PBDB Collection

IAA 1/90: Ypresian, Antarctica

List of taxa

Where & when

Geology

Taphonomy & methods

Metadata & references

Taxonomic list

unclassified

	Acanthopterygii indet.	Schwarzhans et al. 2017
Malacostraca - Decapoda - Lyreididae

	Lyreidus antarcticus Feldmann and Zinsmeister 1984	Feldmann and Wilson 1988
Mammalia - Dasyuromorphia

	? Dasyuromorphia indet. Gill 1872		1 specimen
Mammalia - Microbiotheria - Microbiotheriidae

	Microbiotheriidae indet. (Ameghino 1887)		1 specimen
Mammalia

	Marambiotherium glacialis n. gen., n. sp. Goin et al. 1999	Goin et al. 1999	1 specimen
	MLP 95-1-10-1; a fragment of a right mandibular ramus with a complete m4 (Figs. 9A-C) and the posterior alveolus of m3.
Mammalia - Didelphimorphia

	Didelphimorphia indet. Gill 1872		3 specimens
Mammalia - Derorhynchidae

	Derorhynchidae indet. Paula Couto 1962	Goin et al. 1999	1 specimen
	MLP 94-111-15-11, an isolated lower left molar

	Derorhynchus minutus n. sp. Goin et al. 1999	Goin et al. 1999	1 specimen
	MLP 96-1-5-44, a fragment of the right horizontal ramus of the dentary, incomplete, with m2-3

	Xenostylus peninsularis n. gen., n. sp. Goin et al. 1999	Goin et al. 1999	1 specimen
	recombined as Xenostylos peninsularis
	MLP 94-111-15-10, an isolated upper right mola

	Pauladelphys juanjoi Goin et al. 1999	Goin et al. 1999	1 specimen
	MLP 96-I5-45, upper left molar (M?1)
Mammalia - Prepidolopidae

	Perrodelphys coquinense n. gen., n. sp. Goin et al. 1999	Goin et al. 1999	1 specimen
	MLP 96-1-5-11, an isolated left lower molar (m?l; Figs. 8A-C).
Mammalia

	Pujatodon ektopos n. gen., n. sp. Goin et al. 2020	Goin et al. 2020	1 specimen
Mammalia - Polydolopidae

	? Polydolopidae indet. Ameghino 1897		1 specimen

	Polydolops dailyi		3 specimens

	Polydolops seymoureinsis		1 specimen

	Polydolops sp. Ameghino 1897		1 specimen
	sp. nov.

	Antarctodolops mesetaense n. sp. Chornogubsky et al. 2009	Chornogubsky et al. 2009	8 specimens
	Holotype. MLP 96-I-5-12, a right dentary with p3-m3 (Fig. 5e). Hypodigm. MLP 92- II-2-1, an isolated left m2; MLP 94-III-15-13a, an isolated left m1; MLP 94-III-15-13b, an isolated left m3; MLP 96- I-5-46, an isolated right m3; MLP 95-I-10-4, an isolated left M1 (Fig. 5f). Tentatively referred specimen. MLP 90-I-20-4, an isolated P3.
Mammalia - Astrapotheria

	Ungulata indet. Linnaeus 1766		1 specimen
	= cf. Antarctodon sobrali Bond et al. 2011	Bond et al. 2011
	MLP 90-I-20-2, "anterolingual portion of a right upper cheek tooth". According to Bond et al. (2011), it "could represent an upper cheek tooth of Antarctodon."
Mammalia - Panameriungulata - Sparnotheriodontidae

	Notolophus arquinotiensis Bond et al. 2006	Bond et al. 2006	6 specimens
	MLP 90-I-20-1, left upper molariform (M1 or M2?), MLP 01-I-1-1, right m3, MLP 90-I-20-3, right I3?, MLP 90-I-20-5, left upper premolar incomplete (P2 or P3?), MLP 91-II-4-5, right upper premolar (P1), MLP 94-III-15-3, left lower incisive
Mammalia

	Marsupialia indet. Illiger 1811		1 specimen
	= ? Marsupialia indet. Illiger 1811	Goin et al. 1999
	MLP 92-II-2-2, a fragment of left mandibular ramus with the alveolus and root of the last molar and part of its anterior alveolus (Figs. 10A and B).
Mammalia - Sudamericidae

	cf. Sudamerica ameghinoi Scillato-Yane and Pascual 1984	Goin et al. 2006	2 specimens
	MLP 95-I-10-5 (Figs 2 A–C & 3A, B), anterior part of a left dentary with the rodent-like incisor partially preserved. Tentatively referred: MLP 96-I-5-47, an isolated ?left upper incisor (Fig. 3A, B) broken at its proximal end.
Reptilia - Testudines

	Testudines indet. Batsch 1788	Bona et al. 2010	2 specimens
Reptilia - Testudines - Dermochelyidae

	cf. Psephophorus sp. von Meyer 1847	de la Fuente et al. 1995
	an isolated epithecal plate; MLP 90-1-20-270/273, two isolated plates (IAA 1/90, TELM 5); MLP 95-1-10-11/12/13, fragments of epithecal plates (IAA 1/90, TELM 5)
Reptilia - Charadriiformes

	Charadriiformes indet. Huxley 1867		1 specimen
Reptilia

	Archaeospheniscus wimani (Marples 1953)		1 specimen

	Anthropornis grandis (Wiman 1905)	Myrcha et al. 2002	1 specimen
Reptilia - Spheniscidae

	Spheniscidae indet. Bonaparte 1831		1 specimen
Reptilia - Procellariidae

	Procellariidae indet. Vigors 1825		2 specimens
Reptilia - Odontopterygiformes - Pelagornithidae

	Pelagornithidae indet. Fürbringer 1888	Acosta Hospitaleche and Reguero 2020
Actinopteri - Gadiformes - Macruronidae

	Macruronus eastmani n. sp. Schwarzhans et al. 2017	Schwarzhans et al. 2017	3 specimens
Actinopteri - Gadiformes - Macrouridae

	Coelorinchus nordenskjoeldi n. sp. Schwarzhans et al. 2017	Schwarzhans et al. 2017	9 specimens

	Coelorinchus balushkini n. sp. Schwarzhans et al. 2017	Schwarzhans et al. 2017	3 specimens
Actinopteri - Spariformes - Sparidae

	? Sparidae indet. (Cuvier 1817)	Schwarzhans et al. 2017
Actinopteri - Haemulidae

	? Haemulidae indet. Gill 1885	Schwarzhans et al. 2017
Actinopteri - Perciformes

	Percoidei indet. (Bleeker 1859)	Schwarzhans et al. 2017
Actinopteri - Ophidiiformes - Ophidiidae

	Hoplobrotula antipoda n. sp. Schwarzhans et al. 2017	Schwarzhans et al. 2017	2 specimens
Actinopteri - Beryciformes - Berycidae

	Centroberyx sp. Gill 1862	Schwarzhans et al. 2017	1 specimen
Chondrichthyes - Squalomorphii - Pristiophoridae

	Pristiophorus laevis Engelbrecht et al. 2017	Engelbrecht et al. 2017
Chondrichthyes - Lamniformes - Cetorhinidae

	Cetorhinus sp. de Blainville 1816	Cione and Reguero 1998	1 specimen
Chondrichthyes - Carcharhiniformes - Scyliorhinidae

	Abdounia mesetae n. sp. Engelbrecht et al. 2017	Engelbrecht et al. 2017

	Abdounia richteri n. sp. Engelbrecht et al. 2017	Engelbrecht et al. 2017
Chondrichthyes - Carcharhiniformes - Triakidae

	Galeorhinus sp. de Blainville and Prévost 1816	Engelbrecht et al. 2017

	Kallodentis rhytistemma n. gen., n. sp. Engelbrecht et al. 2017	Engelbrecht et al. 2017

	Meridiogaleus cristatus n. gen., n. sp. Engelbrecht et al. 2017	Engelbrecht et al. 2017

	Mustelus sp.	Engelbrecht et al. 2017
see common names

Geography

Country:	Antarctica
Coordinates:	64.2° South, 56.7° West (view map)
Paleocoordinates:	63.4° South, 63.8° West
Basis of coordinate:	stated in text
Geographic resolution:	outcrop

Time

Period:	Paleogene	Epoch:	Eocene
Stage:	Ypresian	10 m.y. bin:	Cenozoic 2
Key time interval:	Ypresian
Age range of interval:	56.00000 - 47.80000 m.y. ago
Age estimate:	47.35 to 44.54 Ma (Sr isotope)

Stratigraphy

Formation:	La Meseta	Member:	Telm 5
Stratigraphic resolution:	member
Stratigraphy comments: Cucullaea I allomember of the La Meseta Formation (this is the alternative division system of the La Meseta Fm. to the TELM system); Bona et al 2010 identify the age as Middle Eoecene

Lithology and environment

Primary lithology:	not reported
Environment:	estuary/bay

Taphonomy

Modes of preservation:	body
Size of fossils:	macrofossils

Collection methods and comments

Reason for describing collection:

general faunal/floral analysis

Metadata

Database number:	100414
Authorizer:	M. Uhen, J. Zijlstra, E. Vlachos	Enterer:	M. Uhen, E. Vlachos, J. Zijlstra
Modifier:	M. Uhen	Research group:	vertebrate
Created:	2010-12-09 02:59:27	Last modified:	2018-03-08 14:11:07
Access level:	the public	Released:	2010-12-09 02:59:27
Creative Commons license:	CC BY

Reference information

Primary reference:

34464.

M. S. Bargo and M. A. Reguero. 1998. Annotated catalogue of the fossil vertebrates from Antarctica housed in the Museo de la Plata, Argentina. I. Birds and Land Mammals from La Meseta Formation (Eocene - Early Oligocene). Associacion Paleontologica Argentina, Publicacion Especial 5:211-221 [M. Uhen/M. Uhen]

Secondary references:

43660		C. Acosta Hospitaleche and N. Haidr. 2011. Penguin cranial remains from the Eocene La Meseta Formation, Isla Marambio (Seymour Island), Antarctic Peninsula. Antarctic Science 23(4):369-378 [M. Uhen/M. Uhen]
72291		C. Acosta Hospitaleche and M. Reguero. 2020. Additional Pelagornithidae remains from Seymour Island, Antarctica. Journal of South American Earth Sciences 99 [M. Uhen/M. Uhen]
47923		P. Bona, M. S. De la Fuente, and M. A. Reguero. 2010. Short note new fossil turtle remains from the Eocene of the Antarctic Peninsula. Antarctic Science 22(5):531-532 [M. Uhen/M. Uhen]
57793		M. Bond, A. Kramarz, R. D. E. MacPhee and M. Reguero. 2011. A new astrapothere (Mammalia, Meridiungulata) from La Meseta Formation, Seymour (Marambio) Island, and a reassessment of previous records of antarctic astrapotheres. American Museum Novitates 3718:1-16 [J. Zijlstra/J. Zijlstra]
57463		M. Bond, M. A. Reguero, S. F. Vizcaino and S. A. Marenssi. 2006. A new 'South American ungulate' (Mammalia: Litopterna) from the Eocene of the Antarctic Peninsula. Geological Society, London, Special Publications 258:163-176 [R. Butler/R. Butler]
57792		L. Chornogubsky, F. J. Goin, and M. Reguero. 2009. A reassessment of Antarctic polydolopid marsupials (Middle Eocene, La Meseta Formation). Antarctic Science 21(3):285-297 [J. Zijlstra/J. Zijlstra]
47939		A. L. Cione and M. A. Reguero. 1998. A middle Eocene basking shark (Lamniformes, Cetorhinidae) from Antarctica. Antarctic Science 10(1):83-88 [M. Uhen/M. Uhen]
66662		M. S. de la Fuente, S. N. Santillana, and S. A. Marensi. 1995. An Eocene leatherback turtle (Cryptodira; Dermochelyidae) from Seymour Island, Antarctica. Studia Geologica Salmanticensia 31:21-34 [E. Vlachos/E. Vlachos]
61739		A. Engelbrecht, T. Mörs, M. A. Reguero and J. Kriwet. 2017. A new sawshark, Pristiophorus laevis, from the Eocene of Antarctica with comments on Pristiophorus lanceolatus. Historical Biology 29(6):841-853 [M. Uhen/B. Shipps/M. Uhen]
64969		A. Engelbrecht, T. Mörs, M. A. Reguero and J. Kriwet. 2017. New carcharhiniform sharks (Chondrichthyes, Elasmobranchii) from the early to middle Eocene of Seymour Island, Antarctic Peninsula. Journal of Vertebrate Paleontology 37(6):e1371724 [M. Uhen/M. Uhen]
45259	decapod	R. M. Feldmann and M. T. Wilson. 1988. Eocene decapod crustaceans from Antartica. Geological Society of America, Memoir 169 465-488 [C. Schweitzer/E. Johnson]
57522		F. J. Goin, J. A. Case, M. O. Woodburne, S. F. Vizcaino, and M. A. Reguero. 1999. New Discoveries of "Opposum-like" Marsupials from Antarctica (Seymour Island, Medial Eocene). Journal of Mammalian Evolution 6(4):335-365 [R. Butler/R. Butler]
57833		F. J. Goin, M. A. Reguero, R. Pascual, W. Koenigswald, M. O. Woodburne, J. A. Case, S. A. Marenssi, E. C. Vieytes, and S. F. VizcaÃno. 2006. First gondwanatherian mammal from Antarctica. Geological Society, London, Special Publications 258:135-144 [J. Zijlstra/J. Zijlstra/O. Alfaro]
67219		F. J. Goin, E. C. Vieytes, J. N. Gelfo, L. Chornogubsky, A. N. Zimicz and M. A. Reguero. 2020. New Metatherian Mammal from the Early Eocene of Antarctica. Journal of Mammalian Evolution 27:17-36 [M. Uhen/S. Lian/P. Mannion]
19675	5% 56120	A. Myrcha, P. Jadwiszczak, C. P. Tambussi, J. I. Noriega, A. Gazdzicki, A. Tatur, and R. A. Valle. 2002. Taxonomic revision of Eocene Antarctic penguins based on tarsometatarsal morphology. Polish Polar Research 23(1):5-46 [M. Uhen/M. Uhen/M. Uhen]
62852		W. Schwarzhans, T. Mörs, A. Engelbrecht, M. Reguero, and J. Kriwet. 2017. Before the freeze: otoliths from the Eocene of Seymour Island, Antarctica, reveal dominance of gadiform fishes (Teleostei). Journal of Systematic Palaeontology 15(2):147-179 [M. Uhen/M. Uhen]