. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 52 Bulletin Museum of Comparative Zoology, Vol. 135, No. 2 TETRAGONURIDAE STROMATEIDAE. Figure 7. Dendrogram showing probable relationships of the five stromateoid families. more fully in the family accounts, are ex- pressed diagrammatically in Figure 7. Fossils. The Cretaceous , usu- ally considered a stromateid (Arambourg, 1954) has been shown by Patterson (1964) to be a polymixioid, standing, interestingly enough, near Bcnjcopsis. Camnp,odcs ceph- alus, from the Monte Bolca beds of Austria, is well describe
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 52 Bulletin Museum of Comparative Zoology, Vol. 135, No. 2 TETRAGONURIDAE STROMATEIDAE. Figure 7. Dendrogram showing probable relationships of the five stromateoid families. more fully in the family accounts, are ex- pressed diagrammatically in Figure 7. Fossils. The Cretaceous , usu- ally considered a stromateid (Arambourg, 1954) has been shown by Patterson (1964) to be a polymixioid, standing, interestingly enough, near Bcnjcopsis. Camnp,odcs ceph- alus, from the Monte Bolca beds of Austria, is well described and figured by Heckel (1856). Though it looks somewhat like some stromateoids and was considered a nomeid by Jordan (1923), the diagnostic characters are missing and it cannot be af- filiated with this group with any certainty. AspidoJepis Geinitz 1868, based on a scale, was considered a stromateid by Jordan (1923). But the scales of the majority of stromateoids are in no way distinctive, and thus the possible relationships of this fossil genus cannot be determined. Two new fossil genera have been found by Bonde (1966) in the lower Eocene Mo-clay of Denmark. Key tu Stronuiteoid Families 1 (6j. Two dorsal fins, distinctly, though scarcely, separated, the first usually with ten to twenty spines; if there are fewer than ten spines, the longest spine is about the same length as the longest dorsal finray. Pelvic fins al- ways present. Vomer, palatines, and basibranchials toothed or not. 2 2 (5). The first dorsal fin with about ten long, slender spines, often folded into a groove, the longest spine nearly as long as, or longer than, the longest finray in the second dorsal. Anal fin- rays 14 to 30. Scales cycloid, thin, deciduous. Fleshy lateral keels on peduncle near caudal fin base absent or only slightly de\eloped. Vertebrae 29 to 42 -- 3 3 (4). Vomer, palatines, and usually basi- branchials with small, often almost indistinguishable, teeth. Caudal pe- duncle compressed, its leas
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