First record of a diacodexeid artiodactyl in the middle Eocene Pondaung Formation (Myanmar)

PalZ ◽  
2016 ◽  
Vol 90 (3) ◽  
pp. 611-618 ◽  
Author(s):  
Stéphane Ducrocq ◽  
Aung Naing Soe ◽  
Chit Sein ◽  
Vincent Lazzari ◽  
Yaowalak Chaimanee ◽  
...  
Keyword(s):  
Middle Eocene ◽  
First Record

The First Record of the Rust Fungus (Pucciniales) Spores from Middle Eocene Sakhalinian Amber

2021 ◽  
Vol 55 (1) ◽  
pp. 105-110
Author(s):  
Yu. Ya. Tykhonenko ◽  
V. P. Hayova ◽  
M. N. Sukhomlyn ◽  
M. S. Ignatov ◽  
D. V. Vasilenko ◽  
...  
Keyword(s):  
Middle Eocene ◽  
Rust Fungus ◽  
First Record

New late Cretaceous (Campanian and Maastrichtian) marine gastropods from California

2003 ◽  
Vol 77 (1) ◽  
pp. 50-63 ◽  
Author(s):  
Richard L. Squires ◽  
Louella R. Saul
Keyword(s):  
New Species ◽  
Upper Cretaceous ◽  
New Genus ◽  
Middle Eocene ◽  
First Record ◽  
Northeastern Brazil ◽  
Marine Gastropods ◽  
The Pacific ◽  
Lower Maastrichtian ◽  
Upper Campanian

Three new genera and six new species of shallow-marine gastropods are named from Upper Cretaceous strata found mainly in California. The trochidsCidarina cretaceanew species andCidarina betanew species, the ficidBulbificopsis garzanew genus and new species, and the cancellariidMataxa aridanew species are from the Maastrichtian part of the Moreno Formation of north-central California. This is the earliest record ofCidarina, whose previous chronologic range was middle Eocene to Recent.Bulbificopsisis the first record of a Cretaceous ficid from the Pacific slope of North America, andMataxawas previously known only from Upper Cretaceous strata in the southeastern United States and northeastern Brazil. The buccinidEripachya jalamanew species and the fasciolariidCalkota daileyinew genus and new species are from the lower upper Campanian Jalama Formation in southern California.Calkotais also recognized herein as occurring in upper Maastrichtian strata of North Dakota and South Dakota. The new melongenid genus,Pentzia, established forFulgur hilgardiWhite, 1889, is from Campanian strata throughout California; middle Campanian strata on Sucia Island, Washington; and upper Campanian to lower Maastrichtian strata in northern Baja California, Mexico.

Chaoborus Lichtenstein (Diptera: Chaoboridae) pupae from the middle Eocene of Mississippi

1998 ◽  
Vol 72 (3) ◽  
pp. 491-493 ◽  
Author(s):  
John E. Johnston ◽  
Art Borkent
Keyword(s):  
North America ◽  
Depositional Environment ◽  
Middle Eocene ◽  
First Record ◽  
Extant Genus ◽  
Clay Deposits ◽  
Benton County

Pupae of the nonbiting midge Chaoborus are reported from the middle Eocene (Claibornian) Tallahatta Formation in Benton County, Mississippi. These pupae are placed within the genus Chaoborus because the shape of the respiratory organs, length of the abdomen, and shape of the anal paddles closely resemble other species of this extant genus. This occurrence represents the oldest record of Chaoborus pupae and the first record of fossil Chaoborus from North America. The flora and fauna found associated with the fossil pupae along with the known habitats of extant Chaoborus pupae indicate a lentic environment. This interpretation corresponds to the depositional environment of similar Eocene-aged clay deposits in western Tennessee.

A middle Eocene basking shark (Lamniformes, Cetorhinidae) from Antarctica.

1998 ◽  
Vol 10 (1) ◽  
pp. 83-88 ◽  
Author(s):  
Alberto L. Cione ◽  
M. A. Reguero
Keyword(s):  
Middle Eocene ◽  
First Record ◽  
Proximal Fragment ◽  
South American ◽  
Antarctic Waters ◽  
La Meseta Formation ◽  
Minimum Age ◽  
Living Species ◽  
Gill Raker ◽  
Basking Shark

A proximal fragment of a gill raker identified as belonging to a shark of the genus Cetorhinus was collected from middle Eocene deposits of the La Meseta Formation in the northern part of Seymour Island, Antarctica. This is the first record of a fossil basking shark from Antarctica and one of the earliest records of the genus. The minimum age of Cetorhinidae is middle Eocene. The only living species of the family Cetorhinidae is a very large plankton feeder, Cetorhinus maximus. Basking sharks are unknown in subantarctic or Antarctic waters but occur on both South American coasts today. The evolution of filter-feeding vertebrates is discussed.

scholarly journals First record of the subfamily Sagrinae (Coleoptera: Chrysomelidae) from the Eocene of North America

Fossil Record ◽  
2021 ◽  
Vol 24 (1) ◽  
pp. 135-139
Author(s):  
Andrei A. Legalov
Keyword(s):  
North America ◽  
Type Species ◽  
New Genus ◽  
Middle Eocene ◽  
First Record ◽  
Green River Formation ◽  
Green River ◽  
The Family

Abstract. A new genus, Palaeatalasis gen. nov. (type species P. monrosi sp. nov.), from the tribe Megamerini (Chrysomelidae: Sagrinae) from the early-middle Eocene Green River Formation is described and illustrated. The new genus is similar to the Recent Atalasis Lacordaire, 1845 but differs from it in the subparallel sides of the pronotum, metafemora without teeth, and non-emarginate eyes. It differs from the Eocene Eosagra Haupt, 1950 in the large, convex, non-emarginate eyes, wide elytra, and transverse pronotum. The new genus is distinguished from the Paleocene Gallopsis Legalov, Kirejtshuk et Nel, 2019 in the wide forehead and convex eyes. It is the first record of the Sagrinae from North America and the fourth known species of the family Chrysomelidae from the Green River.

Cephalopods from the late Eocene Hoko River Formation, northwestern Washington

1988 ◽  
Vol 62 (01) ◽  
pp. 76-82 ◽  
Author(s):  
Richard L. Squires
Keyword(s):  
New Jersey ◽  
North American ◽  
Coastal Area ◽  
Middle Eocene ◽  
First Record ◽  
Late Eocene ◽  
Olympic Peninsula ◽  
Submarine Fan ◽  
Northeastern Pacific ◽  
Northeastern Mexico

Rare specimens of the nautiloidsNautilusandAturiaand extremely rare specimens of a sepiamorph sepiid are described from the late Eocene Hoko River Formation, northern Olympic Peninsula, Washington. The well-preserved partial phragmocones are from channel-fill clastics deposited on the inner and middle slopes of a submarine-fan system.TheNautilusspecimen is allied toN. cookanumWhitfield from middle Eocene strata, New Jersey, and is probably conspecific withNautilussp. (Miller) from late Eocene strata, northwestern Oregon, both of which were previously assigned toEutrephoceras.This is the first record ofNautilusin the northeastern Pacific.TheAturiaspecimen is tentatively identified asA.cf.A. alabamensis(Morton), a species previously only known from late Eocene strata in the Atlantic-Gulf Coastal area and northeastern Mexico.Aturia alabamensismay be the same as numerous Eocene North American aturiid species.The two sepiamorph sepiid specimens resembleBelosepiaVoltz but are probably generically distinct. They are only the second record of sepiids in the Eocene of the northeastern Pacific.

scholarly journals New middle Eocene decapods (Crustacea) from Chiapas, México

2001 ◽  
Vol 75 (5) ◽  
pp. 929-946 ◽  
Author(s):  
Francisco J. Vega ◽  
Timothy Cosma ◽  
Marco A. Coutiño ◽  
Rodney M. Feldmann ◽  
Torrey G. Nyborg ◽  
...  
Keyword(s):  
New Species ◽  
North America ◽  
New Genus ◽  
Middle Eocene ◽  
Decapod Crustacean ◽  
First Record ◽  
New Combination ◽  
Southern Europe ◽  
Southern Mexico ◽  
Close Relationship

Decapod crustacean specimens from the middle Eocene San Juan Formation in central Chiapas represent the first record of Eocene decapods in southern México. New taxa include: Dardanus mexicanus new species (Diogenidae), Lophoranina cristaspina new species, Notopus minutus new species (Raninidae); Verrucoides stenohedra new genus and new species (Xanthidae); Stoaplax nandachare new genus and new species (Goneplacidae); and Viapinnixa alvarezi new species (Pinnotheridae). Verrucoides verrucoides new genus and new combination from the Paleocene of Greenland represents a new combination. In addition, the fauna includes Callianassa sensu lato sp., Laeviranina sp., Calappilia cf. C. hondoensis Rathbun, 1930, Eriosachila sp., and indeterminate calappid and xanthoid taxa. This assemblage bears close relationship with coeval faunas in the Tethyan region of southern Europe and southern North America and with Paleocene faunas of Greenland, strengthening the evidence for previously described patterns of dispersal within the Decapoda.

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