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A Bollettino della Società Paleontologica Italiana, 54 (3), 2015. Modena
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A preliminary study on the ornamentation patterns of ganoid scales in some Mesozoic actinopterygian fishes
Claudio Garbelli & Andrea Tintori
C. Garbelli, Dipartimento di Scienze della Terra “Ardito Desio”, Università degli Studi di Milano, via Mangiagalli, 2, 20122 Milano, Italy; claudio. [email protected] A. Tintori, Dipartimento di Scienze della Terra “Ardito Desio”, Università degli Studi di Milano, via Mangiagalli, 2, 20122 Milano, Italy; andrea.tintori@ unimi.it
SUPPLEMENTARY ONLINE MATERIAL 1
Tab. S1 - List of the specimens investigated. Abbreviation. MPUM = Museo di Paleontologia del Dipartimento di Scienze della Terra“ A. Desio”, Università degli Studi di Milano; MCSNB = Museo Civico di Storia Naturale di Bergamo; MVSLZ = Museo della Vicaria di S. Lorenzo in Zogno (Bergamo, Italy); MCSNL = Museo Cantonale di Storia Naturale di Lugano; NHM = Natural History Musuem of London; GMPKU-P, Geological Museum of the Peking University, Paleontological collection (Beijing, China).
Specie Reference Specimen id. Age, formation and country Lower Lias, Lower Jurassic, Lyme regis, Ptycholepis gracilis Davis 1884 NHM P7789 Dorset, England Upper Lias, Lower Jurassic, Whitby, North Ptycholepis bollensis Agassiz 1833 NHM P858a Yorkshire, England Lower Triassic, Lyme regis, Dorset, En- Eugnathus philpotae Agassiz 1839 NHM P3576 gland Middle Triassic, Upper Member of the Luoxiongichthys hyperdorsalis Wen et al. 2012 GMPKU-P-1580 Guanling Formation, China Norian, Upper Triassic, Zorzino Limestone, Paralepidotus ornatus Agassiz 1843 MVSLZ - ST82916 Lombardy, Italy Norian, Upper Triassic, Zorzino Limestone, Semiolepis brembanus Lombardo and Tintori 2008 MPUM 9288 Lombardy, Italy Lower Lias,Lower Jurassic, Lyme regys , Dapedium politum Leach 1822 NHM P1585 Dorset, England Norian, Upper Triassic, Zorzino Limestone, Dapedium noricum Tintori 1983 MCSNB 3316 Lombardy, Italy Norian, Upper Triassic, Zorzino Limestone, Sargodon tomicus Plieninger 1847 MPUM 7516 Lombardy, Italy Ladinian, Middle Triassic, Kalkschieferzone Allolepidotus bellottii De Alessandri 1910 4431 of Meride Limestone, Monte San Giorgio, Switzerland Norian, Upper Triassic, Zorzino Limestone, Gabanellia agilis Tintori and Lombardo 1996 MPUM 7751 Lombardy, Italy Ladinian, Middle Triassic, Buchenstein for- Stoppania gaetanii Lombardo 2008 MPUM 9542 mation, Lombary, Italy Ladinian, Middle Triassic, Kalkschieferzone Felberia excelsa Lombardo and Tintori 2004 MCSNL 5034 of Meride Limestone, Monte San Giorgio, Switzerland Lombardo and Brambillasca Norian, Upper Triassic, Zorzino Limestone, Endennia licia MPUM 8434 2005 Lombardy, Italy Lower Triassic?,Middle Sakamena Group, Bobasatrania sp. White 1932 coll. Tintori Madagascar Ladinian, Middle Triassic, Zhuganpo Mem- Asialepidotus sp. Su 1959 GMPKU-P-3025 ber of the Falang Formation, China Bollettino della Società Paleontologica Italiana, 54 (3), 2015
Fig. S1 - A - Homologous landmarks selected on the basis of their functional or ecologic role. The landmarks used are: (1) tip of the snout, (2) anterior edge of the first scale in the dorsal ridge, (3) origin of the dorsal fin, (4) posterior insertion of the dorsal fin, (5) posterior edge of the last scale in the dorsal lobe of the caudal fin, (6) posterior edge of the last scale in the lateral line, (7) ventral insertion of the caudal lobe, (8) posterior insertion of the anal fin, (9) origin of the anal fin, (10) anterior insertion of the pectoral fin, (11) posterior edge of the dental. B - Semilandmarks, equally spaced and aligned using the minimum bending energy criterion, used to define the body outline. Modified from Lombardo (2001).
Fig. S2 - Box plot representing the distribution of morphological descriptors values clustered by positions of the scales. C. Garbelli & A. Tintori - Supplementary online material 1
Tab. S2 - Summary of the results from internal cluster validation analysis. The best coefficients are marked with asterisk (*).
Number of 2 3 4 5 6 7 8 9 10 groups Connectivity 5.0933* 6.0389 9.6802 13.9671 21.2671 23.8861 27.8984 31.7659 39.5325 hierarchical Dunn 0.0978 0.1411 0.1827* 0.1827(*) 0.1143 0.1358 0.1358 0.1358 0.1502 Silhouette 0.6068 0.4972 0.4164 0.4184 0.4727 0.4858 0.4681 0.4628 0.4586 Connectivity 5.6675 13.7103 22.8048 28.0881 23.4222 27.231 38.5214 45.1913 48.2738 kmeans Dunn 0.0888 0.0827 0.0662 0.0483 0.1292 0.1324 0.0443 0.0504 0.0491 Silhouette 0.6208* 0.4635 0.3849 0.4444 0.4749 0.4884 0.4647 0.4585 0.4539 Connectivity 5.6675 15.7028 32.6337 32.2929 37.1242 36.4226 40.7095 44.2722 52.5028 pam Dunn 0.0888 0.0312 0.0312 0.0538 0.0294 0.0339 0.0509 0.0562 0.0562 Silhouette 0.6208 0.454 0.3817 0.4168 0.4611 0.4507 0.4551 0.436 0.4152
Fig. S3 - Plot of the results summarized in Tab. S2.