Harebayaspis Adrain & Pérez-Peris 2021, n. gen.
Harebayaspis n. gen. Type species. H. plurima n. sp., from the Table Cove Formation (Darriwilian), western Newfoundland, Canada (Laurentia). Other species. Parapilekia jacquelinae Fortey, 1980, Valhallfonna Formation (Dapingian), Ny Friesland, Svalbard, arctic Norway (Laurentian-affinity East Svalba...
| Main Authors: | , |
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| Format: | Other/Unknown Material |
| Language: | unknown |
| Published: |
2021
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| Online Access: | https://zenodo.org/record/5531921 https://doi.org/10.5281/zenodo.5531921 |
| Summary: | Harebayaspis n. gen. Type species. H. plurima n. sp., from the Table Cove Formation (Darriwilian), western Newfoundland, Canada (Laurentia). Other species. Parapilekia jacquelinae Fortey, 1980, Valhallfonna Formation (Dapingian), Ny Friesland, Svalbard, arctic Norway (Laurentian-affinity East Svalbard Terrane); Macrogrammus pengi Edgecombe, Chatterton, Vaccari, and Waisfeld, 1999, Gualcamayo Formation (Darriwilian), San Juan Province, Argentina (Cuyunia Terrane); Macrogrammus rafi Edgecombe, Chatterton, Vaccari, and Waisfeld, 1999, Las Aguaditas Formation (Darriwilian), San Juan Province, Argentina (Cuyunia Terrane); Macrogrammus sp. of Waisfeld and Vaccari (2003, p. 303), Gualcamayo Formation (Dapingian), San Juan Province, Argentina (Cuyunia Terrane); Harebayaspis sp. (“Undetermined proparian species” and “Undetermined genus and species” of Ross [1958, p. 569, pl. 84, figs 9–11]), limestone clast in volcaniclastic breccia of the Valmy Formation (Floian), Lander County, Nevada, USA. Etymology. From Hare Bay, in which the type locality of the type species is located, and the Greek noun aspis, shield. Gender is feminine. Diagnosis. Eyes relatively anteriorly placed, rear of palpebral lobe just behind lateral termination of S2; area of fixigenal field present anterior to eye ridge but of restricted extent; L1 with subquadrate outline, S1 abaxially transverse, with adaxial posterior bend; librigenal field long (exsag.) and narrow (tr.); pygidium with 4–7 segments. Discussion. A new genus is proposed for a group of Laurentian or Laurentian-affinity species known from the Floian to Darriwilian. Peng (1990) recognized that the only species of this group then known, Parapilekia jacquelinae Fortey, 1980, from the Dapingian of the East Svalbard Terrane, had cranidial similarities to the poorly known Macrogrammus scylfense Whittard, 1966, from the Floian of the Shelve Formation of Shropshire, England (Avalonia), and suggested that Fortey’s species should probably be assigned to Macrogrammus. Edgecombe et al. (1999) ... |
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