A new genus of Late Cretaceous angel shark (Elasmobranchii; Squatinidae), with comments on squatinid phylogeny Author Maisey, John G. Author Ehret, Dana J. Author Denton, John S. S. text American Museum Novitates 2020 2020-06-16 2020 3954 1 1 https://bioone.org/journals/american-museum-novitates/volume-2020/issue-3954/3954.1/A-New-Genus-of-Late-Cretaceous-Angel-Shark-Elasmobranchii-Squatinidae/10.1206/3954.1.full journal article 10.1206/3954.1 0003-0082 5355514 Cretasquatina americana , new species DIAGNOSIS: As for genus. ETYMOLOGY: From the Latinized version of the name Amerigo . HOLOTYPE : ALMNH 2792 ( figs. 2–4 , 7 , 10 , 11 ), from the Early Campanian Mooreville Chalk (unnamed member below the Arcola Limestone Member), Harrell Station Paleontological Site , Marion Junction , Dallas County , Alabama : an associated series of six anterior vertebrae ( ALMNH 2792 -C; fig. 2 ), an almost complete left palatoquadrate approximately 125 mm long ( ALMNH 2792 -A), most of a ceratohyal approximately 120 mm long ( ALMNH 2792 -B), a small fragment of cartilage from the braincase, possibly part of the postorbital process ( ALMNH 2792 -D), plus numerous smaller indeterminate fragments of tessellated calcified cartilage (hereafter abbreviated to TCC ). REFERRED MATERIAL: ALMNH 1040 ( fig. 8 ), including: almost complete right palatoquadrate approx. 143 mm long ( ALMNH 1040-A); anterior part of left palatoquadrate ( ALMNH 1040-B); two fragments of expanded arcualia from the first vertebra ( ALMNH 1040-C); incomplete second vertebra ( ALMNH 1040-D); vertebral centrum of uncertain position ( ALMNH 1040-E.); heavily abraded vertebral centrum showing fine concentric rings ( ALMNH 1040-F); numerous indeterminate fragments of calcified cartilage.