MAD93-18 (SUNY) (Cretaceous of Madagascar)

Where: Mahajanga, Madagascar (15.9° S, 46.6° E: paleocoordinates 30.1° S, 38.4° E)

• coordinate based on political unit

• small collection-level geographic resolution

When: Anembalemba Member (Maevarano Formation), Maastrichtian (72.1 - 66.0 Ma)

• three bonebeds: BB1, BB2, BB3 - which should eventually be separated into distinct collections

• group of beds-level stratigraphic resolution

Environment/lithology: "channel"; sandstone

• "shallow and very broad channel-belt system characterized by an ephemeral and flood-prone discharge regime."

Size class: macrofossils

Preservation: trace

Collected by D. Krause & crews in 1993, 1995, 1997, 1999, 2001, 2004, 2007; reposited in the FMNH

Collection methods: quarrying, mechanical,

• Faunal list from formation includes "fishes, frogs, turtles, snakes, lizards, crocodiles, sauropod and non-avian theropod dinosaurs, and mammals", but these are certainly not all from site MAD 93-18. The site is productive and does contain many other taxa, but these were collected at other times, and are not listed in this paper - other papers need to be consulted.

Primary reference: C. A. Forster, L. M. Chiappe, D. W. Krause and S. D. Sampson. 1996. The first Cretaceous bird from Madagascar. Nature 382:532-535 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 25074: authorized by Matthew Carrano, entered by Matthew Carrano on 27.08.2002, edited by Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

Pisces
  -
"Pisces indet." = Osteichthyes8
"Pisces indet." = Osteichthyes8 Huxley 1880 bony fish
Reptilia
 Testudines - Bothremydidae
Kinkonychelys rogersi4 Gaffney et al. 2009 sideneck turtle
 Saurischia -
Rapetosaurus krausei1 Curry Rogers and Forster 2001 sauropod
FMNH PR 2342, UA 9331; 2 skulls and 1 skeleton & osteoderms
Vahiny depereti2 Curry Rogers and Wilson 2014 sauropod
FMNH PR 3046 (juvenile basioccipital)
 Avetheropoda -
Avialae indet.7 Gauthier 1986 avialan
FMNH PA 741; UA 9610-9611
Avialae "indet. E"7 Gauthier 1986 avialan
UA 9606; "Humeral Taxon E"
Avialae "indet. F"7 Gauthier 1986 avialan
FMNH PA 749; "Humeral Taxon F"
 Avetheropoda - Dromaeosauridae
"Rahona ostromi n. gen. n. sp." = Rahonavis ostromi3, "? Rahonavis ostromi" = Rahonavis ostromi7
"Rahona ostromi n. gen. n. sp." = Rahonavis ostromi3 Forster et al. 1998 coelurosaur
"? Rahonavis ostromi" = Rahonavis ostromi7 Forster et al. 1998 coelurosaur
FMNH PA 746, UA 9604; "Humeral Taxon B"
Aves
 Ornithothoraces -
Ornithothoraces indet.7 Chiappe and Calvo 1994 bird
UA 9602
 Ornithurae -
Ornithurae indet.7 Haeckel 1866 bird
UA 9601
? Ornithurae indet.7 Haeckel 1866 bird
FMNH PA 748, UA 9607
 Ornithothoraces -
Vorona berivotrensis n. gen. n. sp. Forster et al. 1996 bird
UA 8651, 9609; FMNH PA 715, 717
? Vorona berivotrensis7 Forster et al. 1996 bird
FMNH PA 743-745; "Humeral Taxon A"; FMNH PA 750
 Enantiornithes -
Enantiornithes indet.7 Walker 1981 bird
FMNH PA 747; "Humeral Taxon C"; UA 9608; FMNH PA 752-753
? Enantiornithes indet.7 Walker 1981 bird
UA 9605; "Humeral Taxon D"
Reptilia
 Saurischia - Abelisauridae
"Majungatholus atopus" = Majungasaurus crenatissimus10
"Majungatholus atopus" = Majungasaurus crenatissimus10 Depéret 1896 ceratosaur
FMNH PR 2294, 2295, 2423, 2426, 2428, 2433, 2434
 Saurischia - Noasauridae
Masiakasaurus knopfleri n. gen. n. sp.9
Masiakasaurus knopfleri n. gen. n. sp.9 Sampson et al. 2001 ceratosaur
 Loricata -
Simosuchus clarki5 Buckley et al. 2000 pug-nosed crocodile
FMNH PR 2824 (nearly complete fifth? cervical vertebra) and UA 9753 (nearly complete right femur)
 Squamata - Madtsoiidae
Madtsoia madagascariensis6 Hoffstetter 1961 snake
Mammalia
  -
Mammalia indet.8 Linnaeus 1758 mammal