( Adolfssen, Milàn & Friedman, 2017 ); (18) Landana, Cabinda, Angola ( Solé et al, 2019 ; Taverne et al, 2019 ); (19) Máncora Fm., Negritos, Peru ( Friedman & Johnson, 2005 ); (20) Fur Fm., Stolle Klint Clay, Jutland, Denmark ( Bonde, 1997 ); (21) Danatina Fm., Turkmenistan ( Bannikov, 1993 ); (22) Abazinka Fm., Gerpegezh, Kabardino-Balkaria, Russia ( Bannikov & Carnevale, 2012 ; Bannikov et al, 2017 ). Dotted lines represent weakly supported temporal range extensions.…”

“…We note however that the Eurytanian taxon differs from all known species of † Ichthyotringa in bearing multiple anteriorly inclined fangs, and also in exhibiting a coronoid process of the anguloarticular. Longirostrine cranial geometry and pronounced upper and lower jaw heterodonty differentiate the eurytanian fossil from other putative, shorter-snouted †ichthyotringoids, including the Turonian–Maastrichtian † Apateodus (see Da Silva & Gallo, 2011 ; Friedman, 2012 ; Goody, 1969 ; Newbrey & Konishi, 2015 ; but see Vernygora et al, 2018 , for a recent agnostic phylogenetic placement of the genus) and the Albian † Ursichthys ( Newbrey & Konishi, 2015 ). A more detailed taxonomic comparison and investigation of this material is warranted and will be attempted elsewhere.…”

Computed tomography scanning as a tool for linking the skeletal and otolith‐based fossil records of teleost fishes

“…D–G). Apateodus first appeared in the late Early Cretaceous (Albian) and extended to the end of the Late Cretaceous, being known from several localities throughout that interval (Newbrey & Konishi ). Our reinterpretation of these Late Cretaceous otoliths as belonging to that genus is thus more consistent with the body fossil record than past identifications.…”

“…The phylogenetic position of Apateodus within Aulopiformes is unclear, being considered a representative of the Ichthyotringoidei, an extinct aulopiform suborder (Davis & Fielitz, ). However, it has also been routinely aligned with the Alepisauroidei (Rosen ; Newbrey & Konishi ; Beckett et al . ).…”