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SOM/App64 3-Sachs Etal SOM.Pdf 1 http://app.pan.pl/SOM/app64_3-Sachs_etal_SOM.pdf SUPPLEMENTARY ONLINE MATERIAL FOR The mystery of Mystriosaurus: Redescribing the poorly known Early Jurassic teleosauroid thalattosuchians Mystriosaurus laurillardi and Steneosaurus brevior Sven Sachs, Michela M. Johnson, Mark T. Young, and Pascal Abel Published in Acta Palaeontologica Polonica 2019 64 (3): 565-579. https://doi.org/10.4202/app.00557.2018 Supplementary Online Material SOM Figures …………………………………………………………………………………….….. 2 S1–3. Comparison of skulls of teleosaurid thalattosuchians. S4. Comparing the neurovascular foramina of teleosaurid thalattosuchians. S5. Comparing the posterior skull and mandible of teleosaurid thalattosuchians. S6. Illustration of the missing portions in the skull reconstruction of Mystriosaurus laurillardi. SOM 1. CrocSuperMatrix Project Overview ………………………………………………………... 6 SOM 2. Hastings + Young (H+Y) dataset …………………………………………………………... 7 1) H+Y dataset – general information and scoring sources of the OTUs 2) H+Y dataset – character list SOM 3. Character and OTUs breakdowns of the merged, and parent, datasets …………………… 95 SOM 4. Supplementary references ……………………………………………………………...… 101 SOM 5. List of institutional abbreviations ………………………………………………………... 118 Mystriosaurus matrix data available at http://app.pan.pl/SOM/app64_3-Sachs_etal_SOM/HY_Matrix_Mystriosaurus_1OTU.xlsx http://app.pan.pl/SOM/app64_3-Sachs_etal_SOM/Character_matrix_Mystriosaurus_1OTU.txt http://app.pan.pl/SOM/app64_3-Sachs_etal_SOM/Character_matrix_Mystriosaurus_2OTU.txt 2 SOM Fig. S1. Comparison of skulls between teleosaurid thalattosuchians Mystriosaurus laurillardi (HLMD V946-948) holotype, lower Toarcian of Altdorf (southern Germany) (A), Mystriosaurus laurillardi (NHMUK PV OR 14781, holotype of Steneosaurus brevior) referred specimen, lower Toarcian of Whitby (Yorkshire, UK) (B), and (C) Steneosaurus bollensis (RE 551.762.130 A 0248), lower Toarcian of Holzmaden (southwestern Germany), in lateral view. Scale bars equal 5 cm. 3 SOM Fig. S2. Comparison of skulls between teleosaurid thalattosuchians Mystriosaurus laurillardi (HLMD V946-948) holotype, lower Toarcian of Altdorf (southern Germany) (A), Mystriosaurus laurillardi (NHMUK PV OR 14781, holotype of Steneosaurus brevior) referred specimen, lower Toarcian of Whitby (Yorkshire, UK) (B), and (C) Steneosaurus bollensis (RE 551.762.130 A 0248), lower Toarcian of Holzmaden (southwestern Germany), in dorsal view. Scale bars equal 5 cm. 4 SOM Fig. S3. Comparison of skulls between teleosaurid thalattosuchians Mystriosaurus laurillardi (HLMD V946-948) holotype, lower Toarcian of Altdorf (southern Germany) (A), Mystriosaurus laurillardi (NHMUK PV OR 14781, holotype of Steneosaurus brevior) referred specimen, lower Toarcian of Whitby (Yorkshire, UK) (B), ‘Steneosaurus cf. bollensis’ (NHMUK PV R 756) (C) and Steneosaurus bollensis ([MMG BwJ 565) (D), [GPIT-RE-9427] (E) and [SMNS 51753] (F)), all lower Toarcian of Holzmaden (southwestern Germany). Note that the nearly complete skull (NHMUK PV OR 14781) of Mys. laurillardi is much more robust and ornamented throughout, in addition to anteriorly directed external nares and circular orbits, differing from S. bollensis. Scale bars equal 15 cm. SOM Fig. S4. Comparing the neurovascular foramina of teleosaurid thalattosuchians Mystriosaurus laurillardi holotype (HLMD V946-948), lower Toarcian of Altdorf (southern Germany) (A); Mystriosaurus laurillardi (NHMUK PV OR 14781, holotype of Steneosaurus brevior) referred specimen, lower Toarcian of Whitby (Yorkshire, UK) (B); Machimosaurus buffetauti (SMNS 91415), lower Kimmeridgian of Neuffen (southwestern Germany) (C), Steneosaurus bollensis (PMU R161) (D) and Steneosaurus bollensis (SMNS 80235), both lower Toarcian of Holzmaden (southwestern Germany) (E). Scale bars equal 7 cm. 5 SOM Fig. S5. Comparing the posterior skull of (A) Mystriosaurus laurillardi (NHMUK PV OR 14781, holotype of Steneosaurus brevior) referred specimen, lower Toarcian of Whitby (Yorkshire, UK) and (B) Steneosaurus bollensis (GPIT-RE-9427), lower Toarcian of Holzmaden (southwestern Germany). Note that the anterolateral margin of the supratemporal fossae in Mys. laurillardi are inclined anteriorly, whereas in S. bollensis they are inclined more posteriorly. Comparing the posterior mandible of (C) Mystriosaurus laurillardi (NHMUK PV OR 14781) and (D) Steneosaurus bollensis (SMNS 58876). Scale bars equal (A) 15 cm, (B) 21 cm and (C, D) 15 cm. SOM Fig. S6. Illustration of the missing portions (dark) in the skull reconstruction of Mystriosaurus laurillardi shown in Fig. S4. 6 SOM 1. CrocSuperMatrix Project Overview Thus far two datasets have been successfully merged, those of Alexander Hastings and Mark Young (see Ristevski et al., 2018). This has formed the Hastings and Young dataset (referred to herein as the H+Y matrix). Currently, four datasets are in the process of being merged. The first two are the H+Y dataset and a modified version of the Andrade et al. (2011) dataset (herein referred to as the mA matrix). The first iteration of the H+Y and mA matrices were published in Ristevski et al. (2018). The third dataset, is a modification of the dataset published by Wilberg (2017), (herein referred to as the mW matrix). Note that Ősi et al. (2018) was the first paper to have all three of these datasets together, however therein the Wilberg (2017) dataset had not been re-structured to be the same as H+Y and mA datasets. Note that here we have done so, and also created two new sub-sections: 1) internal neuroanatomy, sensory systems and cranial exocrine glands, and 2) craniomandibular pneumaticity. A fourth dataset has also been added, a modification of the dataset recently published by Leardi et al. (2017), herein referred to as the mL matrix. This is an expansion of the dataset first published by Clark et al. (2000), and recently elaborated upon by Pol et al. (2013) and Leardi et al. (2017). The characters for both datasets have been organised into a common anatomical order, and broken down into the same 20 sub-sections: 1) skull geometry and dimensions 2) craniomandibular ornamentation 3) internal neuroanatomy, sensory systems and cranial exocrine glands 4) craniomandibular pneumaticity 5) rostral neurovascular foramina 6) cranial rostrum 7) skull roof 8) orbit and temporal region 9) palate and perichoanal structures 10) occipital 11) braincase, basicranium and suspensorium 12) mandibular geometry 13) mandible 14) dentition and alveolar morphologies 15) axial post-cranial skeleton 16) appendicular skeleton: pectoral girdle and forelimbs 17) appendicular skeleton: pelvic girdle and hind limbs 18) dermal ossifications: osteoderms 19) dermal ossifications: gastralia 20) soft tissue Herein we only use the H+Y dataset, as a larger paper on this project is currently in preparation. 7 SOM 2. Hastings + Young (H+Y) dataset SOM 2.1. H+Y dataset – general information and scoring sources of the OTUs The present list includes information for each operational taxonomic unit (OTU) included in the matrix. Fragmentary taxa (i.e. ones that are highly incomplete) are mentioned as: [fragmentary taxon]. OUTGROUP TAXON RAUISUCHIDAE (1 OTU) (1) Postosuchus kirkpatricki Chatterjee, 1985 DATA FROM: Nesbitt (2011), Weinbaum (2011), Weinbaum (2013). LOCALITY: Post (=Miller) Quarry, Texas, USA. FORMATION: Cooper Canyon Formation, Dockum Group. AGE: Norian, Late Triassic. INGROUP TAXA BASAL CROCODYLOMORPHS (= ‘SPHENOSUCHIANS’ SENSU LATO) (5 OTUs) (2) Dromicosuchus grallator Sues et al., 2003 DATA FROM: Sues et al. (2003), Nesbitt (2011). LOCALITY: West Genlee, Durham County, North Carolina, USA. FORMATION: Mudstone of Lithofacies Association II, Newark Super-Group. South-central region of Durham sub-basin of Deep River Basin. AGE: upper Carnian or lower Norian, Late Triassic. (3) Hesperosuchus cf. agilis DATA FROM: CM 29894; Clark et al. (2000), Nesbitt (2011). LOCALITY: Coelophysis Quarry, Ghost Ranch, northern New Mexico, USA. FORMATION: “siltstone member”, Chinle Formation. AGE: upper Norian–?Rhaetian, Late Triassic. (4) Terrestrisuchus gracilis Crush, 1984 DATA FROM: Crush (1984), Nesbitt (2011). LOCALITY: Pant-y-ffynon Quarry, Cowbridge, Glamorgan, Wales, UK. FORMATION: fissure fills in Carboniferous limestone. AGE: ?Rhaetian, Late Triassic. (5) Dibothrosuchus elaphros Simmons, 1965 DATA FROM: Wu (1986); Nesbitt (2011). LOCALITY: Huangchiatien, Lufeng, Yunnan, China. FORMATION: Zhangjiawa Formation, Lower Lufeng Group. AGE: Sinemurian–Pliensbachian, Lower Jurassic. (6) Junggarsuchus sloani Clark et al., 2004 DATA FROM: photographs of the holotype provided by Eric Wilberg; Clark et al. (2004). LOCALITY: Wucaiwan, Altay Prefecture, Xinjiang Province, NW China. FORMATION: lower part of the Shishugou Formation (= Wucaiwan Formation). AGE: Bathonian–Callovian, Middle Jurassic. BASAL CROCODYLIFORMS: ‘PROTOSUCHIANS’ SENSU LATO (4 OTUs) (7) Hemiprotosuchus leali Bonaparte, 1971 DATA FROM: Bonaparte (1971). LOCALITY: Quebrada de los Jachaleros, W La Rioja Province, Argentina. FORMATION: Los Colorados Formation. AGE: Coloradense, Norian, Upper Triassic. 8 (8) Protosuchus richardsoni Brown, 1933 DATA FROM: Colbert & Mook (1951), Nesbitt (2011). LOCALITY: Ward’s Terrace, Arizona, USA. FORMATION: upper half of the Moenave Formation, Glen Canyon Group. AGE: Hettangian, Lower Jurassic. (9) Protosuchus haughtoni (Busbey & Gow, 1984) DATA FROM: Gow (2000), Nesbitt (2011). LOCALITY: South Africa. FORMATION: Upper Elliot Formation. AGE: Lower Jurassic. (10) Eopneumatosuchus colberti Crompton & Smith, 1980 DATA
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