Gour Lazib HGL50 (Eocene to of Algeria)
Also known as Draa Hammada; Glib Zegdou outlier; Hammada du Dra
Where: Bechar region, Algeria (30.0° N, 4.0° W: paleocoordinates 24.4° N, 6.5° W)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Intermediate Member (Glib Zegdou Formation), Ypresian to Ypresian (56.0 - 41.3 Ma)
• 1 meter below HGL51; late Early or early Middle Eocene
• bed-level stratigraphic resolution
Environment/lithology: terrestrial; lenticular sandstone
• Fluvatile origin
• Il renferme un horizon lenticulaire de grès jaune à rouge, à boules d’argile, très riche en charophytes. [yellow to red lenticular sandstone with clay balls, rich in charophytes]
•The
•fossiliferous level is a lenticular bed of carbonate cemented sandstone.
Size classes: macrofossils, microfossils
Collected in 2003 onwards
Collection methods: chemical,
• Approximately 450 kg of sediment acid washed.
Primary reference: M. Adaci, R. Tabuce, F. Mebrouk, M. Bensalah, P.-H. Fabre, L. Hautier, J.-J. Jaeger, V. Lazzari, M. Mahboubi, L. Marivaux, O. Otero, S. Peigné, and H. Tong. 2007. Nouveaux sites à vertébrés paléogènes dans la région des Gour Lazib (Sahara nord-occidental, Algérie). Comptes Rendus Palevol 6:535-544 [P. Holroyd/P. Holroyd]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 77014: authorized by Patricia Holroyd, entered by Patricia Holroyd on 16.12.2007, edited by Philip Mannion, Matthew Jones, Mark Uhen and Grace Varnham
Creative Commons license: CC BY (attribution)
Taxonomic list
• some mammals are new
Show authors, comments, and common names
| unclassified | |
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| Amphibia | |
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Anura indet.2 Fischer von Waldheim 1813 frog Twenty-three fragments (UM/HGL50-530) and more than 200 tiny fragments (UM/HGL50-531) of nonornamented maxillae; one incomplete atlas (UM/HGL50-532); one procoelous complex atlas+V2 represented by fused centra (UM/HGL50-533); one almost complete presacral vertebra (UM/HGL50-534); 27 incomplete or fragmentary presacral vertebrae (UM/HGL50-535); one almost complete humerus (UM/HGL50-536); 56 distal extremities of humeri (UM/ HGL50-537); 69 radioulna (UM/HGL50-538); one relatively complete ilium (UM/HGL50-539); 10 incomplete ilia (UM/ HGL50-540, 541); 25 tibiofibulae (UM/HGL50-542)
? Anura indet.2 Fischer von Waldheim 1813 frog Twenty-four presumed distal carpals 3-4-5 (UM/ HGL50-543-545)
Ranoidea indet.2 Rafinesque 1814 frog Six pre-8th vertebrae (UM/HGL50-524); eight 8th vertebrae (UM/HGL50-525); seven sacral vertebrae (UM/ HGL50-526); 21 humeri (UM/HGL50-527, 528); 14 ilia (UM/ HGL50-529).
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Rocekophryne ornata n. gen. n. sp.2 Rage et al. 2021 clawed frog Holotype. The posterior half of a frontoparietal (UM/HGL50- 489); Twenty-seven incomplete or fragmentary frontoparietals (UM/HGL50-490 to 493); 89 incomplete or fragmentary maxillae (UM/HGL50-494 to 503); three incomplete premaxillae (UM/HGL50-504, 505); seven fragmentary squamosals (UM/HGL50-506, 507); more than 260 fragments of ornamented cranial bones (UM/HGL50-508 to 512); five pre-8th presacral vertebrae (UM/HGL50-513, 514); five 8th presacral vertebrae (UM/HGL50-515, 516); one sacral vertebra (UM/HGL50-517); three humeri (UM/HGL50- 518 to 520); ten ilia (UM/HGL50-521 to 523).
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| Reptilia | |
Ophidia indet.2, Alethinophidia indet.2, Colubroidea indet.2, Afrotortrix draaensis n. gen. n. sp.2, Amphisbaenia indet.2, Scincomorpha "indet. A"2, Scincomorpha "indet. B"2, Scincomorpha "indet. C"2, ? Varanoidea indet.2
Ophidia indet.2 snake Five fragmentary trunk vertebrae (UM/HGL50-580) and four caudal vertebrae (UM/HGL50-581)
Afrotortrix draaensis n. gen. n. sp.2 Rage et al. 2021 snake Holotype. One mid-trunk vertebra (UM/HGL50-568).; Twenty trunk vertebrae (HGL50-569 to 573) and perhaps four poorly preserved trunk vertebrae (HGL50- 574).
Amphisbaenia indet.2 worm lizard One incomplete premaxilla (UM/HGL50-557) and five trunk vertebrae (UM/HGL50-558 and 559)
Scincomorpha "indet. A"2 Camp 1923 squamates One fragment of dentary bearing four teeth (UM/ HGL50-550) and perhaps a fragment of maxilla bearing three teeth (UM/HGL50-551).
Scincomorpha "indet. B"2 Camp 1923 squamates One fragment of bone bearing teeth (UM/HGL50- 552) and perhaps three other fragments bearing teeth (UM/ HGL50-553).
Scincomorpha "indet. C"2 Camp 1923 squamates One fragment of bone bearing two teeth (UM/ HGL50-554), three fragments of maxillae bearing teeth (UM/ HGL50-555), and two larger fragments bearing one tooth each (UM/HGL50-556)
? Varanoidea indet.2 Gray 1827 squamates One incomplete dorsal (UM/HGL50-560), one incomplete caudal (UM/HGL50-561) and perhaps another caudal vertebrae (UM/HGL50-562)
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Gekkonidae indet.2 Gray 1825 gecko Seven incomplete dentaries (UM/HGL50-547, 548) and four fragments bearing teeth (UM/HGL50-549)
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| Mammalia | |
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Mammalia indet. Linnaeus 1758 mammal
Helioseus insolitus Sudre 1979 mammal | |
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Drakonycteris glibzegdouensis n. gen. n. sp.3
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Pseudovespertiliavus parva n. gen. n. sp.3
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Hyracoidea indet. Huxley 1869 hyrax | |
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Microhyrax lavocati Sudre 1979 hyrax
? Thyrohyrax sp. Meyer 1973 hyrax | |
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? Proboscidea indet. proboscidean | |
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Creodonta indet. Cope 1875 creodont | |
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Furodon crocheti n. gen. n. sp.5 Solé et al. 2014 creodont HGL 50bis-56 - holotype; referred material: HGL 50-404, 405, 407 and 410
Glibzegdouia tabelbalaensis Crochet et al. 2001 creodont GZC 35 - holotype; referred specimens: HGL 50-406, 408 and 411
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Booidea "indet. B"2 even-toed ungulate One anterior trunk vertebra (UM/HGL50-576) and perhaps two caudal vertebrae (UM/HGL50-577).
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"Lipotyphla indet." = Eulipotyphla placental
Rodentia indet. Bowdich 1821 rodent | |
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Glibia sp. Vianey-Liaud et al. 1994 rodent
Lazibemys zegdouensis n. gen. n. sp.1 Marivaux et al. 2011 rodent HGL50-70 - holotype; paratypes: HGL50-71 and 72
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Algeripithecus minutus, "Azibius trerki" = Azibius trerki, "Tabelia hammadae" = Azibius trerki, "Dralestes hammadaensis" = Azibius trerki
Algeripithecus minutus Godinot and Mahboubi 1992 primate
"Azibius trerki" = Azibius trerki Sudre 1975 primate
"Tabelia hammadae" = Azibius trerki Sudre 1975 primate
"Dralestes hammadaensis" = Azibius trerki Sudre 1975 primate | |
| Osteichthyes | |
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Protopteridae indet. Australian lungfish | |
| Actinopteri | |
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Perciformes indet. Bleeker 1859 perch-like fish
Characiformes indet. Regan 1911
Siluriformes indet. catfish | |
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? Clariidae indet. Bonaparte 1846 airbreathing catfish | |
| Cladistia | |
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Polypteridae indet. bichir | |
| unclassified | |
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Charophyta indet. Migula 1890 | |