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Showing results for tags 'thorectichthys'.
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From the album: Vertebrates
Thorectichthys rhadinus Murray & Wilson, 2013 Upper Cretaceous Cenomanian / Turonian Akrabou Formation Gara es Sbâa Agoult Morocco Length 5cm / 2" Murray & Wilson described two Thorectichthys species from Gara es Sbâa: T. marocensis with a very pronounced body depth and T. rhadinus (from “rhadinos” meaning slender, tapering or lithe) in reference to the body depth being much less than in T. marocensis. These fish are quite often mistakenly offered as Satericthys sp or Triplomystus sp. Lit.: Two new paraclupeid fishes (Clupeomorpha: Ellimmichthyiformes) from the Upper Cretaceous of Morocco. Mesozoic Fishes 5 – Global Diversity and Evolution, G. Arratia, H.-P. Schultze & M. V. H. Wilson (eds.): pp. 267-290, 8 figs., 2 tabs., 2 apps.-
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- akrabou formation
- cretaceous
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There are two Thorectichthys species in Gara es Sbâa: The deep-bodied T. marocensis and the more slender T. rhadinus. Etymology: Generic name from the Greek "thorectes", masculine, meaning a warrior armed with a breast plate, in reference to the abdominal scutes of the fish, and "ichthys" meaning fish. Species name from the Greek “rhadinos” meaning slender, tapering or lithe, in reference to the body depth of this species being much less than in T. marocensis. Taxonomy from Murray and Wilson 2013. Diagnosis from Murray and Wilson 2013, p. 276: "Differs from the type species Thorectichthys marocensis by having six predorsal bones (instead of five), having more total (24-26 compared to 22-25) and postpelvic (8-9 compared to 6-7) abdominal scutes and more pairs of ribs (17-18 compared to 14-15). In addition, there are 10-11 scutes in the predorsal series (8 in T. marocensis), and the body depth is 40-48 % of standard length (compared to 57-65 % in T. marocensis). Identified by oilshale using Murray and Wilson 2013. References: Murray, A. & Wilson M. (2013) Two new paraclupeid fishes (Clupeomorpha: Ellimmichthyiformes) from the Upper Cretaceous of Morocco. Mesozoic Fishes 5 – Global Diversity and Evolution, G. Arratia, H.-P. Schultze & M. V. H. Wilson (eds.): pp. 267-290, 8 figs., 2 tabs., 2 apps.
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- 2
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- akrabou formation
- cretaceous
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There are two Thorectichthys species in Gara es Sbâa: The deep-bodied T. marocensis and the more slender T. rhadinus. Etymology: Generic name from the Greek "thorectes", masculine, meaning a warrior armed with a breast plate, in reference to the abdominal scutes of the fish, and "ichthys" meaning fish. Taxonomy from Murray and Wilson 2013. Diagnosis for Thorectichthys marocensis from Murray and Wilson 2013, p. 269: "A deep-bodied fish with body depth being between 57 and 65 % of standard length, having a deeper body in relation to standard length than Ellimmichthys, Ellimma, ‘Diplomystus’ solignaci, Scutatuspinosus and Paraclupea, and having a less-deep body than Ezkutuberezi and Tycheroichthys. Rhombichthys as described varies in body depth with size. Eight scutes in predorsal series [compared to 7 in ‘D’. solignaci, or more than 9 in Paraclupea (18), Ellimmichthys (12-14), Ellimma branneri (12-13), Rhombichthys (12 or more), Scutatuspinosus (10-11), Tycheroichthys (16), and Triplomystus (12-13) [but 8 present in Ellimma cruzi, more than five in Ezkutuberezi]. The number of scutes and depth of body also distinguish it from the second new species in this genus." Identified by oilshale using Murray and Wilson 2013. References: Murray, A. & Wilson M. (2013) Two new paraclupeid fishes (Clupeomorpha: Ellimmichthyiformes) from the Upper Cretaceous of Morocco. Mesozoic Fishes 5 – Global Diversity and Evolution, G. Arratia, H.-P. Schultze & M. V. H. Wilson (eds.): pp. 267-290, 8 figs., 2 tabs., 2 apps.
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- 1
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- akrabou formation
- gara es sbâa
- (and 5 more)