Arid
DOI10.4202/app.00331.2016
A new species of the neopterygian fish Enchodus from the Duwi Formation, Campanian, Late Cretaceous, Western Desert, central Egypt
Holloway, Waymon L.1,2; Claeson, Kerin M.3; Sallam, Hesham M.4; El-Sayed, Sanaa4; Kora, Mahmoud4; Sertich, Joseph J. W.5; O’Connor, Patrick M.1,6
通讯作者Holloway, Waymon L.
来源期刊ACTA PALAEONTOLOGICA POLONICA
ISSN0567-7920
EISSN1732-2421
出版年2017
卷号62期号:3页码:603-611
英文摘要

The neopterygian fish Enchodus was a widespread, speciose genus consisting of approximately 30 recognized species that were temporally distributed from the late Early Cretaceous through the Paleocene. Many Enchodus specimens are fragmentary cranial remains or isolated dental elements, as is the case for previously reported occurrences in Egypt. Here, we present the most complete specimen of Enchodus recovered from the Late Cretaceous of northeast Africa. The specimen was collected from the upper Campanian Duwi Formation, near the village of Tineida (Dakhla Oasis, Western Desert, Egypt). The new species, Enchodus tineidae sp. nov., consists of right and left dentaries, a partial ectopterygoid, and other cranial bones. The size of the specimen places it into the upper body-size range for the genus. The palatine tooth, an element often useful for diagnosing Enchodus to the species level, is not preserved, but a combination of other cranial characters supports the referral of this specimen to Enchodus. In particular, the dentary preserves three symphysial rostroventral prongs and two tooth rows, the lateral of which consists of small denticles, whereas the medial row comprises large, mediolaterally-compressed teeth. The rostral-most tooth exhibits the highest crown, whereas the rest of the teeth are of lower, variable crown heights. The eight robust, caudal-most medial-row teeth are distributed in a cluster pattern never before observed in Enchodus. Additionally, the dentary and preopercle are both without dermal ornamentation, and the mandibular sensory canal is closed. Phylogenetic analysis recovers this new species as the sister species to E. dirus from North America. Along with previously described materials from Israel, Jordan, Syria, Lebanon, Italy, Morocco, and Libya, this specimen represents a thirteenth species from the northwestern Tethyan geographic distribution of Enchodus.


英文关键词Actinopterygii Enchodus Cretaceous Campanian Egypt
类型Article
语种英语
国家USA ; Egypt
收录类别SCI-E
WOS记录号WOS:000412863300011
WOS关键词ACTINOPTERYGIAN FISHES ; QUSEIR FORMATION ; AULOPIFORMES ; PALEOCENE ; ENCHODONTOIDEI ; DAKHLA ; GENERA ; FOSSIL ; SYRIA
WOS类目Paleontology
WOS研究方向Paleontology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/196984
作者单位1.Ohio Univ, Ctr Ecol & Evolutionary Studies, Irvine Hall, Athens, OH 45701 USA;
2.Ohio Univ, Heritage Coll Osteopath Med, Dept Biol Sci, 107 Irvine Hall, Athens, OH 45701 USA;
3.Philadelphia Coll Osteopath Med, Dept Anat, 4170 City Ave, Philadelphia, PA 19131 USA;
4.Mansoura Univ, Vertebrate Paleontol Ctr, Dept Geol, Fac Sci, Mansoura 35516, Egypt;
5.Denver Museum Nat & Sci, Dept Earth Sci, Denver, CO 80205 USA;
6.Ohio Univ, Heritage Coll Osteopath Med, Dept Biomed Sci, 228 Irvine Hall, Athens, OH 45701 USA
推荐引用方式
GB/T 7714
Holloway, Waymon L.,Claeson, Kerin M.,Sallam, Hesham M.,et al. A new species of the neopterygian fish Enchodus from the Duwi Formation, Campanian, Late Cretaceous, Western Desert, central Egypt[J],2017,62(3):603-611.
APA Holloway, Waymon L..,Claeson, Kerin M..,Sallam, Hesham M..,El-Sayed, Sanaa.,Kora, Mahmoud.,...&O’Connor, Patrick M..(2017).A new species of the neopterygian fish Enchodus from the Duwi Formation, Campanian, Late Cretaceous, Western Desert, central Egypt.ACTA PALAEONTOLOGICA POLONICA,62(3),603-611.
MLA Holloway, Waymon L.,et al."A new species of the neopterygian fish Enchodus from the Duwi Formation, Campanian, Late Cretaceous, Western Desert, central Egypt".ACTA PALAEONTOLOGICA POLONICA 62.3(2017):603-611.
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