EU mergers and takeovers (April 1)

BRUSSELS, April 1 (Reuters) - The following are mergers under review by the European Commission and a brief guide to the EU merger process:

APPROVALS AND WITHDRAWALS

-- AR Packaging Group to buy U.S. packaging company MeadWestvaco Corp's European tobacco and general packaging folding carton operations (approved March 31)

-- Bermuda-based insurance holding company Athene Holding Ltd, which is controlled by private investment firm Apollo, to acquire Dutch insurer Delta Lloyd's German subsidiaries (approved March 31)

-- German publishers Holtzbrinck Publishing Group and Springer Science+Business Media, which is owned by private equity investor BC Partners, to set up a joint venture (approved March 31)

-- German refiner Varo Energy Holding GmbH to acquire German oil products distributor Gekol (approved March 31)

NEW LISTINGS

-- Japanese electronics group Hitachi to acquire Italian train maker AnsaldoBreda and its rail-signalling company Ansaldo STS from Italian aerospace and defence group Finmeccanica (notified March 31/deadline May 11/simplified)

EXTENSIONS AND OTHER CHANGES

None

FIRST-STAGE REVIEWS BY DEADLINE

APRIL 8

-- Norwegian telecoms company Telenor and Swedish peer TeliaSonera to combine their Danish mobile businesses (notified Feb. 27/deadline April 8)

APRIL 9

-- U.S. flooring products maker Mohawk Industries Inc to acquire Luxembourg-based International Flooring Systems (notified March 2/deadline April 9)

APIRL 10

-- Chinese state-owned steelmaker Hebei Iron & Steel Group to acquire a controlling stake in Swiss steel product trader from DPH Duferco International Trading Holding (notified March 3/deadline April 10/simplified)

APRIL 14

-- German insurer Allianz, Canadian investment fund manager Alberta Investment Management Corp and Utilities Trust of Australia to acquire joint control of railway rolling stock producer Porterbrook (notified March 5/deadline April 14/simplified)

APRIL 15

-- Private equity firm Riverstone and British bank Barclays to jointly acquire oil producer Origo (notified March 6/deadline April 15/simplified)

APRIL 16

-- Hong Kong's Cheung Kong Infrastructure Holdings Ltd to purchase British rail rolling stock company Eversholt Rail (notified March 9/deadline April 16/simplified)

APRIL 17

-- Spanish oil company Repsol to acquire Canadian oil and gas producer Talisman Energy Inc. (notified March 10/deadline April 17/simplified)

APRIL 20

-- Finnish ship engine and power plant maker Wartsila to buy navigation systems maker L-3 Marine Systems from L-3 Holding (notified March 11/deadline April 20/simplified)

-- Telecoms group Altice to acquire Brazilian peer Grupo Oi's Portuguese assets (notified Feb. 25/deadline April 20/concessions offered April 20/Portuguese competition authority asked to review the case on March 5)