Also known as D cirque
Where: British Columbia, Canada (54.5° N, 120.7° W: paleocoordinates 25.3° N, 34.0° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Vega-Phroso Member (Sulphur Mountain Formation), Smithian (251.3 - 247.2 Ma)
• "the Lower Triassic Vega-Phroso Siltstone Member of the Sulphur Mountain Formation (Lower–Middle Triassic)" (Cuthbertson et al. 2013, p. 832)
• bed-level stratigraphic resolution
Environment/lithology: marine; siltstone and silty limestone
Size class: macrofossils
Preservation: mold/impression
Collected by Royal Tyrrell Museum of Palaeontology field crew in 1989-1995; reposited in the TMP
• "In 1989, a Royal Tyrrell Museum of Palaeontology field crew collected the counterpart slab of TMP 89.127.3 from Lower Triassic deposits of the Sulphur Mountain Formation (Lower–Middle Triassic) of the Wapiti Lake region of east-central British Columbia, Canada...The part slab, preserving the complimentary mirror image of the counterpart, but also the majority of the skull in both lateral and dorsal views, was collected during the 1995 field season"
Primary reference: D. B. Brinkman, Z. Xijin, and E. L. Nicholls. 1992. A primitive ichthyosaur from the Lower Triassic of British Columbia, Canada. Palaeontology 35(2):465-474 [M. Carrano/H. Street]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 105083: authorized by Matthew Carrano, entered by Hallie Street on 15.02.2011, edited by Matthew Clapham, Roger Benson and Bethany Allen
Creative Commons license: CC BY (attribution)
Taxonomic list
| Actinopteri | |
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| Reptilia | |
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Phalarodon nordenskioeldii4 Hulke 1873 ichthyosaur TMP 89.127.7, articulated anterior skeleton, including partial skull and lower jaws, pectoral girdle, humerus, cervicals and anterior dorsals, neural spines, ribs and gastralia; TMP 89.127.14, caudal vertebrae; TMP 89.127.15, posterior skull, preserved in dorsal view, lower jaw with teeth, anterior dorsal vertebrae, humerus; TMP 89.127.21, dentary, lower jaw elements, teeth; TMP 89.127.23, dentary, teeth; TMP 89.127.25, dorsal vertebrae; TMP 89.127.26, posterior dorsal vertebrae, femur, fibula, astragalus; TMP 89.127.28, dentary, teeth; TMP 9l.l22.1, incomplete skull, mandible, anterior vertebral column, girdle elements; TMP 9l.l22.4, dentary, teeth; TMP 91.122.5, mid-dorsal vertebrae; TMP 91.122.9, dentaries, teeth
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Gulosaurus helmi n. gen. n. sp.1
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Paralonectes merriami n. gen. n. sp.3 Nicholls and Brinkman 1993 diapsid Holotype. -TMP 89.127.1. Skull, mandible, scattered verte- brae and ribs, isolated appendicular elements (ischium, pro- podial); TMP 89.127.2. Maxilla, lacrimal, and possibly prefrontal
Agkistrognathus campbelli n. gen. n. sp.3 Nicholls and Brinkman 1993 diapsid Holotype: TMP 89.127.6. Incomplete and disarticulated skull and mandibles. Elements present include premaxilla, maxilla, vomer, both dentaries, angular, splenial(?), and unidentified elements; TMP 89.127.19. Fragment of dentary
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| Chondrichthyes | |
"Eugeneodontida indet." = Eugeneodontiformes2
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