We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
A NEW DERCETID FISH (NEOTELEOSTEI: AULOPIFORMES) FROM THE TURONIAN OF THE PELOTAS BASIN, SOUTHERN BRAZIL.
- Authors
De Figueiredo, Francisco J.; Gallo, Valéria
- Abstract
Dercetid fishes are common in Tethyan marine deposits of Europe, Asia and Africa. In this paper, we describe a South American dercetid fish, Brazilodercetis longirostris gen. et sp. nov., based on juvenile and adult specimens found in core samples at c. 4000 m sediment depth in the Atlântida Formation (Pelotas Basin, southern Brazil). Brazilodercetis longirostris is a slender, elongate fish recognized on the basis of the following features: prominent snout; contact between mesethmoid and frontals very anterior to the orbit; mesethmoid separating the premaxillae for half of their length; juvenile specimens bearing wedge-like teeth on the anterior third of maxilla; long and shallow crest crossing epioccipital, parietal and posterior border of frontal; a pipe-like preopercle; and reduced neural spine at the middle point of neural arch. Brazilodercetis shares a number of features with the other dercetids, including a pointed snout that is longer than the lower jaw (with Rhynchodercetis and Hastichthys), a medioparietal skull roof (with Cyranichthys and Benthesikyme), an unroofed posttemporal fossa (with Dercetoides, Rhynchodercetis and Pelargorhynchus), a flange on the anguloarticular (with Dercetoides, Hastichthys, Rhynchodercetis and Cyranichthys), untoothed premaxillae (with Hastichthys and probably Rhynchodercetis), and a single row of teeth on the maxillae (with Dercetis, Benthesikyme, Rhynchodercetis, Pelargorhynchus, Dercetoides and Hastichthys).
- Subjects
FISHES; MARINE sediments; SEDIMENTS; SKULL; VERTEBRATES
- Publication
Palaeontology, 2006, Vol 49, Issue 2, p445
- ISSN
0031-0239
- Publication type
Article
- DOI
10.1111/j.1475-4983.2006.00540.x