Where: Figuig, Morocco (32.5° N, 3.1° W: paleocoordinates 26.9° N, 0.9° E)
• coordinate stated in text
When: Lower Anoual Member (Anoual Formation), Bathonian (168.3 - 166.1 Ma)
• The Guelb el Ahmar fauna is stratigraphically located in the upper part of the Anoual Formation... subdivided into a thick continental lower member, and a shallow marine carbonaceous upper member. The lithology and sedimentary structures of the lower member suggest a flooding plain and/or deltaic depositional environment. This is consistent with the large fossil trunks that are common in that unit. The fossiliferous levels yielding the Guelb el Ahmar (GEA) vertebrate fauna belong to the upper part of the lower member of the Anoual Fm. Sites GEA 3 and GEA 1 correspond to the same level of calcareous lacustrine limestones, which underlies site GEA 2.
Environment/lithology: fluvial-deltaic; lithified, gypsiferous, brown marl
Size classes: macrofossils, mesofossils, microfossils
Preservation: coalified
Collection methods: bulk, surface (in situ), mechanical, peroxide, sieve,
Primary reference: H. Haddoumi, R. Allain, S. Meslouh, G. Metais, M. Monbaron, D. Pons, J.-C. Rage, R. Vullo, S. Zouhri and E. Gheerbrant. 2016. Guelb el Ahmar (Bathonian, Anoual Syncline, eastern Morocco): first continental flora and fauna including mammals from the Middle Jurassic of Africa. Gondwana Research 29:290-319 [P. Barrett/T. Cleary]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 176120: authorized by Paul Barrett, entered by Terri Cleary on 29.01.2016, edited by Philip Mannion
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Equisetopsida | |
Araucariacites australis Cookson 1947 | |
Inaperturopollenites sp. Potonié 1966 | |
Classopollis sp. Pflug 1953 | |
Alisporites | |
Alisporites sp. Daugherty 1941 | |
Algae | |
Botryococcus sp. Kutzing 1849 | |
Pteridopsida | |
Ischyosporites variegatus Schultz 1967
Cyathidites sp. Couper 1953 | |
Polypodiopsida | |
Leptolepidites sp. Couper 1953 | |
Cycadopites | |
Cycadopites sp. Wodehouse 1933 | |
Callialasporites sp. Sukh-Dev 1961 podocarp | |
Pinopsida | |
Pityosporites sp. Seward 1914 | |
unclassified | |
Charophyta indet. Migula 1890 | |
Schizosporis | |
Schizosporis sp. Cookson and Dettmann 1959 | |
Gastropoda | |
Valvatidae indet. Gray 1840 snail | |
Planorbidae indet. Rafinesque 1815 snail | |
Lymnaeidae indet. Rafinesque 1815 snail | |
Deuteropoda | |
Ostracoda indet. Latreille 1802 ostracod | |
Osteichthyes | |
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Coelacanthimorpha | |
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Amphibia | |
? Lissamphibia indet. tetrapod GEA 2-2, incomplete maxilla, "tentatively assigned to lissamphibians on basis of the morphology of its teeth"
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Albanerpetontidae indet. Fox and Naylor 1982 tetrapod GEA 2-22, incomplete maxilla; GEA 2-21, incomplete frontal
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Mammalia | |
Amphitheriidae indet. Owen 1846 mammal GEA 2-1, fragment of juvenile right dentary; GEA 2-32, fragment of edentulous right dentary
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Reptilia | |
Testudinata "indet. 1" Oppel 1811 turtle morphotype 1 represented by "about 50 plate fragments" from sites GEA 2 and 3
Testudinata "indet. 2" Oppel 1811 turtle morph. 2 is represented "at least by a neural plate" from sites GEA 2 and 3
Testudinata "indet. 3" Oppel 1811 turtle morph. 3 is represented "by smooth plates" from sites GEA 2 and 3
Testudinata "indet. 4" Oppel 1811 turtle morph. 4 is represented "by two small incomplete costal plates" from sites GEA 2 and 3
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Squamata indet. squamates indeterminate non-ophidian squamate; GEA 2-24, incomplete maxilla; GEA 2-25, incomplete dorsal vertebra; GEA 2-27, proximal part of femur
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Rhynchocephalia indet. Günther 1867 rhynchocephalian GEA 2-20, one fragment of dentary with two incomplete teeth; GEA 2-18, fragment of maxilla bearing two teeth bases
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cf. Choristodera indet. choristodere GEA 2-31, fragmentary dentary; GEA 2-23 and 2-37, two centra of dorsal vertebrae; GEA 2-28, centrum of one anterior caudal vert.; GEA 2-39 (tentative assignment), centrum of dorsal vert.
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Actinopteri | |
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Osteoglossiformes indet. Berg 1940 "small squamules, rectangular or polygonal in shape, with ornamentation consisting of small granules bent in the same direction"
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